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Alloy 105

Precipitation-hardenable nickel-cobalt-chromium grade, Alloy 105 is ideal for high temperature service.

With the addition of molybdenum for solid-solution strengthening, Alloy 105 offers superior strength and heat resistance. The alloy has high creep-rupture properties at temperature up to 950°C.


Product form Size range from Size range to
Alloy 105 round bar 12.7 mm 203.2 mm

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Chemical Analysis

% Ni Co Cr Mo Mn Cu Si C S P
Min - 18 14 4.50 - - - - - -
Max Balance 22 15.7 5.50 1 0.20 0.1 0.17 0.01 -


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Perfect for applications in the Power Generation industry

Alloy 105 can be used in a variety of applications including:

  • Turbine blades
  • Turbine discs
  • Turbine shafts
  • Forgings
  • Rolled rings
  • Bolts and fasteners

About Alloy 105

Alloy 105 has excellent heat resistant properties, high strength and excellent oxidation resistance. The high creep-rupture properties of Alloy 105 makes the alloy perfect for critical gas turbine applications.

Alloy 105 can be heat treated as followed;

For optimum long term creep and ductility at 850-950°C:
4 hours at 1150°C, 16 hours at 1050-1065 °C and 16 hours at 850°C with air cooling after all heat treatment operations.

Where tensile strength, elongation and impact stength are more critical at temperature up to 700°C:
4 hours at 1125°C and 16 hours at 850°C with air cooling after all heat treatment operations.


8 g/cm³
Melting range:
Liquidus 1345°C & Solidus 1290°C
Specific Heat Capacity:
419 J/kg.°C
Electrical Resistivity:
1.31 µΩ.m


Werkstoff Number:
ASTM B637, MSRR 7004, 7022, 7063, 7070, 7162, 7193, 7952, BS: HR 203, 3HR1, HR2, HR3, HR4, BS4HR 601
Download the Alloy 105 Data Sheet Download

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