A nickel-chromium-cobalt-molybdenum grade, Alloy 617 combines exceptional strength and oxidation resistance at high temperature.

The combination of metallurgical stability, strength and oxidation resistance makes Alloy 617 an excellent choice for high temperature applications.

  • UNS Number: N06617
  • Werkstoff Number: 2.4663
  • ASTM: B166, B168, B546, B564, 5888, 5889
  • AMS: 5887

Chemical analysis



  • Combustion cans and ducting for gas turbines
  • Transition liners for gas turbines
  • Casing for industrial gas turbines
  • Industrial furnace components
  • Nitric acid catalyst grids

About Alloy 617

Alloy 617 is a nickel-chromium-cobalt-molybdenum alloy with an exceptional combination of high-temperature strength and oxidation resistance.

In addition to high temperature applications in the aerospace and power generation markets, the alloy is also used in high temperature petrochemical plants for applications such as nitric acid catalyst grids where metallurgical stability is critical.

For more information on alloy 617, or to receive a quotation please contact us today!

  • Density: 8.36 g/cm³
  • Melting Range: 1332-1380 °C
  • Hardness: 172 HRB
  • Specific Heat Capacity: 419 J/kg.°C
  • Electrical Resistivity: 1.22 µΩ.m
  • Poisson's Ratio: 0.3

Mechanical & Physical Properties

Mechanical & Physical Properties21.1°C93.3°C148.9°C204.4°C315.6°C371.1°C426.7°C537.8°C595°C648.9°C760°C870°C982°C1093°C
Ultimate Tensile Strength /MPa734706669647628625624595-570--496-
0.2% Yield Strength /MPa322301276258250248244246-260--109-
Reduction of area %5650------------
Elongation %6260595961626363-60--72-
Minimum Creep 0.0001% per hr--------344.73275.799027.5812.45.51
10,000 hr Rupture Strength--------344.73275.79120.6539.3615.75.51
Coefficient of Thermal Expansion /µm/m°C-11.611.612.613.113.613.613.9-14--16.3-
Thermal Conductivity /kcal/(hr.m.°C)11.52412.64212.64214.01815.2216.59816.59817.974-19.35--24.682-
Modulus of Elasticity / GPa211206206201194188188181-173--129-
Proud members of the British Valve & Actuator AssociationProud members of the British Valve & Actuator Association