PLASTIC MOULD STEEL PLASTIC MOLD STEEL-(Grade 1.2738,P20+Ni,AISI P20+Ni) PLASTIC MOULD STEEL PLASTIC MOLD STEEL-1.2311 Grade. PLASTIC MOULD STEEL 1.2316 PLASTIC MOULD STEEL 1.2316 PLASTIC MOULD STEEL A2 STEEL/ PLASTIC MOULD STEEL/ AIR-HARDENING, MEDIUM-ALLOY, COLD-WORK STEELS: A2 STEEL/ PLASTIC MOULD STEEL/ AIR-HARDENING, MEDIUM-ALLOY, COLD-WORK STEELS: STAVAX ESR/ 1.2083/ AISI 420 STEEL STAVAX ESR/ 1.2083/ AISI 420 STEEL