Stainless Steel Alloy 660

Alloy 660 is an austenitic precipitation-hardening stainless steel renowned for its outstanding strength at temperatures up to 700°C. Alloy 660, also known as UNS S66286 and A-286 alloy, derives its strength from its high degree of homogeneity. It has a minimum yield strength of 105,000 psi and is often utilized in materials for high-temperature fastening and bolting. Additional uses for alloy 660 include:

Jet engines

Gas turbines

Components of a turbocharger

For an alloy to be regarded a member of the Alloy 660 family, the following elements must be present in its chemical composition:

Ni 24-27.0%

Cr 13.50-16.0%

Ti 1.90-2.35%

Mn 2.0% max

Mo 1-1.5%

Si 1.0% max

V 0.10-0.50%

Al 0.35% max

Notable about the chemical composition of Alloy 600 is that, due to its high nickel content for a stainless steel, it is frequently classified as a nickel alloy, hence the A-286 designation.

Sino Special Metal is pleased to distribute Alloy 660 in a variety of forms, including as coil, sheet, and plate. Our Alloy 600 metals conform to NAS, UNS, JIS, and ASTM (A453, A638) standards and specifications.