STEEL FOR MECHANICAL STRUCTURES HAVING EXCELLENT GRAIN SIZE PROPERTIES
To provide a steel for mechanical structures that can inhibit the coarsening of crystal grains during carburization.SOLUTION: A steel for mechanical structures having excellent grain size properties comprises, in mass%, C: 0.27-0.45%, Si: 0.1-0.9%, Mn: 0.1-0.6%, P (as unavoidable impurities): 0.030%...
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