Designation
DIN: | X 38 CrMo 16 |
AFNOR: | Z 35 CD 17 |
UNI: | X 38 CrMo 16 KU |
AISI: | ≈ 422 |
Chemical composition:
Strength:
280 - 325 HB
(≈ 950 - 1100 N/mm²)
Thermal conductivity at 100 °C:
18 W/m K
Character:
corrosion resistant, high-alloy, polishable, pre-toughened tool steel
Application:
moulds for processing corrosive plastics
Treatment by
good suitability for:
Polishing
is possible:
Etching, EDM
Nitriding:
reduces the corrosion resistance
Heat treatment:
already pre-toughened; usually no heat treatment required
Soft annealing:
760 to 800 °C for about 4 to 5 hours; slow controlled cooling of 10 to 20 °C per hour to about 650 °C; further cooling in air, max. 230 HB
Hardening:
1030 to 1050 °C
15 to 30 minutes keeping curing temperature
quenching in water/oil
obtainable hardness: 49 HRC
Tempering:
Slow heating to tempering temperature immediately after hardening. Minimum time in furnace: 1 hour per 20 mm part thickness
Annealing graph:
Technical tip:
- corrosion resistant like 1.2085
- for demanding surfaces
Para a visão geral do fabrico de moldes
To the die making overview