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[Chemical requirements of ferritic and martensitic stainless steels]
| Grade | Composition,% | |||||||||||
| C,max | Mn,max | P,max | S,max | Si,max | N | Cr | Mo | AI | Cu | Ni | Se | |
| Martensitic | ||||||||||||
|
MT 403 MT 410 MT 414 MT 416Se MT 431 MT 440A |
0.15 0.15 0.15 0.15 0.20 0.60 to 0075 |
1.00 1.00 1.00 1.25 1.00 1.00 |
0.040 0.040 0.040 0.060 0.040 0.040 |
0.030 0.030 0.030 0.060 0.030 0.030 |
0.50 1.00 1.00 1.00 1.00 1.00 |
0.50 max 0.50 max 1.25-2.50 0.50 max 1.25-2.50 ... |
11.5-13.0 11.5-13.5 11.5-13.5 12.0-14.0 15.0-17.0 16.0-18.0 |
0.60 max ... ... ... ... 0.75 max |
... ... ... ... ... ... |
... ... ... ... ... ... |
... ... ... ... ... ... |
... ... 0.12-0.20 ... ... ... |
| Ferritic | ||||||||||||
|
MT 405 MT 429 MT 430 MT 443 MT 446-1 MT 446-2A 29-4 29-4-2 |
0.08 0.12 0.12 0.20 0.20 0.12 0.010 0.010 |
1.00 1.00 1.00 1.00 1.50 1.50 0.30 0.30 |
0.040 0.040 0.040 0.040 0.040 0.040 0.025 0.025 |
0.030 0.030 0.030 0.030 0.030 0.030 0.020 0.020 |
1.00 1.00 1.00 1.00 1.00 1.00 0.20 0.20 |
0.50 max 0.50 max 0.50 max 0.50 max 0.50 max 0.50 max 0.15 max 2.0-2.5 |
11.5-14.5 14.0-16.0 16.0-18.0 18.0-23.0 23.0-30.0 23.0-30.0 28.0-30.0 28.0-30.0 |
... ... ... ... ... ... 3.5-4.2 3.5-4.2 |
0.10-0.30 ... ... ... ... ... ... ... |
... ... ... 0.90--1.25 ... ... 0.15 max 0.15 max |
... ... ... ... 0.25 max 0.25 max 0.020 max 0.020 max 0.020 maxB |
|
|
A MT446-2 is a lower carbon version of MT446-1,that has a lower tensile strength but impoved ductility and toughness. B Carbon plus nitrogen= 0.025 max%. |
||||||||||||
[Chemical requirements of austenitic-ferritic stainless steels A]
| Grade | Composition,% | ||||||||||
| C | Mn,max | P,max | S,max | Si,max | Ni | Cr | Mo | N | Cu | Others | |
|
S31260 S31803 S32101 S32205 S32304 S32506 S32550 S32707 S32750 S32760B S32906 S32808 S32950 S39274 |
0.030 0.030 0.040 0.030 0.030 0.030 0.040 0.030 0.030 0.05 0.030 0.030 0.030 0.030 |
1.00 2.00 4.0-6.0 2.00 2.50 1.00 1.50 1.50 1.20 1.00 0.80-1.50 1.10 2.00 1.00 |
0.030 0.030 0.040 0.030 0.040 0.040 0.040 0.035 0.035 0.030 0.030 0.030 0.035 0.030 |
0.030 0.020 0.030 0.020 0.040 0.015 0.030 0.010 0.020 0.010 0.030 0.010 0.010 0.020 |
0.75 1.00 1.00 1.00 1.00 0.90 1.00 0.50 0.80 1.00 0.80 0.50 0.60 0.80 |
5.5-7.5 4.5-6.5 1.35-1.70 4.5-6.5 3.0-5.5 5.5-7.2 4.5-6.5 5.5-9.5 6.0-8.0 6.0-8.0 5.8-7.5 7.0-8.2 3.5-5.2 6.0-8.0 |
24.0-26.0 21.0-23.0 21.0-22.0 22.0-23.0 21.5-24.5 24.0-26.0 24.0-27.0 26.0-29.0 24.0-26.0 24.0-26.0 28.0-30.0 27.0-27.9 26.0-29.0 24.0-26.0 |
2.5-3.5 2.5-3.5 0.10-0.80 3.0-3.5 0.05-0.60 3.0-3.5 2.9-3.9 4.0-5.0 3.0-5.0 3.0-4.0 1.50-2.60 0.80-1.20 1.00-2.50 2.5-3.5 |
0.10-0.30 0.08-0.20 0.20-0.25 0.14-0.20 0.05-0.20 0.08-0.20 0.10-0.25 0.30-0.50 0.24-0.32 0.20-0.30 0.30-0.40 0.30-0.40 0.15-0.35 0.24-0.32 |
0.20-0.80 ... 0.10-0.80 ... 0.05-0.60 ... 1.50-2.50 1.0 0.50 0.50-1.00 0.80 ... ... 0.20-0.80 |
W 0.10-0.50 ... ... ... ... W 0.05-0.30 ... Co 0.5-2.0 ... W 0.50-1.00 ... W 2.10-2.50 ... W 1.50-2.50 |
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