Products
Characteristics
Designation
Strength
max. 215 HB
(≈ 710 N/mm²)
Chemical composition
Thermal conductivity at 20 °C
50 W/(mK)
Character
Unalloyed tool steel with excellent machinability; case hardening steel, suitable for flame and inductive hardening
Application
Machining
Unusual:
Polishing, etching, EDM, nitriding, hard chrome plating
Heat treatment
Soft annealing:
680 to 710 °C, about 2 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. 190 HB
Hardening:
800 to 830 °C
Quenching in water
Obtainable hardness: 58 HRC
Hardening depth: 3−5 mm
Max. 15 mm through-hardenable
Tempering:
Slow heating to tempering temperature immediately after hardening, to 180 to 300 °C depending on desired hardness
1 hour per 20 mm: at least 2 hours
