... of material of High speed steel, and die steel as requirements. High quality with competitivespecial steel square barsSpecification:Precisely-forged square ... 25.5mm*25.5mmApplication: Be used for making Hss Squrare Tool Bits, brochDelivery Condition: Annealed, After Heat-Treatment, Finished ... mold2. 4Cr5MoSiV (GB), it is similar to H11 (ASTM), 1.2343(DIN), SKD62 (JIS)3. 3Cr2MoW8V (GB), it is similar ...