Resources

Technical Resources

Engineer-to-engineer selection guides, validated data tables, and practical tools for specifying high-temperature superalloy fasteners.

These technical resources are drawn from our in-house metallurgy lab, VIM+VAR melting data, and two decades of fastener manufacturing experience. Each guide is maintained by our engineering team and updated as new heat data becomes available. For questions not covered here, our metallurgists respond within one business day.

Bolt Selection Guide

Temperature, environment, load, standard, worked into a grade recommendation in four steps.

high temperature bolt material selectionhow to choose superalloy fastenersbolt selection guide high temperature
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Torque Chart

Tightening torque for M6 to M100, by grade, thread class, lubrication condition and temperature.

superalloy bolt torque chartInconel 718 torque specificationshigh temperature bolt tightening torque
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Temperature-Strength Curves

Tensile and yield retention from 20 degC to 815 degC across all six grades.

high temperature bolt strength vs temperaturesuperalloy tensile strength at elevated temperatureInconel 718 strength curve
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Corrosion Data

PREN, crevice thresholds, SCC susceptibility and galvanic pairings, grade by grade.

superalloy corrosion resistance datanickel alloy bolt corrosion chartPREN values nickel fasteners
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Standards Comparison

ASTM, AMS, DIN, EN, GB and JIS cross-reference, plus the EN 10204 certificate grades.

ASTM B637 equivalentAMS 5662 DIN cross referencesuperalloy fastener standards comparison
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Engineering FAQ

The thirty questions engineers ask before specifying a high-temperature fastener.

high temperature bolt FAQsuperalloy fastener questionsInconel 718 vs A-286 bolts
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Need custom high temp bolts? Let's talk.

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.

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