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AssigneeFukuda Metal Foil & Powder Co., Ltd.
InventorsKensuke Hidaka, Kanichi Tanaka, Yoshio Kohira, Hideshi Yamaguchi, Yoshinao Suzuki, Masahiro Nakagawa, Yoshio Fuwa, Kazuhiko Mori, Yoshihiko Ito, Atsushi Taguchi
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A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, 1.5 to 15.0% by weight of tungsten and/or 1.0 to 6.5% by weight of molybdenum, the balance being more than 40.0% by weight of chromium, and the maximum sum of tungsten and molybdenum being 15.0% by weight. The alloy may also contain one or more of iron, cobalt, carbon, boron, aluminum, silicon, niobium and titanium. When the alloy is used in powder form as a material for hard facing by welding, the alloy may further contain 0.01 to 0.12% by weight of aluminum, yttrium, misch metal, titanium, zirconium and hafnium. 0.01 to 0.1% by weight of oxygen may also be added to the alloy. The alloy has a high degree of toughness, wear resistance and corrosion resistance. The alloy can be used as a hard facing material to be applied to various objects, such as automobile engine valves.
A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, at least one member selected from the group consisting of 1.5 to 15.0% by weight of tungsten and 1.0 to less than 6.5% by weight of molybdenum, one or more of 15.0 or less % by weight of iron and 10.0 or less % by weight of cobalt, at least one member selected from the group consisting of 0.3 to 2.0% by weight of carbon, 0.1 to 1.5% by weight of boron and 0.1 to 1.5% by weight of silicon, 0.5 to 2.5% by weight of aluminum, the balance comprising 40.0 or more % by weight of chromium and unavoidable impurities, the maximum sum of tungsten and molybdenum being less than 15.0% by weight, the maximum sum of iron and cobalt being 20% by weight, the and the weight ratio of chromium to nickel being at least 1.
A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, at least one member selected from the group consisting of 1.5 to 15.0% by weight of tungsten and 1.0 to less than 6.5% by weight of molybdenum, at least one member selected from the group consisting of 0.3 to 2.0% by weight of carbon, 0.1 to 1.5% by weight of boron and 0.1 to 1.5% by weight of silicon, 0.5 to 2.5% by weight of titanium, 0.01 to 0.12% by weight of one or more of aluminum, yttrium, misch metal, zirconium and hafnium, the balance comprising 40.0 or more % by weight of chromium and unavoidable impurities, the maximum sum of tungsten and molybdenum being less than 15.0% by weight, and the weight ratio of chromium to nickel being at least 1.
A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, at least one member selected from the group consisting of 1.5 to 15.0% by weight of tungsten and 1.0 to less than 6.5% by weight of molybdenum, at least one member selected from the group consisting of 0.3 to 2.0% by weight of carbon, 0.1 to 1.5% by weight of boron and 0.1 to 1.5% by weight of silicon, 0.5 to 2.5% by weight of titanium, 0.01 to 0.12% by weight of one or more of yttrium, misch metal, zirconium and hafnium, the balance comprising 40.0 or more % by weight of chromium and unavoidable impurities, the maximum sum of tungsten and molybdenum being less than 15.0% by weight, and the weight ratio of chromium to nickel being at least 1.
A hard facing chromium-base alloy consisting essentially of 30.0 to 48.0% by weight of nickel, at least one member selected from the group consisting of 1.5 to 15.0% by weight of tungsten and 1.0 to less than 6.5% by weight of molybdenum, at least one member selected from the group consisting of 0.3 to 2.0% by weight of carbon, 0.1 to 1.5% by weight of boron and 0.1 to 1.5% by weight of silicon, 1.0 to 4.0% by weight of niobium, 0.5 to 2.5% by weight of titanium, 0.01 to 0.12% by weight of one or more of aluminum, yttrium, misch metal, zirconium and hafnium, the balance comprising 40.0 or more % by weight of chromium and unavoidable impurities, the maximum sum of tungsten and molybdenum being less than 15.0% by weight, the maximum sum of niobium and titanium being 5.0% by weight, and the weight ratio of chromium to nickel being at least 1.
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