Steel materials having an excellent hydrogen induced cracking re

Details Steel materials having an excellent hydrogen induced cracking re Steel materials having an excellent hydrogen induced cracking re

1977-12-23

1979-05-08

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123R, 75123E, 75125, 75126G, 75128E, C22C 3806

Patent

active

041534549

ABSTRACT:
Steel materials having an excellent hydrogen induced cracking resistance when used under atmosphere containing H.sub.2 S, which contain 0.05 to 0.20% of C, 0.01 to 0.50% of Si, 0.60 to 2.00% of Mn, 0.01 to 0.10% of Al, less than 0.0020% of S, Ca of 0.0020% to less than 0.0050%. These steel materials are increased in the tensile strength by additionally containing at least one of Cu, Ni, Cr, B, Mo, Nb, V, Zr and Ti. Furthermore the effect of addition of Ca is stabilized by adding rare-earth elements.

REFERENCES:
patent: 3630723 (1971-12-01), Asada
patent: 3634074 (1972-11-01), Ito et al.
patent: 3652267 (1972-03-01), Ito et al.
patent: 3861906 (1975-01-01), Tipnis et al.
patent: 4042381 (1977-08-01), Thomas et al.
patent: 4043807 (1977-08-01), Kirman
patent: 4091147 (1978-05-01), Kanazawa et al.

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