A286 Alloy 660 (UNS S66286 / DIN 1.4980) round bars

Product Overview

A286 Alloy 660 (UNS S66286 / DIN 1.4980) round bars are manufactured from a precipitation-hardenable austenitic iron-based superalloy designed for applications requiring high strength and good corrosion resistance at elevated temperatures. By utilizing a controlled solution annealing and aging heat treatment, the alloy develops its superior mechanical properties through the precipitation of a fine gamma-prime (γ') phase. Our A286 round bars are ideal for the fabrication of high-temperature fasteners, turbine components, and critical structural parts in aerospace, oil & gas, and industrial gas turbine sectors.

Key Features & Benefits

• Exceptional High-Temperature Strength: Retains high mechanical strength and creep resistance at temperatures up to approximately 700°C (1300°F). It outperforms common stainless steels in stress-rupture applications .

• Precipitation Hardenable: Mechanical properties can be significantly enhanced through a standard aging treatment (typically 720°C for 16 hours), allowing for custom tailoring of strength and ductility .

• Excellent Oxidation Resistance: Provides good resistance to oxidation and scaling in continuous service environments, ensuring longevity and performance stability .

• Cryogenic Toughness: Unlike many high-strength materials, A286 maintains excellent ductility and toughness at cryogenic temperatures (down to -196°C) and remains non-magnetic in the solution-treated condition .

• Good Fabricability: Exhibits good formability and weldability in the solution-annealed condition, allowing for machining and shaping prior to final hardening .

  
  

  
  

  Typical Applications
  Aerospace & Defense: Jet engine components (wheels, blades, casings), afterburner parts, missile hardware, and airframe structural fasteners .

  Power Generation: Gas turbine rotors, blades, shafts, and boiler pressure vessel bolting .

  Oil & Gas: High-strength bolting and fasteners for sour service environments (NACE MR0175 compliant grades available), downhole tools, and valve stems .

  Automotive & Industrial: Turbocharger rotors, exhaust manifold studs, high-temperature springs, and heat-treatment furnace fixtures .

  Cryogenic Equipment: Structural components for LNG applications and superconducting magnet supports .