X155CrVMo12-1

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Indicatory analysis: 
C 1.53
Si 0.30
Mn 0.35
Cr 12.00
Mo 0.80
V 0.80

Strength: ≈ 850 N/mm²

Thermal conductivity at 100 °C: 21 W/ m K

Character: 
high-alloy steel for through-hardening with moderate machinability; extremely wear resistant and low warpage, good dimensional stability, toughness and through hardenability

Application: 
mould plates and inserts as well as wear plates and cutting dies with increased wear resistance

Treatment by
Polishing:
ideal when hardened

Nitriding: 
very well suited, due to the fact that the hardness of the base material will not fall below 60 HRC

EDM, etching, hard chroming » possible

Heat treatment:
Soft annealing:
800 to 850 °C for about 2 to 5 hours slow controlled cooling of 10 to 20 °C per hour to about 600 °C further cooling in air, max. 235 HB

Hardening: 
1020 °C
1060 to 1080 °C
quenching in oil/air/hot bath
obtainable hardness: 63−65 HRC

Tempering:
slow heating to tempering temperature (to avoid forming of cracks) immediately after hardening; triple tempering at max. secondary hardening temperature is recommended; rapid cooling following the tempering improves the dimensional stability; maximum hardness achievable after tempering: 60-62 HRC

Technical Tip: 
secondary hardening, very good base material for nitriding or coating