High toughness steel

Details High toughness steel High toughness steel

1987-07-27

1989-06-27

Yee, Deborah

Alloys or metallic compositions

Ferrous

Lead, bismuth, selenium, tellurium or calcium containing

420 93, 420109, 420110, 420119, 420125, 420126, 420104, C22C 3814, C22C 3828, C22C 3850

Patent

active

048428167

ABSTRACT:
A steel composition particularly suitable for the manufacture of electric resistance welded pipes for use in most hostile environments and able to display excellent sour resistance and high toughness. The aluminum content of the steel composition is reduced to not more than 0.005%, while from 0.006 to 0.2% in total of one or both of titanium and zirconium is used instead for steel containing 0.0005 to 0.008% Ca. The steel, apart from iron and unavoidable impurities further contains:

REFERENCES:
patent: 4388123 (1983-06-01), Murayama
patent: 4406711 (1983-09-01), Nagumo et al.
patent: 4472208 (1984-09-01), Kunishige
patent: 4570708 (1986-02-01), Tiberg

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