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| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| OCR12VMS | 844 | 1.2379* | X155CrVMo12-1 | - | D2 |
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| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 2.05 | 0.25 | 0.30 | 11.50 | - | - | - | - | - |
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Description OCR12VMS is dimensionally stable, high carbon and high chromium steel. Very suitable for air hardening. Very good toughness. Applications High-duty cutting tools (dies and punches), blanking and punching tools, woodworking tools, shear blades for cutting light metals, deep drawing and cold extrusion, pressing tools, small moulds for the plastics. |
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Physical properties (avarage values) at ambient temperature: Modulus of elasticity [103 x N/mm2]: 210 Density [g/cm3]: 7.70 Thermal conductivity [W/m.K]: 20.0 Electric resistivity [Ohm mm2/m]: 0.65 Specific heat capacity[J/g.K]: 0.46 Continuous Cooling Transformation (CCT) Diagram  Time-Temperature Transformation (TTT) Diagram  |
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Soft Annealing Heat to 800-850�C, cool slowly in furnace. This will produce a maximum Brinell hardness of 250. Stress Relieving Stress relieving to remove machining stresses should be carried out by heating to 650-700�C, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment. Hardening Harden from a temperature of 1020-1040�C followed by air quenching or warm bath quenching 500-550�C. Hardness after quenching is 63-65 HRC. Tempering Tempering temperature: See the diagram bellow. Effect of Tempering Temperature on Hardness  |
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Forging
Hot forming temperature: 1050-850�C.
Machinability
No data.
