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- W4230051405 abstract "The authors have already reported the steel composition of a new ultra-high strength steel. The steel composition (0.2C-10Ni-3.5Cr-3.5Mo-4Co-0.4Al-0.6V) of this new ultrahigh strength steel has been optimized by means of Box-Wilson Method using “hardness” and “Charpy impact value”. In this report, the strength-toughness combination was investigated from different angles besides hardness-impact value combination, and other properties were studied with the said commercially produced new steel, and following results were obtained:(1) New ultra-high strength steel (0.2C-10Ni steel) has good combination of strength and toughness i.e., total elongation, reduction of area, notch tension and plane strain fracture toughness vs. ultimate tensile strength combinations are comparable to those of 18% Ni maraging steel at UTS 190kg/mm2 (270ksi).(2) Yield ratio of 0.2C-10Ni steel is lower than that of 18% Ni maraging steel, so toughness-yield strength combination is not so good as 18% Ni maraging steel.(3) Heat-check cracking property, oxidation gain and erosion property in molten aluminum are superior to hot work die steels, and in some cases, to 18% Ni maraging steel.(4) 0.2C-10Ni steel has good toughness-ultimate tensile strength combination as 18% Ni maraging steel and less expensive than 18% Ni maraging steel, so this new steel can be applied for structural parts which need high strength and toughness, and tools e.g., cold forging tools, hot extrusion tools and die casting tools." @default.
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- W4230051405 date "1975-01-01" @default.
- W4230051405 modified "2023-10-14" @default.
- W4230051405 doi "https://doi.org/10.4262/denkiseiko.46.69" @default.
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