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

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

  • Dec 30, 2022
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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 -

 
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