Use of ductile-working and casting materials together with...

Details Use of ductile-working and casting materials together with... Use of ductile-working and casting materials together with...

C - Chemistry, Metallurgy

22

C

C22C 38/40 (2006.01) B01J 19/02 (2006.01) C01B 17/80 (2006.01) C01B 17/88 (2006.01) C01B 17/90 (2006.01)

Patent

CA 2118830

use of ductile-working and casting materials together with welding filler materials for components exposed to hot, concentrated sulphuric acid or oleum A b s t r a c t In a process wherein an iron-based component is exposed to concentrated sulphuric acid, up to 10 wt.% oleum or both at a temperature of at least 200°C up to the boiling point of the sulphuric acid or the oleum, the improvement wherein said component is formed at least in part of a ductile-working and casting material comprising an austenitic iron-nickel-chromium-silicon alloy of the composition Image and the remainder as iron, together with minimal quantities of unavoidable admixtures including the elements magnesium, aluminum and calcium used for deoxidation.

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