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SNCM420 Nickel Chromium Molybdenum Alloy Steel
SNCM420 (4320) is commonly used to manufacture mechanical components requiring high toughness and wear resistance, such as bearings, gears, drive shafts, and various automotive components.
The steel codes of different countries are as below：
● American AISI: 4320
● Japanese JIS: SNCM420
● Chinese GB: 20CrNi2Mo
The steel codes of different countries are as below：
● American AISI: 4320
● Japanese JIS: SNCM420
● Chinese GB: 20CrNi2Mo
| C% | Si% | Mn% | P% | S% | Cr% | Mo% | Ni% | Cu% |
|---|---|---|---|---|---|---|---|---|
| 0.17-0.23 | 0.15-0.35 | 0.4-0.7 | 0≦0.03 | 0≦0.03 | 0.4-0.65 | 0.15-0.3 | 1.6-2 | 0≦0.3 |