Deep-dive engineering guides on superalloy fasteners, written by the engineers who make them.
A 120MW gas turbine was shearing Inconel 718 blade retention bolts every 8,000 hours. The fix wasn't a stronger bolt. It was a different alloy.
When a heat-treat furnace drifted 18°C, 4,000 A-286 bolts were quietly under-aged. The customer's incoming hardness check caught it, but only because they checked.
Analysis of 340 returned bolts from 12 customer sites reveals five failure modes account for 97% of high-temperature bolt failures. Forensic breakdown with prevention protocols for stress relaxation, creep rupture, hydrogen embrittlement, galling, and thermal fatigue.
A procurement lesson from a chemical plant expansion: how an incomplete fastener specification cost more in engineering time than the bolts themselves.
A Tier-1 turbocharger supplier was specifying Inconel 718 for all hot-side bolts, until our engineering team showed them they only needed it on 3 of 12 positions.
Get a technical quote for your custom high temp bolts within 24 hours. Our engineers speak your language, so send us your drawing and we'll spec the alloy.