Products
Characteristics
Designation
Strength
max. 250 HB
(≈ max. 850 N/mm²)
Chemical composition
Thermal conductivity at 100 °C
36 W/(mK)
Character
Steel for through hardening, with high-temperature resistance, through hardenability and toughness
Application
Machining
Suited:
EDM, nitriding, etching and hard chrome plating
Polishing: technical polishing possible
Use
Extrusion dies, hot-forging tools, die plates for processing tin, lead and zinc alloys
Heat treatment
Soft annealing:
650 to 700 °C, about 4 to 5 hours
Slow, controlled cooling inside the furnace of 10 to 20 °C per hour to about 600 °C
Further cooling in air, max. 248 HB
Hardening:
950 to 980 °C
Maintain curing temperature for 15 to 30 minutes
Quenching in water/oil
Obtainable hardness: 56 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening
Minimum time in furnace: 1 hour per 20 mm part thickness
