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Is the Passivation of SST Hex Screws/Bolts per ASME SA-193 Standard?
- Thread starter beh188
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Yes, it is typical for stainless steel fasteners to be passivated. You are correct that neither ASTM A962 nor ASTM A193 specify this as a requirement. It is up to the end user to specify the appropriate surface treatment based on the end use, environmental conditions, etc.
Question
Does a Stainless Steel fastener thats been passivated, have the same chance that when torque is applied that threads end up 'galling' or does the passivate help in preventing that.
If so which surface treatment is the best at reducing this 'galling' affect?
Does a Stainless Steel fastener thats been passivated, have the same chance that when torque is applied that threads end up 'galling' or does the passivate help in preventing that.
If so which surface treatment is the best at reducing this 'galling' affect?
Steve Jones
Materials & Corrosion Engineer
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