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. % Al Max 0.35   C Max 0.1   Co Max 1   Cr 11 - 14

Component    Wt. % Cu Max 0.5   Fe 33   Mn Max 0.5   Mo 5 - 6.5

Component    Wt. % Ni 40 - 45   S Max 0.03   Si Max 0.4   Ti 2.8 - 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 1110°F (600°C). 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 Properties	Metric	English	Comments
Density	8.14 g/cc	0.294 lb/in³
Mechanical Properties
Tensile Strength, Ultimate	1200 MPa	174000 psi	Precipitation Hardened. Value at room temperature.
Tensile Strength, Ultimate at Elevated Temperature	1030 MPa	149000 psi	Precipitation Hardened prior to test; 550°C
Tensile Strength, Yield	875 MPa	127000 psi	Precipitation Hardened. Value at room temperature; 0.2% offset.
Tensile Strength, Yield at Elevated Temperature	800 MPa	116000 psi	Precipitation Hardened prior to test; 0.2% offset; 550°C
Elongation at Break	15 %	15 %	Precipitation Hardened
Elongation at Break at Elevated Temperature	10 %	10 %	Precipitation Hardened prior to test.; 550°C
Electrical Properties
Electrical Resistivity	0.000112 ohm-cm	0.000112 ohm-cm
Magnetic Permeability	1.013	1.013	at 200 oersted (15.9 kA/m)
Thermal Properties
CTE, linear 20°C	13.5 µm/m-°C	7.5 µin/in-°F	20-100°C
Specific Heat Capacity	0.431 J/g-°C	0.103 BTU/lb-°F
Melting Point	1280 - 1345 °C	2340 - 2450 °F
Solidus	1280 °C	2340 °F
Liquidus	1345 °C	2450 °F