STEEL FOR MACHINE STRUCTURE AND ITS PRODUCTION

PROBLEM TO BE SOLVED: To produce a steel for a machine structure excellent in delayed fracture resistance, utterly free from the generation of delayed fracture in a certain period and having >=160kgf/mm tensile strength. SOLUTION: (1)This steel for a machine structure has a compsn. contg., by wei...

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Bibliographische Detailangaben
Hauptverfasser:	KUSHIDA TAKAHIRO, KURATOMI NAOYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To produce a steel for a machine structure excellent in delayed fracture resistance, utterly free from the generation of delayed fracture in a certain period and having >=160kgf/mm tensile strength. SOLUTION: (1)This steel for a machine structure has a compsn. contg., by weight, 0.3 to 0.6% C, 0.5 to 2% Si, 0.1 to 1% Cu, 0.1 to 1.5% Cr, 0.05 to 1% W, 0.001 to 0.01% Al, 0.005 to 0.2% Nb, 0.05 to 0.5% Ni, 0.01 to 0.3% V, 0 to 0.5% Mn,