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Rock Climbing Photo: These 316L Stainless anchor bolts, from from Long ...
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By Martin Roberts
Sep 24, 2015
I hear a lot of talk about Thailand and Cayman Brac being a worst-case scenario for bolt corrosion but it's just not true.
I considered the Collinox bolts to likely be the finest stainless steel bolts on the market mostly due to the one-piece, hot forged design - in an SCC sense, compressive stresses are less likely to fail than tensile stresses. These bolts simultaneously failed in 9 years under bodyweight and saw very little action in the form of falls.
Right now the Taiwanese are systematically pull testing absolutely every bolt. Some fail and some do not.
They have started installing Titanium and guess what? None show any sort of corrosion at all, just like every other Titanium climbing bolt on the planet!
By Nate Ball
From: Portland, OR
Jan 5, 2016
Certified truth.
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These 316L Stainless anchor bolts, from from Long Dong Wall in Taiwan, a sandstone sea-cliff, have never held a lead fall and broke while toproping. This is a classic example of Stress Corrosion Cracking (SCC).

Submitted By: John Byrnes on Aug 17, 2015
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