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TUNGUM - Supertech Group · 4 SPECIFICATION AND APPLICATION GUIDE 5 Marine Corrosion Resistance of...
Transcript of TUNGUM - Supertech Group · 4 SPECIFICATION AND APPLICATION GUIDE 5 Marine Corrosion Resistance of...
Tungum Alloy (Aluminium-Nickel-Silicon-
brass) combines an unusually high strength to
weight ratio, with ductility, excellent corrosion
resistance, and fi rst class fatigue properties.
Highly resistant to sea water and its atmosphere,
Tungum resists both stress and crevice corrosion
to offer outstanding serviceability, even at
intermittent duty in the highly corrosive
‘splash’ zone.
Non-magnetic and non-sparking properties make
Tungum invaluable in piping high pressure gases,
particularly oxygen where its thermal conductivity/
defusivity characteristics virtually eliminate the
potential dangers present when lesser materials
are employed.
Tungum Alloy is a cryogenic material, suitable
for chemical engineering and low temperature
processes. Its corrosion resistance often enables
its use in conveying fl uids and gasses containing
corrosive elements.
Tungum is uncommon among copper alloys,
in that heat treatments include precipitation
hardening. This enables its physical properties
to be increased or decreased as required, to suit
your circumstances.
Tungum’s high proof to ultimate stress ratio
enables system proof tests to be conducted
well above working pressure, without risk of
permanent set taking place.
When used in high pressure hydraulic or
pneumatic circuits, these features together with
inherent “clean bore” characteristics combine
in affording an easily constructed, high integrity
system. This requires a minimum of purging and
no external protective treatment.
Pages 6 & 7 illustrate just some of the many
applications where a requirement for a tube
exists, that has to be strong, capable of absorbing
vibration, be resistant to corrosion and yet still
bent into a complex shape. This has been more
than satisfi ed by the use of Tungum Alloy.
Introduction to Tungum Alloy 2
Performance Where it Really Matters 3
Marine Corrosian Resistance of Tungum Alloy 4-5
World of Tungum 6-7
Physical Properties of Tungum Alloy 8
Comparative and Elevated Temperature Performance 9
Fatigue and Low Temperature Characteristics 10
General Corrosion Resistance 11
Designing with Tungum Alloy 12-13
Tungum Alloy Tubing - Metric Range 14-15
Tungum Alloy Tubing - Imperial Range 16-17
Specifi cations and Approvals 18
Fabricating Systems in Tungum Alloy 19
Contents
Introduction to Tungum Alloy
2 SPECIFICATION AND APPLICATION GUIDE
3SPECIFICATION AND APPLICATION GUIDE
Trouble and Maintenance Free Performance Where it Really Matters
Some offshore installations currently utilizing TUNGUM alloy
corrosion-resistant tubing.
Britoil ‘Clyde’ Platform
Total ‘Dunbar’ Platform
E.E. Caledonia‘ Piper Bravo’ & ‘Saltire’ Platforms
B.P. ESV “Iolair’, ‘Sullean’ & ‘Buzzard’ Platforms
HoulderOffshore MSV ‘Uncle John’
Q.G.P.C. ‘North Field’ Platform
Texaco ‘Captain’ Platform & Floater
Shell has standardised on TUNGUM for - ‘Eider’,
‘Tern’, ‘Southern Basin Revamp’, ‘Sole Pit MSV’
‘Stadive’, ‘Golden Eye,’ ‘Sakhalin Isle’ & ‘Ursa’
in the Gulf of Mexico
In salt-laden marine atmospheres, ‘316’ stainless steel is highly susceptible to crevice corrosion and chloride pitting. After just a few years of salt spray exposure, it may still look bright from a distance, but closer inspection reveals telltale signs of imminent failure to hold pressure.
TUNGUM alloy, however, possesses a natural protection mechanism whereby, on exposure to salt spray, a very thin oxide coating is generated over the exposed surface, no more than two thousandths of an inch thick, when complete. The tube becomes discoloured, it may even have a verdigris coating, but under the oxide layer the tube material is perfect and will remain so for a very long time.
TUNGUM has been in use offshore since 1978 and industry awareness of its superiority for use in marine environments is increasingly evident as more and more operators question the use of stainless steel from both safety and economic viewpoints.
Although initially more expensive than stainless steel, the proven life expectancy of TUNGUM make the long-term operating costs far more attractive. For example, the price of instrumentation tubing for a standard rig using stainless steel compared with using TUNGUM alloy is approximately half. However, by using stainless steel you can expect 5-10 refi ts over the life of a rig and, just by taking the price of tubing into account, costs quickly escalate as demonstrated in the graph. Not to mention the costs involved in rig shut down and ‘old’
tube disposal.
Another cost benefi t is that, as a copper-based alloy,
TUNGUM is relatively easy to bend, resulting in vastly
reduced installation times compared to stainless steel -
up to 1/3 less is not uncommon. Bearing in mind that the
average installation costs for stainless steel are in the
region of £17 - £30,000, further savings will be signifi cant.
You don’t need to be a mathematician to work out the
economic advantages of TUNGUM alloy which is not only
capable of lasting the life of the platform but will also give
trouble and maintenance-free performance throughout.
4 SPECIFICATION AND APPLICATION GUIDE 5SPECIFICATION AND APPLICATION GUIDE
Marine Corrosion Resistance of Tungum Alloy
Of the environmental conditions in which engineering
products daily have to operate, none poses a greater or
wider problem than sea water and the associated saline
atmosphere, which frequently exists for many miles inland.
The life expectancy of equipment is often drastically reduced
and in areas where corrosion has already taken place,
predicting failure as a basis for preventative maintenance is
diffi cult if not impossible.
At its most aggressive, in the presence of oxygen, sea water
attacks most ‘standard’ materials is a variety if differing but
equally costly ways: -
CARBON STEEL
Prove almost impossible to protect and corrode away
almost immediately.
COMMON COPPER ALLOYS
Often suffer a shortened life, either as a result of
dezincifi cation or even stress corrosion.
STAINLESS STEELS
Are highly prone to chloride pitting a particularly damaging
form of crevice corrosion producing small holes in material
having an otherwise sound appearance.
Tungum alloy tube remains unscathed despite more than
10 years marine exposure on a semi-submersible support
vessel. The stainless steel section, from a southern North
Sea gas platform, shows both crevice corrosion and chloride
pitting after barely fi ve years in the same environment, in
lines under pipe clamps.
TUNGUM ALLOY
TUNGUM ALLOY was developed specifi cally to counter the
problems of sea water and in practice has already done so for
over 40 years.
Whether total immersed, or in the highly active ‘splash’
zone Tungum Alloy affords exceptional resistance to the
effects of marine environment. Unaffected by either stress or
crevice corrosion, Tungum Alloy is protected by a speedily
self generated oxide coating which, once formed, prevents
further attack. If this oxide coating is damaged it does of
course quickly repair itself.
An example of Tungum Tubing after 10 years at sea on
a dredger. Only the grime and oxide coating has been
removed from the tube exterior.
4 SPECIFICATION AND APPLICATION GUIDE 5SPECIFICATION AND APPLICATION GUIDE
SUBSTANCE POTENTIAL mV
Magnesium 1730
Ng-4% Al Solid Solution 1680
Galvanised Iron 1140
Cd-Zn Solder (71/29) 1120
Mg5Al8 1070
Zinc 1050
MgZn22 1040
Al-4% Zn Solid Solution 1020
Al-Zn-Cu Alloy 3L5 990
Al-1% Zn Solid Solution 960
Al-4% Mg Solid Solution 870
Cd-Plated Steel 850
MnAl6 850
Aluminium (99.95%) 850
Al-Zn-Mg-Cu-Ni Alloy RR77 840
Al-Zn-Mg-Cu-Cr Alloy 75S 840
Aluminium (90.0%) 830
Al-11.9% Si Alloy N2 830
Al- 1 1/4% Mn Alloy N3 830
Al-1% Mg Si Solid Solution 830
Al-Si-Cu-Ni-Fe Alloy DTD.133B 810
Clad H14 Alloy 810
Mild steel 353 780
Grey Cast Iron 780
Tinplate 740
Al-7% Mg Alloy 690
Al-4% Cu Solid Solution 690
Al-Cu-Mg-Mn Alloy H14 680
Iron (pure) 580
FeAl3 560
Tinman’s Solder 560
Lead 550
Cu Al2 530
Tin 500
Brass (60/40) 330
Aluminium Brass 290
Silicon 260
Cupro-Nickel (70/30) 260
TUNGUM ALLOY 230
Copper 220
Stainless Steels (316 = 195mV) 130-430
Monel 170
Nickel 140
Silver 80
Graphite
Gold
Platinum
The special corrosion resisting characteristics of Tungum
Alloy tubing, carefully developed for use in the hydraulics
systems of marine aircraft remains just as valid in todays
polluted sea waters.
The development of the oxide coating is illustrated by the
graph below. This shows time plotted against a minute
weight loss during its formation. After 1000 hours the
weight has virtually stabilised indicating that the protective
coating is already almost complete.
A fact confi rmed in the laboratory by the most rigorous
tests and backed by experience of countless practical and
demanding applications. Many of these more than 50
years standing.
GALVANIC SERIES OF ENGINEERING MATERIALS
The table opposite shows the relative position of Tungum
Alloy to other well known materials when placed in galvanic
series.
In general signifi cant galvanic corrosion does not take place
when copper is coupled to its alloys or when different copper
alloys are in contact with each other. The amount of galvanic
corrosions on a less noble metal will depend on the relative
areas of the two metals in contact and the potential or voltage
existing between them in a given environment.
For example a large mass of copper, or its alloy should not be
coupled to a small mass of reactive material such as iron, zinc
or aluminium. On the other hand the coupling of a copper, or
its alloy having a small area relative to the area of the more
reactive metal will often prove to be satisfactory.
Generally a good electrical contact in a metal to metal joint
will be greatly reduce the possibility of galvanic corrosion.
6 SPECIFICATION AND APPLICATION GUIDE 7SPECIFICATION AND APPLICATION GUIDE
The World of Tungum Alloy
1
2
3
5
6
1 Emergency Support Vessel 1010 Lair 2 Warrior Armoured Personnel Carrier
3 Mine Counter Measure Vessel - HMS ‘Ledbury’ 4 Domestic Shower 5 Millwall Cut Bridge 6 Central Line Turbostar Train
4
6 SPECIFICATION AND APPLICATION GUIDE 7SPECIFICATION AND APPLICATION GUIDE
7
8
9
10
11
7 ‘Heysham 2’ Nuclear Power Station 8 Pipeline Inspection Equipment 9 SAK 40 ‘Trinity’ Bofors Gun
10 Black Magic: PC9M Trainer Plane 11 Aircraft Carrier Scissor Lift
We would like to thank all the companies who provided pictures for this brochure
8 SPECIFICATION AND APPLICATION GUIDE 9SPECIFICATION AND APPLICATION GUIDE
Thermal Properties
Electrical Conductivity at 20°c Referred to Copper 15% ± 5%
Specifi c Resistance at 20°c Microhms per mm 1.13
Electrochemical Equivalent Kg per coulomb 32.4
Solution Potential mV Calomel scale 230
Magnetic Permeability µ 1.0015
Melting Temperature °c 1008
Stress relieving Temperature °c (for 15/20 mins.) 300
Solution Treatment Temperature °c (for 60 min) 800
Thermal Conductivity W/m°c77 at 100°c103 at 300°c
Coeffi cient of thermal expansion Per °c 19 x 10-6
Physical Properties of Tungum Alloy
Specifi c GravityWeight Kg/mm3
Lb. per cu. In.
8.60
8.52 x 10-6
0.308
Ultimate Tensile Strength Mean Value
Min Value for NES.749 PT 3
Min Value for TCL100
Min Value For DTD5019
N/mm2
Tons per sq. in.
N/mm2
Tons Per sq. in.
N/mm2
Tons Per sq. in.
N/mm2
Tons Per sq. in.
48031.07
45029.13
43027.84
41727.00
0.2% Proof Strength Mean Value
Min Value for NES.749 PT 3
Min Value for DTD5019
N/mm2
Tons Per sq. in.
N/mm2
Tons Per sq. in.
N/mm2
Tons Per sq. in.
24015.54
23014.89
21614.00
Elongation Mean Value
Min Value for NES.749 PT 3 AND DTD5019
% on 5.65 √ A
% on 5.65 √ A
45
40
Hardness Range for TCL100
Range for NES.749 PT 3
HV5
HV5
120 –140
125 - 140
Modulus of Elasticity In Tension or Compression
In Tension or Shear
N/mm2
Ib. per sq. in.
N/mm2
Ib. per sq. in.
116.5x103
16.9x106
43.8x103
6.35x106
Poisson’s Ratio 0.33
Ultimate Shear Strength N/mm2
Tons Per Sq. In.25316.4
Yeild point in Shear N/mm2
Tons Per Sq. In.1439.3
IZOD Impact Value J. 41.7
Mechanical Properties
Electrical properties
8 SPECIFICATION AND APPLICATION GUIDE 9SPECIFICATION AND APPLICATION GUIDE
Comparative & Elevated Temperature Performance
400
300
200
100
The strength to weight ratio of Tungum Alloy
compares most favourably with other materials.
In tubes, this often affords the opportunity to
employ SMALLER, LIGHTER SECTIONS – reducing
the size and cost of fi ttings and supports also
easing handling during fabrication, opening the way
for more compact space systems.
The graph shows the results of burst tests conducted
on identical samples of 1⁄2” O/D x 20SWG tubing.
Room temperature design strengths taken
from BS1306 clearly confi rm the outstanding
performance of Tungum Alloy relative to other
copper based materials.
Short-Time Elevated Temperature Properties
The graphs apply to Tungum Alloy tubing in the
annealed condition with the test piece maintained at
the temperature for a period of 60 minutes.
Copper 41 N/mm2
90 /10 CU.NI 68 N/mm2
70 / 30 CU. NI 82 N/mm2
Tungum Alloy 105 N/mm2
Introduction to Tungum Alloy
10 SPECIFICATION AND APPLICATION GUIDE 11SPECIFICATION AND APPLICATION GUIDE
As would be expected of a material originally developed
for use in the hydraulic control systems of aircraft, Tungum
Alloy has excellent fatigue resisting properties.
Today, pulsing pressures and vibration are recognised
as being a major factor infl uencing the integrity and
performance of all hydraulic systems irrespective of the
application.
In practice, tubing is often used after bending. In this
operation the outer wall of the tube becomes thinner and the
inner wall thicker. The severity of this depends on the radius
of curvature and the angle encompassed by the bend. The
tube also becomes oval due to the forming operation.
The radius of the bend, the angle of the bend, the ovality
of the tube and obviously properties of the tubing material,
all infl uence its fatigue life. The relationship between the
maximum stress, calculated for straight and circular Tungum
Alloy tubing, and the number of stress repetitions to
cause failure is shown below. The graphs are based on the
results of tests carried out in controlled conditions and are
reproduced for guidance purposes only.
Tungum Alloy satisfi es many low temperature and cryogenic
applications. The mechanical properties of the Alloy all
improve with reducing temperatures down to as low as
- 196°c. The impact resistance also remains substantially
unchanged over the same temperature range.
The table opposite compares the properties of solid, hard as
drawn Tungum alloy at 15°c and -196°c.
Temperature 15°c -196°c
.2% Proof Stress [N/mm2] 410 426
Ultimate Tensile Strength [N/mm2] 617 793
Elongation % on 5.65 √ A 20 34
Izod V-Notch value of energy absorbed in Joules 41 43
Fatigue & Low Temperature Characteristics
Specifi cations and approvals
10 SPECIFICATION AND APPLICATION GUIDE 11SPECIFICATION AND APPLICATION GUIDE
General Corrosion Resistance
Substance MaxConcentration
Max Temp °c Rating
Acetic AcidAll
0-302020
EG
Acetic Anhydride 0-100 20 E
Alum 0-100 20 G
Aluminium Sulphate 0-40 20 G
Borax All 20 E
Calcium Bi-Sulphate All 70 G
Carbon Tetrachloride Boiling E
Citric Acid All 20 G
Cotton Seed Oil All 20 E
Creostum All 20 G
Cryesylic Acid All 20 E
Formaldehyde All 20 G
Formic Acid 0-50 20 E
Hydrochloric Acid 0-10 20 G
Hydrogen Sulphide(H2S) 2500 p.p.m. - G
Hydrokinone 0-100 20 E
Lactic Acid All 20 E
Halic Acid All 20 E
Magnesium Chloride 0-10 50 E
Methylene Chloride - Boiling E
Metol S.S. 20 E
Oleic Acid All 20 E
Oxalic Acid25grms./100c.c
20 E
Phosphoric Acid 0-10 100 G
Picric Acid All 20 G
Potassium Bromide S.S. 20 E
Potassium Nitrate All 20 E
Salicylic Acid S.S 20 G
Sodium Bicarbonate - - G
Sodium Chloride S.S 20 E
Sodium Hydroxide S.S 20 E
Sodium Hypochloride S.S 70 G
Sodium Hypochlorite 1% Av.Cl. 50 E
Sodium Metabisulphate S.S 20 E
Sodium Sulphate S.S 20 E
Sodium Sulphite 0-10 50 E
Stearic Acid All 20 E
Sulpher Dioxide - - G
Tannic Acid All 20 E
Tartaric Acid All 20 E
Trichlorethylene - Boiling E
Vinegar All 20 G
Zinc Chloride - 20 E
Zinc Sulphate S.S 20 E
Tungum Alloy has a high level of general corrosion
resistance, allowing it to be specifi ed for use in systems
containing, or operating in the presence of, a variety of
substances / solutions.
The ratings below are the result of laboratory tests
conducted under the controlled conditions noted.
They are published for guidance only.
Where any doubt exists, samples of Tungum are freely
available for fi eld trials to replicate the precise operating
conditions.
Rating: EExcellent resistance – minimal attacks take place.
Rating: GGood resistance under the conditions of test.
Note: Tungum Alloy should not be used in the
presence of Acetylene, Ammonia or Mercury.
Realising the full potential of a high strength corrosion
resisting material such as Tungum Alloy, requires careful
consideration from fi rst principles.
All too often, time is at a premium and temptation exists to
cost competing materials on the basis of identical sections
(ignoring opportunities afforded by the higher strength of the
superior material). Whilst the temptation is a real one, the
resultant system will often be more costly than is necessary
or, indeed on occasions, the costing may indicate that the
budget will simply not allow a maintenance free material to
be fi tted.
The former is undesirable, the latter is often regretted for life
Even when time is at a premium, the best system will always
result from following the procedures outlined below:
Establish the operating parameters:
• Working pressure
• Flow rate required
• Operating environment
• Reliability required
• Maintenance diffi culty rating
• Other special consideration (such as the
consequences of failure in a vital system)
Select the required tube section.
Taking into account that high strength materials ( such as
Tungum Alloy ) afford an opportunity of using thinner walled
tubes. Frequently, even smaller tubes have the same capacity
as larger ones in lesser material. The benefi ts to be gained
are often substantial in contributing to:
• The cost effective use of tubing
• Ease of manipulation / fabrication
• Simplifi ed handling during construction
• Reduced cost as a result of using smaller tube
fi ttings and clamps
• Smaller, more compact systems, through the use of
smaller sections
Remember the corrosion resistance, cold working and clean
bore characteristics of Tungum Alloy combine to give the
advantage of:
• Eliminating the need to protect the tubing from the
elements prior to and during fabrication.
• Reducing the time and, most importantly, the cost
involved in purging a system of contamination
• Minimising the risk of damage to expensive circuit
control equipment
• Virtually eliminating maintenance costs
Theoretical Burst Pressure
In the tables ( pages 14-17 inclusive ), the values for
minimum theoretical burst pressure have been calculated
in accordance with the formula quoted in BS.1306; using a
minimum ultimate strength of 430 N/mm2 (27.84 Tons/sq. in).
The fi gures shown are for tubes in the straight, “as supplied”
condition.
When selecting a tube for a particular application, allowances
must be made for the effects of any bending which take place
during fabrication.
Designing with Tungum Alloy
12 SPECIFICATION AND APPLICATION GUIDE 13SPECIFICATION AND APPLICATION GUIDE
Engineering installations demand that a safety factor be
applied when establishing the sections of material to be
used. The maximum working pressure will be the minimum
theoretical burst pressure of the particular section divided by
the desired factor of safety.
BS.1306 recommends a factor of safety of 4:1 for copper
alloy tubes used in pressure vessels.
If when installing Tungum tube it has to be heated to a
temperature in excess of 700°c, its original properties may be
restored by a precipitation hardening treatment carried out at
500°c for 1 hour and air cooled.
Conditions Of Tube As Supplied
Tungum Alloy tubes are solid drawn (seamless), and are
supplied in the “W.P” (precipitation hardened) condition
within the tensile range required to meet the appropriate
specifi cation. Hard, as drawn, tube may be supplied on
request, within the tensile range of 550-664 N/mm2 (35-43
Tons/sq. in.) with an average V.P.N. hardness of 215.
Length of Tungum Tube
Tubes supplied to DTD specifi cations are in random lengths
of 4.57 / 5.18 metres (15 / 17 feet ). Tube to specifi cation
TCL100 is supplied in random lengths of 3.95 metres ( 13 feet
) and over, average length 5.50 / 6.10 metres ( 18 / 20 feet).
Subject to prior agreement, longer lengths of tubing can
be supplied.
Tolerances
Dimensional tolerances for Tungum tubing are stated in the
appropriate specifi cation – DTD.5019; DTD253A; AFS.4000;
NES.749 Part 3 or BS EN 12449 - Formally BS 2871.
Tubes Supplied to specifi cation TCL100 conform to the
tolerances laid down in BS EN12449 CW 700R, Cond, R430.
The tables shown on pages 14, 15, 16 and 17, feature the
theoretical weight per unit length for a tube of nominal
dimensions. Due to manufacturing tolerances, the actual
weight of any given tube can vary from this datum. In such
cases, the actual weight consigned and invoiced will differ
slightly from that calculated theoretically.
Availability
As a policy, large stocks of Tungum tubing are maintained
in both metric and imperial sizes. Whilst this enables most
popular sizes to be available Ex. Stock, certain of the lesser
used sections must be considered as being subject to a
special order.
If the range does not include your particular size
requirement, please call to discuss.
Conversion table for standard wire gauges, decimals
and metric.
Maximum working pressure
Imperial S.W.G. Inch Decimal Millimetre
.0196 .500
24 .0220 .559
22 .0280 .711
0.315 .800
20 .0360 .914
.0394 1.000
18 .0480 1.220
.0591 1.500
16 .0643 1.625
.0787 2.000
14 .0800 2.032
.0984 2.500
12 .1040 2.641
.1181 3.000
10 .1280 3.251
.1378 3.500
.1575 4.000
8 .1600 4.064
.1772 4.500
6 .1920 4.877
.1969 5.000
.2165 5.500
.2362 6.000
12 SPECIFICATION AND APPLICATION GUIDE 13SPECIFICATION AND APPLICATION GUIDE
OUTSIDE
DIAMETER
(mm)
WALL
SECTION
(mm)
MINIMUMTHEORETICAL
BURST PRESSURE
(Bar)
BORE
DIAMETER
(mm)
CROSS
SECTIONAL
BORE AREA
(sq. mm)
WEIGHT
Kg/M Kg/ft
3.00.80 2715 1.40 1.5 .047 .014
0.50 1515 2.00 3.1 .033 .010
3.50.80 2225 1.90 2.8 .058 .018
0.50 1265 2.50 4.9 .040 .012
4.0
1.00 2500 2.00 3.1 .080 .024
0.80 1890 2.40 4.5 .069 .021
0.50 1090 3.00 7.1 .047 .014
6.0
1.25 1985 3.50 9.6 .159 .048
1.00 1515 4.00 12.6 .134 .041
0.80 1170 4.40 15.2 .111 .034
8.0
2.00 2500 4.00 12.6 .321 .098
1.50 1745 5.00 19.6 .261 .080
1.25 1405 5.50 23.8 .226 .069
1.00 1090 6.00 28.3 .187 .057
0.80 850 6.40 32.2 .154 .047
10.0
2.00 1890 6.00 28.3 .428 .131
1.50 1340 7.00 38.5 .341 .104
1.00 850 8.00 50.3 .241 .073
12.0
2.50 1985 7.00 38.5 .636 .194
2.00 1515 8.00 50.3 .535 .163
1.60 1170 8.80 60.8 .445 .136
1.20 850 9.60 72.4 .347 .106
1.00 695 10.00 78.5 .294 .090
15.0 1.60 910 11.80 109.4 .574 .175
16.0
4.00 2495 8.00 50.3 1.280 .390
3.50 2105 9.00 63.6 1.162 .354
3.00 1745 10.00 78.5 1.044 .318
2.50 1405 11.00 95.0 .903 .275
2.00 1090 12.00 113.1 .749 .228
1.60 850 12.80 128.7 .617 .188
1.00 510 14.00 153.9 .401 .122
20.0
4.00 1885 12.00 113.1 1.772 .540
3.50 1605 13.00 132.7 1.546 .417
3.00 1340 14.00 153.9 1.365 .416
2.50 1090 15.00 176.7 1.171 .357
2.00 850 16.00 201.1 .964 .294
1.50 620 17.00 227.0 .743 .226
1.00 405 18.00 254.5 .509 .155
22.001.6 600 18.80 277.6 .874 .266
1.00 365 20.00 314.2 .562 .171
Tungum Alloy Tubing Metric Range
14 SPECIFICATION AND APPLICATION GUIDE 15SPECIFICATION AND APPLICATION GUIDE
NOTE: The fi gures shown in these tables are approximate, and are intended for estimating purposes only.
OUTSIDE
DIAMETER
(mm)
WALL
SECTION
(mm)
MINIMUMTHEORETICAL
BURST PRESSURE
(Bar)
BORE
DIAMETER
(mm)
CROSS
SECTIONAL
BORE AREA
(sq. mm)
WEIGHT
Kg/M Kg/ft
25.0
5.00 1885 15.00 176.7 2.677 .815
4.00 1445 17.00 227.0 2.248 .685
3.50 1240 18.00 254.5 2.014 .614
3.00 1040 19.00 283.5 1.747 .538
2.50 850 20.00 314.2 1.506 .459
2.00 665 21.00 346.4 1.231 .375
1.50 490 22.00 380.1 .944 .288
1.00 320 23.00 415.5 .642 .196
30.0
6.00 1885 18.00 254.5 3.850 1.174
5.00 1515 20.00 314.2 3.346 1.020
4.00 1170 22.00 380.1 2.784 .848
3.50 1005 23.00 415.5 2.483 .757
3.00 850 24.00 452.4 2.168 .661
2.50 695 25.00 490.9 1.840 .561
2.00 545 26.00 530.9 1.499 .457
1.50 405 27.00 572.6 1.144 .349
1.00 265 28.00 615.8 .776 .237
38.0
6.00 1420 26.00 530.9 5.139 1.566
5.00 1155 28.00 615.8 4.416 1.346
4.00 900 30.00 706.9 3.640 1.110
3.50 775 31.00 754.8 3.233 .985
3.00 655 32.00 804.2 2.810 .857
2.50 540 33.00 855.3 2.376 .724
2.00 425 34.00 908.0 1.928 .587
1.50 315 35.00 962.1 1.465 .447
50.0
7.00 1240 36.00 1018.0 8.050 2.454
6.00 1040 38.00 1134.2 7.076 2.152
5.00 850 40.00 1256.6 6.022 1.836
4.00 665 42.00 1385.4 4.925 1.501
3.50 575 43.00 1452.2 4.356 1.328
3.00 490 44.00 1520.5 3.774 1.150
2.50 405 45.00 1590.6 3.179 .968
2.00 320 46.00 1662.1 2.570 .782
57.0
7.00 1065 43.00 1452.3 9.370 2.853
6.00 900 45.00 1590.4 8.191 2.496
5.00 735 47.00 1734.9 6.959 2.121
3.50 500 50.00 1963.5 5.012 1.528
2.00 280 53.00 2206.4 2.945 .897
76.15.50 595 65.10 3328.5 10.393 3.168
2.00 205 72.14 4086.9 3.967 1.209
14 SPECIFICATION AND APPLICATION GUIDE 15SPECIFICATION AND APPLICATION GUIDE
Tungum Alloy Tubing Imperial Range
OUTSIDE
DIAMETER (in)
WALL
SECTION
(S.W.G.)
MINIMUM THEORETICAL
BURSTPRESSURE
(P.S.I.)
BORE
DIAMETER (in)
CROSS
SECTIONAL
BORE AREA
( sq. in. )
WEIGHT
Kg/M Kg/ft
1/8”
18 66830 .029 .001 .064 .019
20 44210 .053 .002 .055 .017
22 31910 .069 .004 .047 .014
24 23800 .081 .005 .039 .012
3/16”
18 37875 .092 .007 .116 .035
20 26395 .115 .010 .094 .029
22 19620 .132 .014 .077 .024
24 14930 .143 .016 .063 .019
1/4”
16 37825 .121 .012 .206 .063
18 26425 .154 .019 .167 .051
20 18810 .178 .025 .133 .041
22 14165 .194 .030 .107 .033
24 10875 .206 .033 .092 .028
5/16”
16 28550 .184 .027 .276 .084
18 20295 .217 .037 .219 .067
20 14615 .240 .045 .172 .052
22 11085 .257 .052 .138 .042
24 8555 .268 .057 .110 .034
3/8”
12 42035 .167 .022 .487 .148
14 30040 .215 .036 .408 .124
16 22930 .246 .048 .345 .105
18 16470 .279 .061 .271 .083
20 11945 .303 .072 .211 .064
22 9105 .319 .080 .168 .051
24 7050 .331 .086 .136 .041
1/2”
12 29105 .292 .067 .711 .217
14 21265 .340 .091 .580 .177
16 16450 .371 .108 .484 .147
18 11965 .404 .128 .375 .114
20 8755 .428 .144 .288 .088
22 6705 .444 .155 .228 .070
24 5215 .456 .163 .182 .055
5/8”
12 22260 .417 .137 .936 .285
14 16460 .465 .170 .753 .229
16 12825 .496 .194 .623 .190
18 9390 .529 .220 .478 .146
20 6905 .553 .240 .366 .112
22 5305 .569 .254 .289 .088
24 4135 .581 .265 .229 .070
16 SPECIFICATION AND APPLICATION GUIDE 17SPECIFICATION AND APPLICATION GUIDE
NOTE: The fi gures shown in these tables are approximate, and are intended for estimating purposes only.
OUTSIDE
DIAMETER (in)
WALL
SECTION
(S.W.G.)
MINIMUM THEORETICAL
BURSTPRESSURE
(P.S.I.)
BORE
DIAMETER (in)
CROSS
SECTIONAL
BORE AREA
( sq. in. )
WEIGHT
Kg/M Kg/ft
3/4”
10 22940 .494 .192 1.375 .41912 18020 .542 .231 1.160 .35414 13425 .590 .273 .926 .28216 10510 .621 .303 .761 .23218 7730 .654 .336 .582 .17720 5705 .678 .361 .444 .13522 4395 .694 .378 .349 .10624 3425 .706 .391 .277 .084
1”
8 21265 .680 .363 2.321 .70710 16455 .744 .435 1.927 .58712 13050 .792 .493 1.609 .49014 9805 .840 .554 1.271 .38716 7720 .871 .596 1.039 .31718 5710 .904 .642 .789 .24120 4230 .928 .676 .599 .18322 3265 .944 .700 .470 .14324 2555 .956 .718 .372 .113
1.1/4”
8 16460 .930 .679 3.012 .91810 12830 .994 .776 2.480 .75612 10230 1.042 .853 2.058 .62714 7725 1.090 .933 1.616 .49316 6105 1.121 .988 1.317 .40118 4525 1.154 1.046 .996 .30420 3360 1.178 1.090 .755 .23022 2600 1.194 1.120 .591 .180
1.1/2”
6 16460 1.116 .978 4.337 1.3228 13425 1.180 1.094 3.702 1.12810 10515 1.244 1.215 3.033 .92412 8410 1.292 1.311 2.507 .76414 6370 1.340 1.410 1.962 .59816 5045 1.371 1.477 1.594 .48618 3750 1.404 1.548 1.204 .367
1.3/4”6 13850 1.366 1.466 5.166 1.57418 3200 1.654 2.149 1.411 .430
2”
6 11955 1.616 2.051 5.995 1.8278 9805 1.680 2.217 5.084 1.55010 7725 1.744 2.389 4.138 1.26112 6205 1.792 2.522 3.405 1.03814 4720 1.840 2.659 2.652 .80816 3745 1.871 2.751 2.149 .655
2.1/2”6 9385 2.116 3.517 7.652 2.33216 2980 2.371 4.417 2.705 .824
3”6 7735 2.616 5.375 9.310 2.83814 3110 2.840 6.335 4.034 1.230
16 SPECIFICATION AND APPLICATION GUIDE 17SPECIFICATION AND APPLICATION GUIDE
Specifi cations and approvals
18 SPECIFICATION AND APPLICATION GUIDE
• BS EN 12449 CW 700R, Cond. R430 (Formally BS 2871) Identifi ed as alloy CZ.127
• British Standard 1306
• American Standard A.S.T.M B706-TF Identifi ed as copper alloy UNS C.69100
• French National Standard UZ.15.NS
• Ministry Of Defence Specifi cations:
Aviation : DTD5019 (for H.P Systems) Navy : NES.749 Part 3
: DTD253 A (for L.P Systems) Army : AFS.4000
Tungum Ltd is totally dedicated to the concept of quality.
The Quality Management System is approved to:
• BS EN ISO 9001-2000
• Civil Aviation Authority Standard – As a material supplier
Tungum Alloy tubing and fi ttings have the approval of:
• Lloyds Register of Shipping
• Det Norske Veritas
Chemical Composition
Copper 81.00 86.00
Aluminium 0.70 1.20
Nickel 0.80 1.40
Silicon 0.80 1.30
Iron 0.25
Lead 0.05
Tin 0.10
Manganese 0.10
Total Other Impurities 0.50
Zinc The Remainder
ELEMENTPER CENT
MIN MAX
• House specifi cation TCL100 “Tungum tubing for general use”.
The specifi cation is available in 3 ratings:
TCL100/A : Eddy current tested in accordance with the
requirements of BS. 3889 and ASTM E.243-85. – standard
specifi cation
TCL100/B : tested to 310 bar (4500 PSI)
TCL100/C : tested to 465 bar (6750 PSI)
Note:1 These are pre-delivery test pressure levels. They do not
determine the working pressure capability of any given tube size.
2 Pre-delivery hydraulic tests to customer specifi c levels can be carried out on request.
All Tungum Alloy tubes have basically the same chemical composition, but are manufactured to a variety of
Specifi cations according to the demands of the end user. The following Standards refer to Tungum Alloy tubing:
NOTE: Some standards only apply to certain tube size or special mill orders. Please check with us before ordering.
Fabricating Systems In Tungum Alloy
Tungum Ltd. has been in the pipework business for over 60 years. In the years of the Second World War, the Company
supplied Tungum Alloy tubing and tube manipulations for installation in such famous aircraft as the Spitfi re, Hurricane,
Lancaster and Halifax.
Since that time, the Company has been continually involved in supplying pipework from all materials for safety critical
applications in amongst others, the aviation, transport and medical industries. This unrivalled depth of knowledge and
experience is now directed towards saving the customer time and money by providing the complete pipework service.
The service starts with the design advice, moves on to prototype and pre-production work. This culminates in the
provision of a complete kit of fabricated assemblies, together with associated fi ttings, clamps, etc. All are fully tested and
ready for fi tting on the customers production line.
The complete pipework service
Tungum Alloy’s special combination of high strength
and ductility make it a very easy material to use on
even the most complex of systems. The ease with
which it can be cold bent and manipulated, means
that the are often signifi cant reductions in the system
installation time compared to other materials,
particularly stainless steel, copper nickel and monel.
Correctly applied, most types of high duty coupling
can be used to Tungum Alloy tubing. The exceptions
are common brass versions of couplings in which the
tightening of the nut must also deform the tube: these
fi ttings are never strong enough to work on Tungum
Alloy tubing.
Always follow the assembly instructions provided by
the coupling manufacturer.
For added confi dence of a permanent hard piped
system, why not consider our own “PG Series” Silver
Solder Fittings.
“PG Series” Silver Solder Fittings have the General
Approval of Lloyds Register for use in systems
designated to operate at high pressures. They are
designed to satisfy the demands for high strength and
corrosion resistance. The “PG series” also employs
Tungum Alloy material to provide the foundations
for consistent quality brazed joints.
Available in sizes 6mm to 50mm, the comprehensive
range is described in a product leafl et, available on
request.
Also available on request is our Design & Workshop
Guide which outlines the most common situations
likely to be encountered when using the material;
our Design Engineers are also available to advise
on specifi c matters.
19SPECIFICATION AND APPLICATION GUIDE
.DTLMUGNUT
Tel: + 44 (0) 1684 271290Fax: + 44 (0) 1684 291714E-mail: [email protected] Site: www.tungum.co.uk
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Hints on designing and installing pipework
• Select the appropriate wall section for the
pressure and service.
• Design pipe runs to allow access and easy
removal of important equipment.
• Provide adequate and correctly placed supports;
to ensure vibration is controlled to an
acceptable level.
• Select clamps which are ‘kind’ to the tube
surface, but which grip it tightly.
• Employ bends generously using the same radius
throughout. Always allow adequate room for
clamping between bends.
• Ensure each pipe fits correctly without imposing
additional loads on couplings/pipe joints.
• Protect small diameter pipe runs against being
used as ladders or hand hold.
Tungum Ltd. Warrant that their products are free
from defects in workmanship and material but unless
expressly agreed in writing Tungum give no warrant
that their products are suitable for any particular
purpose or for use under any specific circumstances
notwithstanding that such purpose would appear to
be covered by this publication.
Tungum accept no liability for any loss, damage or
expense whatsoever arising directly from the use of
their products. All business undertaken by Tungum is
subject to their standard Conditions of Sale, copies of
which are available on request.
Number One, Ashchurch Parkway,Tewkesbury,Gloucestershire. GL20 8TU, ENGLAND