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"SNCM420H" is a nickel-chromium-molybdenum steel for case hardening, similar to "SNCM220H," with a tensile strength generally above 980. The amounts of Ni, Cr, and Mo added are average compared to other SNCM materials with specifications. Main applications include large gears and roller bearings. 【Features】 ■ Nickel-chromium-molybdenum steel for case hardening ■ Tensile strength generally above 980 ■ Average amounts of added Ni, Cr, and Mo ■ Stock dimensions φ13 to φ400 (some sizes may not be in stock) *For more details, please refer to the catalog or feel free to contact us.
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basic information
【Mechanical Properties (Reference Values)】 ■ Heat Treatment - Quenching: Primary 850–900 Oil cooling, Secondary 770–820 Oil cooling - Tempering: 150–200 Air cooling ■ Tensile Test (Type 4 Specimen) - Yield Point: - - Tensile Strength: 980 N/mm² or more - Elongation: 15% or more - Reduction of Area: 40% or more ■ Impact Test - Charpy Impact Value: 69 J/cm² or more ■ Hardness Test - Hardness: 293–375 HBW *For more details, please refer to the catalog or feel free to contact us.
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Applications/Examples of results
【Applications】 ■ Large gears ■ Roller bearings, etc. *For more details, please refer to the catalog or feel free to contact us.
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Company information
Hotta Hagane Co., Ltd. is a company that sells and processes special steel and stainless steel in general. We collaborate with processing factories that have skilled techniques in forging, heat treatment, drawing, and peeling of special steel, and we propose and respond to our customers' advanced requests. Please feel free to contact us.