Stainless steel model：1.4429
It has characteristics similar to 1.4435, but is stronger due to its high nitrogen content. This also stabilizes the austenite structure, thus minimizing delta ferrite formation and thus reducing magnetization. Ideal for vacuum applications. For CF flanges, especially when vacuum annealed for cleaning and demagnetization occurs at high temperatures. 1.4429 has low availability in pipe and sheet metal. Therefore, flanges made of 1.4429 for Chambers and components are usually combined with semi-finished products made of 1.4404 or 1.4307.
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