How to Anneal Austenitic Stainless Steel
Austenitic stainless steel is a class of high-alloy steels with a very particular chemical composition. These steels are corrosion-resistant and have excellent wear resistance and strength. Unlike other high-alloy steels, austenitic steels do not respond to traditional heat treatment or hardening. However, they are very receptive to work hardening, which produces grains within the crystalline structure of the steel that are only removed through a process known as annealing, which "resets" the steel back to a homogeneous composition. Does this Spark an idea?
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Instructions
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Resetting the Steel
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1
Clean the surface of the steel using sandpaper to remove all dirt and oil residue.
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2
Place the steel in a forge and bring the temperature of the steel to above 1,900 degrees Fahrenheit.
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3
Keep the steel at that temperature for at least 10 minutes to ensure an even heat.
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4
Remove the steel from the oven and use a fan or water to rapidly cool the steel to below 1,100 degrees.
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5
Cool the steel to room temperature by allowing it to sit at room temperature and continue cooling.
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1
Tips & Warnings
The steel must be cooled rapidly to prevent carbides from forming. Depending on the carbon content and alloy of the steel, water quenching may be too drastic and result in cracking. In this circumstance, use moving air from a fan to cool the steel.
Proper safety equipment must be used to prevent serious injuries, including burns.
References
Resources
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