The processing of plastics which contain chemically aggressive or abrasive fi llers demands hardenable, corrosion-resistant steels. This reduces the mould maintenance necessary in comparison to steels which are less corrosion resistant. Hardenable steels: Steels which are delivered in the soft annealed condition and usually hardened to over 50 HRc after machining.
Powder metallurgical steels
Special materials subjected to vacuum refining or melting during at least one stage of manufacture.
Kunststoffformenstähle in ESU-Güte
Special property and/or achievement characteristics