Surface hardening on Stainless Steel Fasteners
Surface hardening on Stainless Steel Fasteners
(OP)
I am making stainless fasteners with XM-7 or 304HQ stainless but need higher strength and hardness. Has anyone had any experience using the SAT12 hardening process on fasteners or some equivalent process ?





RE: Surface hardening on Stainless Steel Fasteners
You will improve the surface hardness but will not gain very much if overall tensile strength using the SAT 12.
There are several approaches to getting a higher strength fastener. First would be to roll the the threads if the fastener is under 1.25". The next would be to use a higher strength material with similar corrosion resistance.
What are your sizes?
RE: Surface hardening on Stainless Steel Fasteners
RE: Surface hardening on Stainless Steel Fasteners
couple of sizes, the Shank is 4mm or 6mm, they are thread rolled already.
It would be nice to get increased surface hardness and some strength too.
Already pre-drawing the material to increase strength, but need more without loss of corrosion resistance.
Kind of between a rock and a hard place, as usual.
RE: Surface hardening on Stainless Steel Fasteners
What load are you after per bolt and what standard are you using for load capacity?
RE: Surface hardening on Stainless Steel Fasteners
RE: Surface hardening on Stainless Steel Fasteners
http://www.bufab-stainless.se/eng/index.htm
RE: Surface hardening on Stainless Steel Fasteners
Bumax 109 and Bumax 120 look interesting, but so far have not found out what actual materials or processing they use...seems proprietary.
RE: Surface hardening on Stainless Steel Fasteners
RE: Surface hardening on Stainless Steel Fasteners
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