Iron based alloy

Details Iron based alloy Iron based alloy

1982-10-22

1983-11-15

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123R, 75123CB, 75123J, C22C 3806

Patent

active

044153619

ABSTRACT:
An iron based alloy comprises between 6 and 20% by weight niobium and between 5 and 10% by weight aluminium, the balance being iron and incidental impurities. Preferably the alloy comprises between 7 and 17% by weight niobium and suitably between 5 and 6% by weight aluminium.
The alloy is suitable as a component in a coal gasifier eg. as a gas inlet or outlet tube or as a structural support member because of its high resistance to corrosive attack by sulphur-bearing gas such as hydrogen sulphide.
Typical alloy compositions comprise 7.6% niobium, 5.3% aluminium, balance iron and incidental impurities and 16.6% niobium, 5.0% aluminium balance iron and incidental impurities.

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