Forged blocks, tempered to 950-1100 N/mm2
510 | 610 | 710 | 810 | 910 | 1010 | 1110 | 1210 | ||
510 | X | X | X | X | X | X | X | X | |
Use:
Large-scale plastic injection molds and mold bases
Molds for automotive parts, containers, crates
Molds requiring a combination of toughness, dimensional stability and good machinability
Machine parts requiring strength and machinability without further hardening . Uses:
Large-scale plastic injection molds and mold bases
Molds for automotive parts, containers, crates
Molds requiring a combination of toughness, dimensional stability and good machinability
Machine parts requiring strength and machinability without further hardening
Heat treatment:
It is not refined as standard – it is used in the delivered condition
Annealing: approx. 550–600 °C (after heavy machining)
Possibility of nitriding, PVD or CVD coatings to increase surface hardness
Hardening is not recommended – may cause deformation in large volumes
Features:
Supplied in pre-hardened condition (~30–34 HRC)
Better hardenability and hardness even in large cross-sections due to nickel content
Good toughness and dimensional stability
Excellent machinability in the as-delivered condition
Polishable – suitable for molds with high-quality surface requirements
Nitriding or coating option to increase surface resistance
DIN 1.2738 is an alloyed tool steel based on 1.2311 (P20), enriched with nickel, which ensures better hardenability and higher toughness even for large-volume parts. The steel is supplied in a pre-hardened state (~280–320 HB / approx. 30–34 HRC), has good machinability and is suitable for large-sized plastic molds, including structural and automotive parts.
Alternative designation: 40CrMnNiMo864.6
Type: Pre-hardened tool steel for molds