Alloy 625 Fasteners

Alloy 625 combines heat resistance, corrosion resistance and strength. Alloy 625 fasteners are used in environments from cryogenic to 1800º F (1000º C). Resistance to oxidation is a primary characteristic. Like Alloy C276, Alloy 625 is a nickel-chrome-molybdenum alloy. The addition of niobium creates a stronger material. Common applications are in marine environments and pollution control equipment. Navratna stocks hex bolts, hex nuts, washers and threaded rod in Alloy 625. The diameter range is principally from 1/2" to 3/4″.

Inconel Alloy 625 (® Special Metals)
Haynes 625 (® Haynes International)
Nickelvac 625 (® Allegheny Technologies)

Primary Resistance

ASTM B443, ASME SB443 (Plate)
ASTM B446, ASME SB446 (Bar)
W-Nr 2.4865
UNS N06625

Typical Tensile Strength (at room temperature in KSI)

Typical Chemistry (% by weight)
Al .2, C .05, Co .5, Cr 21.5, Fe 2.5, Mn .25, Mo 9, Nb 3.5, Ni 61, P .01, Si .25, S .01, Ti.2