PROPRIETARY Micro-Melt M42 Alloy Tool steels
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PROPRIETARY Micro-Melt M42 Alloy Chemical Composition
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PROPRIETARY Micro-Melt M42 Alloy Physical Properties
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PROPRIETARY Micro-Melt M42 Alloy Heat Treatments
- Annealing: heat slowly to 843/899°C (1550/1650°F), hold until the entire mass is heated through, and cool slowly (do not exceed 11°C [20°F] per hour) in the furnace to about 538°C (1000°F), after which the cooling rate may be increased. The expected hardness following this treatment is Brinell 235/269.
Hardening: preheat to 816/871°C (1500/1600°F) in a neutral salt bath. After thorough preheating, transfer to a salt bath with a temperature maintained at 1177/1204°C (2150/2200°F) and oil quench. Small sizes under about 25.4 mm (1") in diameter or delicate sections may be hardened by cooling in still air. It is also acceptable to quench in molten salt at temperatures of 538/593°C (1000/1100°F), equalizing for 5 minutes per inch followed by air cooling.
Stress Relieving: to relieve the strains of machining, heat slowly to 621/677°C (1150/1250°F), allow to equalize, then cool in still air.
Tempering: tools should be tempered immediately after the completion of the quench. The tempering temperature may be varied according to the desired hardness but is usually in the range of 538/566°C (1000/1050°F). Triple tempering is always suggested.
PROPRIETARY Micro-Melt M42 Alloy International Equivalent Materials
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- 1Heat Treatment
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