Friday, June 29, 2012

Alternatives to standard 316 stainless steel fasteners

So you need an alternative to standard stainless steel fasteners.  You have choices of many exotics and semi exotic materials.  Of course if money wasn't an issue you can go with a very exotic material and have most of your problems solved, but the question is alway "What do I need to get the job done?" and "Will this product fullfill my specifications or is it overkill?"

Below, I give you a few choices and of course will point out BUMAX as the in between a supper alloy and standard 316.  www.bumax.us 

Note: this is a limited list and yes I could mention 20 other materials,but pricing will not be satisfactory on the exotics.  So I list a few and hopefully this will assist you with the start of finding something other than standard 316 stainless steel fasteners.


Grade Why it might be chosen instead of  standard 316?
Bumax A4-316L 2x Tensile strength 150ksi, 2x corrosion resistance, up to 60% less expensive than exotics
316Ti Better resistance to temperatures of around 600-900°C is needed.
316N Higher strength than standard 316.
317L Higher resistance to chlorides than 316L, but with similar resistance to stress corrosion cracking.
904L Much higher resistance to chlorides at elevated temperatures, with good formability
2205 Much higher resistance to chlorides at elevated temperatures, and higher strength than 316



 If you need assitance, my staff will be happy to assist you.  Contact me at chris.portelli@bufab.com  We are manufactures of all types of fasteners and are happy to point you in the right direction.














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