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I was wondering if you could kindly provide some info regarding bright annealing of 304 StSt. We have vacuum furnaces here however I require to process these parts within a hydrogen atmosphere and then rapid quench. My question is should I use a full backfill of hydrogen or perform a partial pressure control? Any advice would be greatly appreciated.
For bright annealing of 304 stainless steel (StSt), partial pressure control of hydrogen is often the more practical approach. However, it depends on the specific setup of your furnace and process requirements. For most applications, partial pressure control with hydrogen is recommended, as it provides a balance between cost, safety, and the required surface finish. However, if your process has specific requirements for ultra-high brightness, you could consider increasing the hydrogen concentration, though not necessarily a full backfill.