I Stainless Steel:Martensitic/Ferritic/Precipptation Hardening 
                Stainless Steel Chemical Composition

Unit:%
Type C Si Mn P S Ni Cr Cu Other
403 Max
0.15
Max
0.50
Max
1.00
Max
0.04
Max
0.03
- 11.50~
13.00
   
410 Max
0.15
Max
1.00
Max
1.00
Max
0.040
Max
0.03
- 11.50~
13.00
   
416 Max
0.15
Max
1.00
Max
1.25
Max
0.06
Max
0.15
- 12.00~
14.00
   
420 Max
0.08
Max
0.75
Max
1.00
Max
0.040
Max
0.03
Max
1.00
16.00~
18.00
   
420J2 Max
0.40
Max
1.00
Max
1.00
Max
0.040
Max
0.03
- 12.00~
14.00
   
420F 0.26~
0.40
Max
1.00
Max
1.25
Max
0.06
Min
0.15
- 12.00~
14.00
   
431 Max
0.20
Max
1.00
Max
1.00
Max
0.04
Max
0.03
1.25~
2.0
15.00~
17.00
   
440C 0.95~
1.20
Max
1.00
Max
1.00
Max
0.04
Max
0.03
- 16.00~
18.00
   
430 Max
0.12
Max
0.75
Max
1.00
Max
0.04
Max
0.03
- 16.00~
18.00
   
430F Max
0.12
Max
1.00
Max
1.25
Max
0.06
Min
0.15
- 16.00~
18.00
   
630 Max
0.07
Max
1.00
Max
1.00
Max
0.03
Max
0.03
3.0~5.00 15.00~
17.50
3.00~
5.00
Nb0.15
~0.45
Other grades can be developed per customer's request
 
 

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