Chemical Composition of Steel ( Carbon steel, Stainless Steel, Special Alloy )

Chemical Composition of Steel ( Carbon steel, Stainless Steel, Special Alloy )


Steel, alloy of iron and carbon in which the carbon content ranges up to 2 percent (with a higher carbon content, the material is defined as cast iron). By far the most widely used material for building the world’s infrastructure and industries, it is used to fabricate everything from sewing needles to oil tankers.

Below is carbon steel and stainless steel chemical table which shows steel grade, code, chemical composition and mechanical properties.
 
Grade Code Chemical Composition/%(≤) Mechanical Properties≥
C Mn P S Si Ni Cr Mo Nb N Residual Elements/%(≤)
Al Cu Ni Cr W V  
Amount
σb /MPa σs
/MPa
δ5/
%
ψ/% Temp≤℃
WC1 JB/T
5263
0.25 0.50~0.80 0.035 0.040 0.60 - - 0.45~
0.65
- - - 0.50 0.50 0.35 0.10 - 1.00 450~
620
240 24 35 482
WC6 0.05~
0.20
0.50~
0.80
0.035 0.040 0.60 - 1.00~
1.50
0.45~
0.65
- - - 0.50 0.50 - 0.10 - 1.00 485~
655
275 20 35 593
WC9 0.05~
0.18
0.40~
0.70
0.035 0.040 0.60 - 2.00~
2.75
0.90~
1.20
- - - 0.50 0.50 - 0.10 - 1.00 485~
655
275 20 35 593
C12A 0.12 0.30~
0.60
0.02 0.018 0.20~
0.50
0.40 8.0~
9.5
0.85~
1.05
0.06~
0.10
0.03~
0.07
0.04 - - - - 0.18~
0.25
- 585~
760
415 20 45 648
WC6 ASTM A217 0.05~
0.20
0.50~
0.80
0.040 0.045 0.60   1.00~
1.50
0.45~
0.65
- - - 0.50 0.50 - 0.10 - 1.00 550~
725
345 18 45  
WC9 0.05~
0.18
0.40~
0.70
0.040 0.045 0.60   2.00~
2.75
0.90~
1.20
- - - 0.50 0.50 - 0.10 - 1.00 550~
725
345 18 45  
C5 0.20 0.40~
0.70
0.040 0.045 0.75   4.00~
6.50
0.45~
0.65
- - - 0.50 0.50 - 0.10 - 1.00 620~
795
415 18 35  
C12 0.20 0.35~
0.65
0.040 0.045 1.00 - 8.00~
10.0
0.50~
1.20
- - - 0.50 0.50 - 0.10 - 1.00 620~
795
415 18 35  
C12A 0.08~
0.12
0.30~
0.60
0.02 0.010 0.20
0.50
0.40 8.0~
9.5
0.85~
1.05
0.06~
0.10
0.03~
0.07
0.04 - - - - 0.18~
0.25
- 585~
760
415 20 45  
 
Grade Code Chemical Composition/%(≤) Mechanical Properties≥
C Si Mn Cr Ni Mo Cu Ti S P N σb/MPa σs/MPa δ5/% ψ/%
ZG08Cr18Ni9 GB/T
12230
0.08 0.15 0.8~2.0 17.0~20.0 8.0~11.0 0.03 0.040 441 196 25 32
ZG12Cr18Ni9 0.12 0.15 0.8~2.0 17.0~20.0 8.0~11.0 0.03 0.045 441 196 25 32
ZG08Cr18Ni9Ti 0.08 0.15 0.8~2.0 17.0~20.0 8.0~11.0 5(C—0.02)
~0.7
 
0.03 0.040 441 196 25 32
ZG12Cr18Ni9Ti 0.12 0.15 0.8~2.0 17.0~20.0 8.0~11.0 0.03 0.045 - 441 196 25 32
ZG08Cr18Ni12Mo2Ti 0.08 0.15 0.8~2.0 16.0~19.0 11.0~13.0 2.0~3.0 0.03 0.040 490 216 30 30
ZG12Cr18Ni12Mo2Ti 0.12 0.15 0.8~2.0 16.0~19.0 11.0~13.0 2.0~3.0 0.03 0.045 490 216 30 30
CF3 0.03 2.00 1.50 17.0~21.0 8.0~12.0 0.50 0.04 0.04 485 205 35 -
CF8 0.08 2.00 1.50 18.0~21.0 8.0~11.0 0.50 0.04 0.04 485 205 35 -
CF3M 0.03 1.50 1.50 17.0~21.0 9.0~13.0 2.0~3.0 0.04 0.04 485 205 30 -
CF8M 0.08 1.50 1.50 18.0~21.0 9.0~12.0 2.0~3.0 0.04 0.04 485 205 30 -
CF8C 0.08 2.00 1.50 18.0~21.0 9.0~12.0 0.50 0.04 0.04 485 205 35 -
CF3 ASTM
A351
0.03 2.00 1.50 17.0~21.0 8.0~12.0 0.50 0.04 0.04 485 205 35 -
CF8 0.08 2.00 1.50 18.0~21.0 8.0~11.0 0.50 0.04 0.04 485 205 30 -
CF3M 0.03 1.50 1.50 17.0~21.0 9.0~13.0 2.0~3.0 0.04 0.04 485 205 30 -
CF8M 0.08 1.50 1.50 18.0~21.0 9.0~12.0 2.0~3.0 0.04 0.04 485 205 30 -
CF8C 0.08 2.00 1.50 18.0~21.0 9.0~12.0 0.50 0.04 0.04 485 205 30 -