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我国合金工具钢标准取自GB/T 1 2 99- 2 0 0 0 ,美国合金工具钢标准取自ASTMA681 - 94(Reapproved 1 999) 量具刃具用钢 Cr2 A681 - 94 L3WO7 耐冲击工具用钢 4CrW 2Si:~S15CrW 2S
China’s alloy tool steel standard is taken from GB / T 1 2 99-2000, American alloy tool steel standard is taken from ASTMA681-94 (Reapproved 1 999) Measuring and Cutting Tool Steel Cr2 A681-94 L3WO7 impact-resistant tool steel 4CrW 2Si : ~ S15CrW 2S