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1.4923 Chemical composition
| C:0.18~0.24% | Si:0.1~0.5% |
| Mn:0.4~0.9% | P≤0.025% |
| S≤0.015% | Ni:0.3%~0.8% |
| Cr:11.0~12.5% | Mo:0.8~1.2% |
| V:0.25~0.35% |
Heat Treatment:
Quenching In Oil And Tempering.
1.4923, may only be welded once special precautions have been taken. For example, the work piece must be pre-heated to a temperature between 400 and 450°C, depending on the geome-
try of the component. During welding, an interpass temperature of between 400 and 500°Cmust be maintained. After welding, the component can be immediately annealed or tempered.
If a tempering treatment is performed, then the weldment must be slowly cooled to a temperature between 100 and 150°C. After complete transformation to martensite, the component must be tempered at a temperature between 740 and
780°C for a period of at least 4 hours. Tempering is to be followed by slow cooling.
Mechanical Properties:
| Thickness | Proof Strength | Tensile Strength | Elongation After facture A% | Reduction in area Z% | Impact energy | Hardness |
| ≤250 | 700 Mpa | 900-1050Mpa | 11/10/8 | 35/35/30 | 25/20/20 | 265~315 |
| >250 | 700 Mpa | 850-1050Mpa | 11/10/8 | 35/35/30 | 25/20/20 | 265~315 |
