Duplex ferritic-martensitic stainless steel

Details Duplex ferritic-martensitic stainless steel Duplex ferritic-martensitic stainless steel

1976-03-29

1977-10-18

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75126D, 75126F, 148 37, C22C 3826, C22C 3828, C22C 3838

Patent

active

040544486

ABSTRACT:
A ferritic-martensitic duplex stainless steel having properties between those of ferritic and martensitic stainless steels. The steel consists essentially of, by weight, from 4.5 to 20.5% chromium, from 1.5 to 10.5% manganese, from 0.005 to 0.1% carbon, from 0.1 to 1.0% of an element from the group consisting of titanium and columbium, balance essentially iron. The steel is additionally characterized by chromium and manganese contents within Area ABCD of the Figure, and by a chromium equivalency of from 5.0 to 11.0, in accordance with the following equation:

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patent: 3861908 (1975-01-01), Bressanetti
patent: 3926685 (1975-12-01), Gueussier

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