Products
Characteristics
Designation
Strength
33–38 HRC
(≈ 1,050–1,200 N/mm²)
Chemical composition
Thermal conductivity at 250 °C
41.3 W/(mK)
Character
Modified, quenched and tempered, good polishability and excellent grainability
High thermal conductivity and wear resistance
Application
Machining
Suited:
Hard chrome plating
Ideally suited:
Polishing, etching, EDM, nitriding
Use
Cavity plates without dimension restrictions, with deep cavities and high core loads
Heat treatment
Already pre-hardened; usually no heat treatment required
Soft annealing:
720 °C 1 hour per 25 mm part thickness
Slow, controlled cooling inside the furnace
Maximum 245 HB
Hardening:
880 °C
Maintain curing temperature for 15 to 30 minutes
Cooling in hot bath/oil/compressed gas
Obtainable hardness: 50 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening
Minimum time in furnace: 1 hour per 25 mm part thickness
Technical tip
- Consistent hardness over the entire cross section
- Improved weldability
- Higher toughness than 1.2738
