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Austenitic SS 660

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Austenitic SS 660

AISI No. 660 is a heat-resistant iron-chromium-nickel alloy recommended for applications requiring high strength and good resistance to corrosion at temperatures up to 1300 F and for lower stresses at higher temperatures. This age-hardenable stainless steel has high resistance to oxidation in continuous service to 1500 F and in intermittent service to 1800 F. Its many high-temperature applications include jet-engine turbine wheels and blades, bolting and afterburner parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-382. Producer or source: Stainless steel mills.

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Description

Alloy 660 is a precipitation hardening austenitic stainless steel known for its impressive strength at high temperatures up to 700°C. Also sold under the names, UNS S66286, and A-286 alloy, Alloy 660 gains its strength from a high degree of uniformity. It has an impressive yield strength minimum of 105,000 psi and is commonly used in high temperature fastening and bolting materials. Other applications for Alloy 660 include:

  • Jet engines
  • Gas turbines
  • Turbo charger components

In order to be considered a member of the Alloy 660 family, an alloy’s chemical composition must include:

  • 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

One thing to note about Alloy 600’s chemical composition is that due to its high nickel content for a stainless steel, it often categorized as a nickel alloy, thus the A-286 label.

Continental Steel is proud to be a distributor of Alloy 660 in a range of shapes and sizes including coil, sheet, and plate.  The Alloy 600 metals that we supply, meets NAS, UNS, JIS, and ASTM (A453, A638) specifications and standards

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