Special Metals NIMONIC Alloy 901

Subcategory: Metal; Nickel Base; Superalloy

Key Words: Nickel-Chromium Alloy; Werkstoff Nr. 2.4662, UNS N09901; BS HR53; SAE AMS 5660, 5661; WL Nr. 2.4662; AFNOR Z8 NC DT42; AECMA Pr EN 2176-2178

Component   Wt. %
AlMax 0.35 
CMax 0.1 
CoMax 1 
Cr11 - 14 
Component   Wt. %
CuMax 0.5 
MnMax 0.5 
Mo5 - 6.5 
Component   Wt. %
Ni40 - 45 
SMax 0.03 
SiMax 0.4 
Ti2.8 - 3.1 

Material Notes:
Nickel content above includes cobalt; iron content as remainder. A nickel-iron-chromium alloy containing titanium and aluminum for precipitation hardening and molybdenum for solid-solution strengthening. The alloy has high yield strength and creep resistance at temperatures to about 1110F (600C). A substantial iron content enables the alloy to combine high strength with good forging characteristics. Used in gas turbines for discs and shafts. Standard product form is round.

Data provided by the manufacturer, Special Metals.

Physical PropertiesMetricEnglishComments
Density8.14 g/cc0.294 lb/in 

Mechanical Properties
Tensile Strength, Ultimate1200 MPa174000 psi Precipitation Hardened. Value at room temperature.
Tensile Strength, Ultimate at Elevated Temperature1030 MPa149000 psi Precipitation Hardened prior to test; 550C
Tensile Strength, Yield875 MPa127000 psi Precipitation Hardened. Value at room temperature; 0.2% offset.
Tensile Strength, Yield at Elevated Temperature800 MPa116000 psi Precipitation Hardened prior to test; 0.2% offset; 550C
Elongation at Break15 %15 % Precipitation Hardened
Elongation at Break at Elevated Temperature10 %10 % Precipitation Hardened prior to test.; 550C

Electrical Properties
Electrical Resistivity0.000112 ohm-cm0.000112 ohm-cm 
Magnetic Permeability1.0131.013 at 200 oersted (15.9 kA/m)

Thermal Properties
CTE, linear 20C13.5 m/m-C7.5 in/in-F 20-100C
Specific Heat Capacity0.431 J/g-C0.103 BTU/lb-F 
Melting Point1280 - 1345 C2340 - 2450 F 
Solidus1280 C2340 F 
Liquidus1345 C2450 F 

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