The 20Mn2 steel plate/sheet is one kind of high alloy steel forging products ,20Mn2 steel sheet always called 1320,SMn 420,20 Mn5 under different standers.
| 20Mn2 | Comparision of steel grades | |
| AISI | 1320 | |
| JIS | SMn 420 | |
| DIN | 20 Mn5 | |
20Mn2 steel plate Chemical Composition [%]
| Grade | C | Si | Mn | Cr | Mo | V |
| 20Mn2 | 0.17- 0.24 | 0.17- 0.37 | 1.40- 1.80 | ≤0.30 | - | - |
20Mn2 steel sheet Mechanical Properties
| Grade | 6b N/mm2 | 6 s N/mm2 | Δδ %δ % | ψ% | AK J |
| 20Mn2 | 785 | 590 | 10 | 40 | 47 |
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