Products
Characteristics
Designation
Strength
280–325 HB
(≈ 950–1,100 N/mm²)
Chemical composition
Thermal conductivity at 100 °C
18 W/(mK)
Character
Corrosion-resistant, high-alloyed, pre-hardened tool steel with good machinability due to the sulphur (S) addition
Application
Machining
Unusual:
Polishing, etching, EDM, nitriding, hard chrome plating
Use
Plates for corrosion-resistant mould bases and die sets
Moulds for corrosive plastics; increased corrosion resistance reduces mould maintenance requirements
Not suitable for mould inserts
Heat treatment
Usually no heat treatment is required.
Soft annealing:
850 to 880 °C, about 2 to 5 hours
Slow, controlled cooling inside the furnace
Annealing hardness max. 240 HB
Hardening:
1,000 to 1,030 °C
Maintain curing temperature for 30 minutes
Quenching in oil is preferable
Obtainable hardness: 48 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening
Minimum time in furnace: 2 hours per 20 mm part thickness
Tempering twice is recommended
