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| Element | Content |
|---|---|
| C | 0.09-0.13 Mn 0.30-0.60 Si 0.10-0.50 P 0.020 S 0.010 Cr 8.50-9.50 Mo 0.90-1.10 W 0.90-1.10 V 0.18-0.25 Nb 0.06-0.10 N 0.040-0.090 |
Tensile 620 MPa min Yield 440 MPa min Elong 20% min
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