Exterior protective member made of austenitic stainless steel fo

Details Exterior protective member made of austenitic stainless steel fo Exterior protective member made of austenitic stainless steel fo

1987-08-10

1989-02-28

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420584, 420586, C22C 3850

Patent

active

048083712

ABSTRACT:
Particularly important properties required for exterior protective members for sheathing heaters are resistance to oxidation, anti-stress corrosion properties and weldability. An austenitic stainless steel for the exterior protective members has been developed from the findings that, firstly, the resistance to oxidation can be remarkably improved by increasing the Cr content together with a combined addition of Al and rare earth metals. Secondly, a small amount of Co addition is effective to enhance alloy ability to withstand stress corrosion cracking in the environment to which sheathing heaters are subjected, and that the weldability of such members can be made superior by maintaining the content of Si and Ti within a specified region.

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