Inconel 718 Bolts Per ASTM B637

Q: What does it mean for Inconel bolts to be produced per ASTM B637.

A: The specification ASTM B637 is a raw material specification for both hot- and cold-worked precipitation-hardened nickel alloy rod, bar, forgings, and forging stock for high-temperature service. Inconel 718 bolts are one of several age hardened nickel alloys that use this raw material specification. Inconel bolts per ASTM B637 must meet specific mechanical properties including strength, hardness, and stress-rupture requirements.