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है”ह”ह

IS 3331 (2007): Copper and brass strips/foils for radiatorcores [MTD 8: Copper and Copper Alloys]

IS 3331:2007

WT’rMW’m

?RqE?a?$fa Yi+hT@mafi/ti–

Indian Standard

COPPER AND BRASS STRIPS/FOILSFOR RADIATORCORES — SPECIFICATION

(Second Revision )

Ics 77.150.01

(3 BIS 2007

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

November 2007 Price Group 4

Copper and Copper Alloys Sectional Committee, MTD 8

FOREWORD

This Indian Standard (Second Revision) was adopted by the Bureau of Indian Standards, after the draftfinalized by the Copper and Copper Alloys Sectional Committee had been approved by the MetallurgicalEngineering Division Council.

This standard was first published in 1965 and subsequently revised in 1977. While reviewing this standard in thelight of experience gained during these years, the Committee decided to revise it in line with present practicebeing followed by Indian industry. In the present revision, following modifications has been made:

a) A new clause on references has been incorporated.

b) Clause for fi-eedom ffom defects has been modified.

c) New grades have been added in Table 1 and Table 2 on chemical composition,

d) Table 3 on hardness has been modified.

e) A new clause on flatness has been added.

f) Requirement of test certificate is added.

g) Marking clause has been modified.

The composition of the Committee responsible for the formulation of this standard is given in Annex B.

For the purpose of deciding whether a particular requirement of this standard is complied with the final value,observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance withIS 2: 1960 ‘Rules for rounding off numerical values (revised’. The number of significant places retained in therounded off value should be the same as that of the specified value in this standard.

IS 3331:2007

Indian Standard

COPPER AND BRASS STRIPS/FOILSFOR RADIATORCORES — SPECIFICATION

(Second Revision )

1 SCOPE

This standard covers the requirements for copper andbrass strips/foils for fabrication of radiators for motorcars, trucks, tractors, earth moving equipments, diesellocomotives and stationary internal combustionengines.

2 REFERENCES

The following standards contain provisions, whichthrough reference in this text, constitute provisions ofthis standard. At the time of publication, the editionsindicated were valid. All standards are subject torevision and parties to agreements based on thisstandard are encouraged to investigate the possibility

of applying the most recent editions of the standardsindicated below:

[S No. Title

1387:1993 General requirements for the supplyof metallurgical materials (secondrevision)

3186:1965 Method of chemical analysis ofcadmium copper

3288:1986 Glossary of terms relating to copperand copper alloys

3685:1966 Method of chemical analysis ofbrasses

4748: 1988 Method for estimating the averagegrain size of wrought copper andcopper alloy

3 TERMINOLOGY

For the purpose of this standard following definitionsreproduced from IS 3288 shall apply.

3.1 Strip — Flat product over 0.15 mm, thick and upto and including 10 mm, thick of any width andgenerally not cut to length; usually in coils but may beflat or folded.

3.2 Foil — A flat product of thickness up to andincluding 0.15 mm, of any width generally not cut tolength usually in coil form but may also be in flat orfolded form.

4 SUPPLY OF MATERIAL

The general requirements relating to supply ofmaterial are laid down in IS 1387.

5 MANUFACTURE

The material manufactured by cold-rolling shall besupplied in annealed (0), half hard (HB) or hard (HD)temper condition.

6 FREEDOM FROM DEFECTS

6.1 Surface of the material shall be clean and freefrom oxides, pin holes, blisters, flakes, scratches andother harmful defects. The edges slitted/unslitted ofstrips/foils should be free from edges burrs andcracks.

6.2 The surface of the material shall be flee fromcontaminants which would prevent satisfactorywetting and bonding of soldier joints under normalproduction condition.

7 CHEMICAL COMPOSITION

The material shall have the composition as given inTables 1 and 2.

8 PHYSICAL PROPERTIES

8.1 Hardness

The hardness of copper and brass strip/foil shall be asspecified in Table 3.

8.2 The average grain size and the limits of variationfor annealed temper shall be as agreed to between thepurchaser and the supplier.

8.2.1 The average grain size may be estimated bycomparing photo-micrographs shown in IS 4748.

9 DIMENSIONS AND TOLERANCES

The copper and brass strip/foil shall be supplied inthe thickness and widths specified by the purchasersubject to tolerances given in Table 4.

10 FLATNESS

The strip shall be free from wavers and buckles. Thisis checked by unrolling the strip on to a plain surface.

11 STRAIGHTNESS

11.1 The strip and foil shall be supplied with straightparallel edges.

11.2 The slit edge shall be fi-ee from burrs and frilling.

1

1S 3331:2007

Table 1 Chemical Composition of Copper Strips/Foils

(Clause 7)

sl Material Percent Chemical Analysis

No./ \

P Ag Cd Sn Other CuImpurities

(1) (2) (3) (4) (5) (6) (7) (8) (9)

J) Silver 0015-0.045 0.03 — — 0.05,Max 99.5, To be mutually agreedbearing 0.08 &fin between the supplier and

copper the purchaser

ii) Cadmium — — 0.05-0.2 — 0.05,Max Remainder To be carried in accordance

copper with IS 3186

iii) Tin 0.015-0.045 — — 0.07-0.2 99.5, To be mutually agreedbearing Min between the supplier and

copper the purchaser

NOTE — Keep phosphorous at lower limit when tin is towards higher limit.

Table 2 Chemical Composition of Brass Strips/Foils

(Clause 7)

SI Material Percent Chemical Analysis

No./ \Cu Pb Fe Sn Total Other Zn

Impurities

(1) (2) (3) (4) (5) (6) (7) (8) (9)

O Grade I 68.5 -71.5 0.02, Max 0.05, A4czx 0.03, Mux 0.2, Mux Remainder To be carried out in

accordance with IS 3685

ii) Grade H 64.5 -67.0 0.03, Mux 0.05, Max 0.05, Max 0.3, Max Remainder do

iii) Grade 111 61.5 -64.5 0.05, Max 0.075, Mux 0.075, Max 0.6, Max Remainder do

Table 3 Hardness of Copper and Brass Strip/Foil

(Clause 8.1)

S1No. Temper Copper HV Brass HV

(1) (2) (3) (4)

O O(A) 60, Max 85, Max

Ii) HL3 100-130

iii) ‘%H — 130-150

Iv) HD 105-I25 —

v) EH 125-145 —

NOTE — For guidance, a table giving correlation between load and Vlckers hardness obtained for various thickness is included in

Annex A.

2

IS 3331:2007

Table 4 Tolerance for Copper and Brass Strips/Foils

(Clause 9)

s} N(). “1’hickness Thickness Tolerance Width Width Tolerance

Ar 3

Normal Close Normal Close

(I) (2) (3) (4) (5) (6) (7)

i) LJpto and including + 7 percent of the + 0.003 mm Up to 100mm *O,lmm *0,075mm

O 16 mm thickness

11) Over ().16 mm and up +0,011 mm * 0.005 mm Over 100 mm +0.15mm *0.100mm

toO 25 mm +3 percent of thickness Upto310mm

12 EDGE-WISE CURVATURE (DEPTH OF ARC)

In any length or width of one meter of the material,the depth of arc shall not exceed 2 mm.

13 SAMPLING AND RETEST

13.1 Samples of copper and brass strips/foils of thesame composition, width, thickness and temper shallbe batched together. For each batch, the number ofsamples taken shall be as given in Table 5.

13.2 Retests

Should any one of the pieces first selected by thepurchaser or his representative fail to pass any of theprescribed tests, two further samples from the samebatch shall be selected for testing, one of which shallbe free from the strip or foil from which the originaltest sample was taken, unless that strip or foil has beenwithdrawn by the supplier. Should the test piece fromboth these additional samples pass, the batchrepresented by the test samples shall be deemed to havecomplied with this standard. Should the test piecefrom either of these additional samples fail, the batchrepresented by the test samples shall be deemed not tocomply with this standard.

14 DELIVERY

14.1 Each coil shall not contain more than two lengthsof strip,

14.2 The internal and external diameter of the coiland the minimum mass of each coil shall be mutuallyagreed to between the supplier and the purchaser.

15 PACKING

15.1 Coils shall be packed in such a way as to protect

them against;

a) ingress of moisture and other elements whichare likely to cause surface tarnishing anddamage,

b) damage of slit edges,

c) collapse of the inner diameter, and

d) unwinding of the strips from the coil whiletaking out the box and during handling.

15.2 Where coils have to be transported, they shall besecurely packed in strong wooden cases to resistbreakage of packing during handling and transit.

16 MARKING

16.1 Each coil shall be marked with the grade of thematerial, size, temper, name of the manufacturer, netand gross mass.

16.1.1 BIS Certljlcation Marking

The material may also be marked with the StandardMark.

16.1.1.1 The use of the Standard Mark is governedby the provisions of Bureau of Indian StandardsAct, 1986 and the Rules and Regulations madethereunder. The details of conditions under whichthe licence for the use of the Standard Mark may begranted to manufacturers or producers may beobtained fi-om the Bureau of Indian Standards.

17 TEST CERTIFICATE

The manufacturer/supplier shall provide test certificatefor each consignment giving information like lotnumber, coil number, corresponding chemicalcomposition, tensile test, compression test, etc.

1S 3331 :2007

Table 5 Sampling and Retest

(Clause 13. 1)

SINo. Number of Coils of Foil or Number of Coils of Foil or

Strip in the Lot Strip to be Selected

(1) (2) (3)

1) upto15 5

II) 16-25 8

Ill) 26-50 13

Iv) 51-100 20

v) 101-150 32

\l) 151-300 50

\ll) 301-500 80

Vlll) 501andabove 125

NC I’E— “l”hcsamples shall be cut otTcold and shall receive no further treatment except that they may be machined to the shape of thew{{p!txc hcfore being tested.

4

IS 3331:2007

ANNEX A

(Table 3)

CORRELATION BETWEEN VICKERS HARDNESS AND LOAD FOR VARIOUSTHICKNESSES OF COPPER AND BRASS STRIP!YFOILS

Thickness Vickers Load

mm Hardness g(H%’)

(1) (2) (3)

Thickness Vickers Loadmm Hardness g

(HV)

(1) (2) (3)

0.15 40-5556-85

86-170171-350

45-7576-150

151-350

40-6566-130131-260

40-60

61-120121-240

35-5556-105106-210

50-9596-190

50-8081-190

45-7576-170

40-7071-140141-300

40-65

66-130131-300

40-6566-130131-300

200

300500

1000

300500

1000

300500

1000

300

5001000

300500

1000

5001000

5001000

5001000

50010002000

5001000

2000

50010002000

0.05 50-80

81-150151-300

25

50100

0.06

0,07

50-110

111-120

50

100 0.16

50-8081-160

161-230

50100

200 0.17

40-60

61-120

121-180

50100

200

0.08

0.18

0.09 50-9596-140141-260

100

200

300 0.19

100

200

300

0,10

0.11

40-75

76-110111-190

0.20

0.21

0.22

0.23

40-65

66-95

96-160

161-300

100

200300500

0.12 40-5556-80

81-130131-260

100

200

300500

0.13 50-7071-115116-230

200300

500

0.24

200300

500

0.14 40-6061-100

101-200

0.25

5

IS 3331:2007

ANNEX B

(Foreword)

COMMITTEE COMPOSITION

Copper and Copper Alloys Sectional Cornrnittee, MTD 8

Organization

Indian Copper Development Centre, Kolkata

Aganval Metal Works, Rewari

Alcobex Metals Ltd, Jodhpur

All India Air Conditioners & Refrigeration Association, Delhi

Bhabha Atomic Research Centre, Mumbai

13harat Electronics Ltd, Bangalore/Ghaziabad

Bharat Heavy Electrical Ltd, Bhopal

B!rla Copper Ltd, Bharuch

Crompton Grcaves Ltd, Mumbai

DGS&D (Quality Assurance Wtng), KolkatdNew Delhi

Finolex Cable Ltd, Bangalore

Gem Sanitary Appliances P Ltd. Delhi

Hindustan Cables Ltd, Burdwan

Hindustan Copper Ltd, Kolkata

India Govt Mint, Hyderabad

lnd!an Telephone Industries Ltd, Bangalore

Indoswe Engineers Pvt Ltd, Pune

International Copper Promotion Council (India), Mumbai

Larsen & Toubro Ltd, Mumbai

Mmlstry of Defence (DGQA), Ambernath

Mlntstry of Defence (OFB), Kolkata

Ministry of[>efence (DMRL), Hyderabad

Ministry of Railways (RDSO), Lucknow

National Metallurgical Laboratory, Jamshedpur

National Test House. Kolkata

Representative

DR D, D. SARKAR(Chairman)

SHRJD. K. JAJN

SHRJ0. P. RANA(Alternaie)

SHRJG. C. KANUNGO

SHJUS. D. PUROHIT(Alternate)

SHRJA. H. GIDWANI

SHRJA. P. KHURANA(Alternate)

SHRJV. K. TANGRJ

SHJUS. K. GUPTA(Alternate)

SHIUSRIDHARS, NADIGER

SHruANUJSJNGH(Alternate)

REPRF5ENTAmW

SHJUCHAKARVARTJSHRIB. M. SHARMA(Alternate)

REPRESEIWAIWE

SHRIB. DASGLTTA

SHRJS. K. PANDEY(Alternate)

REPRESENTATIVE

SHRJB. K. SJNGHAL

SHRJV. K. CHOWDHARY(Alternate)

SHRIA. K. NAG

SHRJP. N. GANGOPADHVAY

SHRJM. J. RAY

SHRJV. V. PRABHU

SHRIMD. DAWOOD(Ahernate)

SHRJU. K. JATIA

SHtUS. K. JAIN(Allerrrate)

SHJUNAVEENSHLKLA

SHRJNARSIMHAN(Ahertrate)

SHRIR.C. AGARWAL

SHRIU. R. JOSHI(Alternate)

SHRtP. C. GUPTA

SHRJR, K. VARSHNEY(Alternate)

SHRIR. S. SINGH

SHRJP. S.BANDHOPADHVAY(Alterrrafe)

DR S. NAGARJONA

SHJUA. K. MANDAL

SHRIS. K. DAS (Alternate)

DR T, S. N. SANKARNAJWYAN

SHRJK. K. GUPTA(Alternate)

DR SHVAMALKR. S,AH-A

SHRIASHOKEBASU(Alternafe)

6

IS 3331:2007

Orgarrizatlon

Natmnal Wire and Metal Industries, Mumbai

ordance Factory, Katni

Rapsarl Engineering Industries Ltd, Bangaiore

Regional Research Laboratory, Thiruvananthapuram

Saru Copper Alloy Semis Pvt Ltd, Meerut

Sterl]te Industries India Ltd, Mumbai

The Indian Smelting & Refining Co, Mumbai

‘1’hcInstitute of Iodian Foundrymen, Ghaziabad/New Delhi

vanw Engineers Pvt Ltd, Pune

Vo\tas Ltd. lhanc

111SIlirectcrrate General

Representative(s)

SHIUHASMUKHR. ME~A

SHRJS. R. RANAGOR(Alternate)

DR A. S. BALGIR

SHRJJ. Z. WARKADE(Alternate)

DR P. SRIRAM

SHRIK. N. GANAPATHV(Alternate)

DR T. PRASADRAO

SHRJD. P. JAIN

SHIUSANJEEVJAJN(,41fernate)

SHRIBALCHANDRAKAMAT

SHRIA. N. CHAKRAVORIHY(Ahernate)

SHIUD. BHAITACHARYA

SHRJM, P, SAHLOT(Alternate 1)

SHMV D. KELUSKAR(.411emare II)

SHKIK. S. SATYANARAYANA

SHRJA. K. ANAND(Allerrraje)

SHSUS. K. KHANDEKAR

SHRJK.P.VELAYODHAN(Alternate)

SHRIP. D. RAO

SHRIS. K. GUPTA,Scientist ‘F’ & Head (MTD)[Representing Director General (Ex-oj?cio)]

Member SecretatySHRIDEEPAKJm

Scientist ‘E’ (MTD), BIS

7

Illllmlilll~11: ._–-c.-%

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