Construction steel exhibiting high fatigue strength

Details Construction steel exhibiting high fatigue strength Construction steel exhibiting high fatigue strength

1979-06-18

1981-07-21

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75125, C22C 3806

Patent

active

042796474

ABSTRACT:
Construction steel exhibiting a high fatigue strength.
The invention relates to construction steels. These steels are essentially characterized by the fact that they comprise, besides iron, at a maximum 1.6% (by weight) of C, 0.3 to 3% (by weight) of Mn and/or Ni, at a maximum 1.8% (by weight) of Si, 0.6 to 4% (by weight) of Cu, at a maximum 3% (by weight) of Mo and/ or Co, 0.02 to 0.4% (by weight) of Nb and/or V, at a maximum 0.006% (by weight) of B, at a maximum 0.4% (by weight) of Z and/or Be, 0.2% (by weight) of Al, 0.005 to 0.2% (by weight) of N, at a minimum 0.0005% (by weight) of Ca, and at a maximum 0.25% (by weight) of Ce and/or Pb, and up to 0.1% sulfur.
These steels exhibit a high fatigue strength and, up to a well defined carbon content (0.3%), a good weldability and are resistant to corrosion in the air.

REFERENCES:
patent: 3809550 (1974-05-01), Giflo et al.
patent: 3926621 (1975-12-01), Asada et al.
patent: 4043807 (1977-08-01), Kirman

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