The materials used for these types of mould are fundamentally four: :
• tempered steel 2311 (40 CrMnMo 7)
• tempered steel 2312 (40 CrMnMo S 8 6)
• tempered steel SB40 (42 CrMo 4)
• annealed 2379 steel (K110)
The first three steels lend themselves to final chrome-plating and polishing after milling and grinding. With K110, however, a total vacuum hardening treatment is performed. Below are some of the moulds we have produced.