Due to its hardening properties, Alloy 420 is not often welded, although it is possible. Martensitic stainless steels are designed for high hardness and sometimes other properties are to some degree compromised. Corrosion resistance is lower than the common austenitic grades and their useful operating range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
| Grade | Chemical Component % | Ni | ||||||||||
| C | Cr | Mn | P | S | Mo | Si | Cu | N | Other | |||
| 316 | 0Cr17Ni12Mo2 | ≤0.08 | 16.00-18.50 | 10.00-14.00 | ≤2.00 | ≤0.035 | ≤0.030 | 2.00-3.00 | ≤1.00 | - | - | - |
| 316L | 00Cr17Ni14Mo2 | ≤0.030 | 16.00-18.00 | 10.00-14.00 | ≤2.00 | ≤0.035 | ≤0.030 | 2.00-3.00 | ≤1.00 | - | - | - |
| 316N | 0Cr17Ni12Mo2N | ≤0.08 | 16.00-18.00 | 10.00-14.00 | ≤2.00 | ≤0.035 | ≤0.030 | 2.00-3.00 | ≤1.00 | - | 0.10-0.22 | - |
| 316Ti | 00Cr17Ni13Mo2N | ≤0.080 | 16.00-18.50 | 10.00-14.00 | ≤2.00 | ≤0.035 | ≤0.030 | 2.00-3.00 | ≤1.00 | - |
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