Steel Specification: 1.2842 / 90MnCrV8
Standard: DIN EN ISO
Numerical designation: 1.2842
Designation: 90MnCrV8
Chemical Composition (typical values)
C: 0.85 – 0.95 %
Mn: 1.8 – 2.1 %
Cr: 0.15 – 0.35 %
V: 0.07 – 0.12 %
Si: up to 0.40 %
P, S: max. 0.03 %
Properties
Good machinability in the annealed condition
High toughness and wear resistance after hardening
Very good dimensional stability during hardening (low distortion)
Hardness after hardening: approx. 62 HRC (at optimal hardening and tempering)
Heat Treatment
Soft annealing: 710 – 740 °C, slow cooling, max. hardness 229 HB
Hardening: 790 – 820 °C, quenching in oil
Tempering: 150 – 200 °C (depending on required hardness), hardness 58 – 62 HRC
Typical Applications
Sheet metal shearing knives
Punches and dies
Cold forming tools
Pressing and bending tools
Gauges and simple measuring tools.
