50HRC型高硬度プリハードン冷間工具鋼CX1

概要

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In these days, users demands in die and mold production has been drastically diversified. Daido Steel has newly developed 50HRC type pre-hardened cold work tool steel, CX1, in accordance with the strong demands for shorter delivery times and cost cutting. CX1 shows higher hardness than conventional pre-hardened steels with 40HRC, which is realized by alloy and microstructure designing. CX1 is directly finish machined after rough machining without heat treatment, which results in shorter delivery times. Distortion free quality contributes to the shortening of finish process time, especially. CX1 exhibits the same mechanical properties as those of other cold work tool steels of the same hardness and shows almost the same face and end-milling machinabilities as conventional pre-hardened grades. Although there are some difficulties in drilling and tapping due to high hardness, the selection of tool and cutting conditions make machining efficiency to mass production level. This grade has just been practically used for cold work dies and tooling parts and it is expected to expand to wide variety applications.