1.2311/P-20

A common pre-hardened steel used for plastic injection molds is 1.2311/P-20 (Plastic Mould Steel). It provides good toughness and dimensional stability together with outstanding machinability, polishability, and wear resistance. It is resistant to deformation during molding and comes in a hardness range of 28–32 HRC. P-20 guarantees long service life, accurate tolerances, and consistent surface finish in high-volume manufacturing, making it perfect for injection molds, die casting dies, and tool components.

Key Features

• Pre‑Hardened Steel (28–32 HRC) – Ready for machining without additional hardening.
• Excellent Machinability – Easy to cut, shape, and drill for mold components.
• High Polishability – Produces smooth surfaces for injection-molded plastics.
• Dimensional Stability – Maintains shape and tolerances during production.