During the latter part of 1967, a research and development program related to two-phase stainless steels was initiated at Cameron Iron Works, Inc. The primary purpose was to establish a chemistry range and a forging procedure which would permit Cameron to supply a two-phase alloy in the form of wrought products. Typically two-phase alloys have been available only in the form of castings. A slight chemistry variation from the standard austenitic stainless steel compositions produces the duplex alloy rather than a single-phase material. These duplex alloys, however, present some unusual forging problems when an attempt is made to produce wrought products from cast ingots.

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