Designation
DIN: | X 100 CrMoV 5 |
AFNOR: | Z 100 CDV 5
|
UNI: | X 100 CrMoV 5-1 KU |
AISI: | A2
|
Chemical composition:
C | 1.00 |
Si | 0.30 |
Mn | 0.50 |
Cr | 5.20 |
Mo | 1.10 |
V | 0.20 |
Strength:
max. 240 HB
(≈ max. 820 N/mm²)
Thermal conductivity at 100 °C:
19 W/m K
Character:
steel for through hardening with good machinability, high wear resistance and low warpage; very good dimensional stability, toughness and through hardenability
Application:
mould plates and inserts as well as cutting punches, wear plates and cutting plates with high requirements on toughness
Treatment by
is possible:
Polishing, etching, nitriding, hard chroming
Heat treatment:
Soft annealing:
800 to 840°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:
950°C to 980°C
quenching in calm air
obtainable hardness: 62 HRC
Tempering:
slow heating to tempering temperature immediately after hardening; tempering twice is recommended; rapid cooling following the tempering improves the dimensional stability;
maximum hardness achievable after tempering: 58−60 HRC
Annealing graph:
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