Alloys or metallic compositions – Containing over 50 per cent metal but no base metal – Iron containing
Patent
1993-11-05
1995-01-03
Yee, Deborah
Alloys or metallic compositions
Containing over 50 per cent metal but no base metal
Iron containing
420586, 148909, C22C 3000
Patent
active
053784278
ABSTRACT:
A corrosion-resistant austenitic alloy suitable for use in heat transfer tubes for heat-recovery boilers which withstands uniform corrosion, intergranular corrosion, and stress corrosion cracking in refuse-fired boilers and black-liquor combustion boilers. The alloy consists essentially, on a weight basis, of C: not more than 0.05%, Si: not more than 4%, Mn: not more than 7.5%, Ni: 25-55%, Cr: more than 20% and not more than 35%, Mo: an amount satisfying the following inequality (1) when Mn(%).ltoreq.2.5 or inequality (2) when 2.5.ltoreq.Mn(%).ltoreq.7.5,
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Kudo Takeo
Otsuka Nobuo
Sumitomo Metal Industries Ltd.
Yee Deborah
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