Ferrite steel which excels in high-temperature strength and toug

Details Ferrite steel which excels in high-temperature strength and toug Ferrite steel which excels in high-temperature strength and toug

1993-08-13

1994-09-27

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 70, C22C 3826, C22C 3830

Patent

active

053505590

ABSTRACT:
A ferrite steel suitable for use as the material of a part which is used at high and which is required to have high toughness at weld heat affected zones. The ferrite steel has a composition which contains C: not more than 0.02 wt %, Si: not more than 2.0 wt %, Mn: not more than 1.0 wt %, Cr: not less than 6.0 wt % but not more than 23.0 wt %, Ni: not more than 1.0 wt %, Nb: not less than 0.4 wt % but not more than 0.65 wt %, Co: not less than 0.01 wt % but not more than 2.0 wt %, Al: not more than 0.5 wt %, N: not more than 0.03 wt % and the balance substantially Fe and incidental inclusions.

REFERENCES:
patent: 3499802 (1970-03-01), Lagneborg

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