1.2085 Tool steel

Designation

Chemical composition:

Strength:

≈ 1080 N/mm²

Thermal conductivity at 100 °C:

18 W/m K

Character:

corrosion resistant, pre-toughened tool steel with good machinability due to Sulphur additive

Application:

plates for corrosion resistant mold bases and die sets;
 molds for corrosive plastics; the expense for protection and care of mold tools is reduced thanks to increased corrosion resistance; not suitable for mold inserts

Treatment by

unusual:
Polishing, etching, EDM, nitriding, hard chroming

Heat treatment:

Usually no heat treatment is required

Soft annealing:
 850 to 880 °C for about 2 to 5 hours
 slow controlled cooling, further cooling in air, annealing hardness max. 240 HB

Hardening:
 1000 to 1030 °C
 keeping 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 hour per 20 mm part thickness;
 tempering twice is recommended

Annealing graph:

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