What are the structural characteristics of NS 332 alloy?

 　　In order to improve the resistance of alloys to intergranular corrosion after welding. C ≤ 0.02% and Si ≤ 0.05% are allowed. The microstructure of this alloy in hot working state is austenite, and there are a lot of M6C type carbides on its matrix. When heated to 900 ℃, there is σ Phase precipitation occurs mostly along the austenite grain boundaries and there are also Ni ₂ Mo type intermetallic phases. After solid solution treatment above 1100 ℃, σ All phases are dissolved, but M6C is still difficult to completely dissolve until 1200 ℃.



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National Standard Properties of 304 Stainless Steel Plate

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