S355J2G3 IM
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Page 1 of 2 August 2003 The future in metal Features • Calcium treated steel for Inclusion modification • Contains soft, deformable calcium aluminates encapsulated in manganese sulphide rather than hard alumina oxide inclusions • Controlled analysis for repeatable strength and fatigue properties. • Low carbon for weldability • Grain size 5 or finer Application • Welded, bolted or riveted applications Chemical composition (wt%) Min Max C - 0.23 Si - 0.60 Mn - 1.70 P - 0.045 S - 0.045 Al - 0.05 V - 0.08 Guaranteed Machinability S355J2G3 IM steel, in the as-rolled condition, will give a V15 test speed > 370m/min using P10 uncoated carbide tools to ISO3685 condition “C” Benefits The modified inclusions are less abrasive to cutting tools, acting as a lubricant and barrier at the tool / workpiece interface. Compared with the standard grade the IM steel gives: • Improved machinability with reduced machining cost • Up to 30% longer tool life for a given cutting speed • Up to 20% higher cutting speeds for a given tool life Supply condition and availability • Round bars from 20-250mm dia • As-rolled or normalised Related specifications • EN 10025 Technical Service Please contact our Customer Technical Service Department for further information or assistance in the use of IM steels. An improved machining, inclusion modified low carbon manganese steel. Corus Engineering Steels S355J2G3 ‘IM’
Transcript of S355J2G3 IM
Page 1 of 2
August 2003The future in metal
Features • Calcium treated steel for Inclusion modification
• Contains soft, deformable calcium aluminates
encapsulated in manganese sulphide rather than
hard alumina oxide inclusions
• Controlled analysis for repeatable strength and
fatigue properties.
• Low carbon for weldability
• Grain size 5 or finer
Application• Welded, bolted or riveted applications
Chemical composition (wt%)
Min Max
C - 0.23
Si - 0.60
Mn - 1.70
P - 0.045
S - 0.045
Al - 0.05
V - 0.08
Guaranteed Machinability S355J2G3 IM steel, in the as-rolled condition, will give a
V15 test speed > 370m/min using P10 uncoated carbide
tools to ISO3685 condition “C”
BenefitsThe modified inclusions are less abrasive to cutting
tools, acting as a lubricant and barrier at the tool /
workpiece interface.
Compared with the standard grade the IM steel gives:
• Improved machinability with reduced machining cost
• Up to 30% longer tool life for a given cutting speed
• Up to 20% higher cutting speeds for a given tool life
Supply condition and availability• Round bars from 20-250mm dia
• As-rolled or normalised
Related specifications • EN 10025
Technical Service Please contact our Customer Technical Service
Department for further information or assistance in the
use of IM steels.
An improved machining, inclusion modified low carbonmanganese steel.
Corus Engineering Steels
S355J2G3 ‘IM’
Page 2 of 2
August 2003
Machining Data (all IM steels)Improved machinability is achieved across the full range of IM engineering steels irrespective of hardness level.
Bar Size Proof Stress Tensile Strength Elongation Impact Energy
(dia) Re N/mm2
Rm N/mm2
A5 % Joules (-20°C)
mm min min min
20-40 345 490-630 22 27
40-63 335 490-630 21 27
63-80 325 490-630 20 27
80-100 315 490-630 20 27
100-150 295 470-630 18 27
150-200 285 450-630 17 23
200-250 275 450-630 17 23
Machinability
V15 m/min
Hardness HV
600
500
400
300
200
100
0
100 150 200 250 300 350 400
IM
Standard
The future in metal
Corus Engineering Steels
S355J2G3 ‘IM’
Mechanical properties (normalised)
Corus Engineering SteelsPO Box 50Aldwarke LaneRotherhamS60 1DWUnited KingdomT +44 (0) 1709 371234F +44 (0) 1709 826233www.corusengineeringsteels.com
Care has been taken to ensure thatthis information is accurate, but CorusGroup plc, including its subsidiaries,does not accept responsibility orliability for errors or information whichis found to be misleading.
Copyright 2003Corus
www.corusgroup.com
