Designation
DIN: | X 33 CrS 16
|
AFNOR:
| Z 35 CD 17.S
|
UNI: | - |
AISI:
| ≈ 422 + S |
Chemical composition:
C | 0.33 |
Si | 0.30 |
Mn | 0.80 |
Cr | 16.00 |
S | 0.06 |
Ni | 0.30 |
Strength:
280 - 325 HB
(≈ 950 - 1100 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:
To the mould making overview
To the die making overview