Pre-hardened corrosion resistant steels

The processing of plastics which contain chemically aggressive or abrasive fillers demands hardenable, corrosion-resistant steels. This reduces the mould maintenance necessary in comparison to steels which are less corrosion resistant.

Pre-hardened steels: Steels which are supplied and used in the heattreated condition. The hardness of approx. 30 HRc (similar to the non-corrosion-resistant hardenable steels) is an optimum compromise between machinability and wear resistance / compressive strength. In special cases, a higher working hardness may be used.

Powder metallurgical steels

Special materials subjected to vacuum refining or melting during at least one stage of manufacture.

Plastic mould steels in ESR quality

Special property and/or achievement characteristics

Selection of product shape