Steel for machine structural use excellent in fracture splitabil

Details Steel for machine structural use excellent in fracture splitabil Steel for machine structural use excellent in fracture splitabil

1999-04-30

2000-11-07

Yee, Deborah

Alloys or metallic compositions

Ferrous

Over 0.05 percent sulfur, over 0.04 percent phosphorus or...

420 84, 420127, C22C 3860, C22C 3812, C22C 3814

Patent

active

061432423

ABSTRACT:
A steel for machine structural use which realizes excellent fracture splitability and fatigue strength in its as-hot forged formed articles, and which comprises, based on weight, 0.2 to less than 0.35% of C, 0.1 to 1.1% of Si, 0.1 to less than 0.3% of Mn, 0.01 to 0.2% of P, 0.01 to 0.2% of S, greater than 0.2 to 0.5% of V, 0.01 to 0.1% of Ti, 0.005 to 0.02% of N and the balance of Fe and unavoidable impurities. The steel further comprises, if necessary, one or at least two of the following elements in the following amount or amounts: 0.005 to 0.05% of Al and/or 0.05 to 0.5% of Nb, 0.1 to 0.5% of Cr and 0.1 to 0.5% of Mo.

REFERENCES:
patent: 5922145 (1999-07-01), Watari et al.

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