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Elmet Technologies

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Special Metals INCOLOY® Alloy 945X Nickel-Iron-Chromium Alloy, Pump Shaft Grade, Cold Worked and Aged Rod (UNS N09945)
Categories: Metal; Nonferrous Metal; Nickel Alloy
Material Notes: INCOLOY® alloy 945X® (UNS N09945) is an age hardenable nickel-iron-chromium alloy with additions of molybdenum, copper, niobium, titanium, and aluminum. The alloy chemical composition is designed to provide a combination of high strength and excellent corrosion resistance. The nickel content is sufficient to provide protection against chloride-ion stress corrosion cracking. The nickel plus the molybdenum and copper give outstanding general corrosion resistance to reducing chemicals. The molybdenum aids resistance to pitting and crevice corrosion. The alloy’s high chromium content provides resistance to oxidizing environments. The niobium, titanium and aluminum are added to provide high volume fraction of sub-micron size uniformly distributed Ni3(NbTiAl)-type gamma prime and Ni3(TiNbAl)-type gamma double prime precipitates. Their precipitates are responsible for high strength of the alloy by virtue of a dispersion strengthening mechanism. A special precipitation hardening (age hardening) heat treatment is developed to provide required strength.

Data provided by the manufacturer, Special Metals.
Key Words: NACE MR0175 / ISO 15156-3
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 8.27 g/cc
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell C 45
@Thickness 25.8 mm
 45.8
@Thickness 17.8 mm
 45.9
@Thickness 38.1 mm
Tensile Strength 1515 MPa
@Diameter 25.8 mm
 1587 MPa
@Diameter 38.1 mm
 1596 MPa
@Diameter 17.8 mm
Tensile Strength, Yield 952 MPa
@Temperature 204 °C		geometry not reported
 952 MPa
@Temperature 232 °C		geometry not reported
 1000 MPa
@Temperature 93.0 °C		geometry not reported
 1000 MPa
@Temperature 149 °C		geometry not reported
 1043 MPa
@Temperature 25.0 °C		geometry not reported
 1457 MPa
@Thickness 25.8 mm
 1503 MPa
@Thickness 38.1 mm
 1527 MPa
@Thickness 17.8 mm
Elongation at Break 13.8 %
@Diameter 38.1 mm
 15.1 %
@Diameter 25.8 mm
 17.4 %
@Diameter 17.8 mm
Reduction of Area 32.8 %
@Diameter 38.1 mm
 39 %
@Diameter 17.8 mm
 40.3 %
@Diameter 25.8 mm
Modulus of Elasticity 161 GPa
@Temperature 760 °C
 168 GPa
@Temperature 649 °C
 175 GPa
@Temperature 538 °C
 185 GPa
@Temperature 371 °C
 197 GPa
@Temperature 204 °C
 203 GPa
@Temperature 24.0 °C
Poissons Ratio 0.31
@Temperature 23.0 °C		Alloy 945
 0.31
@Temperature 93.0 °C		Alloy 945
 0.31
@Temperature 149 °C		Alloy 945
 0.31
@Temperature 204 °C		Alloy 945
 0.32
@Temperature 260 °C		Alloy 945
 0.32
@Temperature 316 °C		Alloy 945
 0.32
@Temperature 371 °C		Alloy 945
 0.32
@Temperature 427 °C		Alloy 945
 0.32
@Temperature 482 °C		Alloy 945
 0.33
@Temperature 538 °C		Alloy 945
 0.33
@Temperature 593 °C		Alloy 945
 0.34
@Temperature 649 °C		Alloy 945
 0.34
@Temperature 704 °C		Alloy 945
Fracture Toughness 206 ksi-in½
@Temperature 232 °C		10 CPM; R = -1; geometry not reported
 215 ksi-in½
@Temperature 25.0 °C		10 CPM; R = -1; geometry not reported
 228 ksi-in½
@Temperature 204 °C		10 CPM; R = -1; geometry not reported
 232 ksi-in½
@Temperature 149 °C		10 CPM; R = -1; geometry not reported
 234 ksi-in½
@Temperature 93.0 °C		10 CPM; R = -1; geometry not reported
Shear Modulus 58.0 GPa
@Temperature 704 °C		Alloy 945
 59.0 GPa
@Temperature 649 °C		Alloy 945
 61.0 GPa
@Temperature 593 °C		Alloy 945
 63.0 GPa
@Temperature 538 °C		Alloy 945
 64.0 GPa
@Temperature 482 °C		Alloy 945
 65.0 GPa
@Temperature 427 °C		Alloy 945
 67.0 GPa
@Temperature 371 °C		Alloy 945
 68.0 GPa
@Temperature 316 °C		Alloy 945
 69.0 GPa
@Temperature 260 °C		Alloy 945
 70.0 GPa
@Temperature 149 °C		Alloy 945
 70.0 GPa
@Temperature 204 °C		Alloy 945
 74.0 GPa
@Temperature 23.0 °C		Alloy 945
 74.0 GPa
@Temperature 93.0 °C		Alloy 945
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 682 ohm-cir-mil/ft
Magnetic Permeability 1.002200 Oe
 
Thermal PropertiesOriginal ValueComments
CTE, linear 13.43 µm/m-°C
@Temperature 25.0 - 93.0 °C
 13.84 µm/m-°C
@Temperature 25.0 - 204 °C
 14.22 µm/m-°C
@Temperature 25.0 - 316 °C
 14.56 µm/m-°C
@Temperature 25.0 - 427 °C
 14.9 µm/m-°C
@Temperature 25.0 - 538 °C
 15.48 µm/m-°C
@Temperature 25.0 - 649 °C
 16.27 µm/m-°C
@Temperature 25.0 - 760 °C
 17.06 µm/m-°C
@Temperature 25.0 - 871 °C
Specific Heat Capacity 0.436 J/g-°C
@Temperature 21.0 °C
 0.452 J/g-°C
@Temperature 93.0 °C
 0.473 J/g-°C
@Temperature 204 °C
 0.490 J/g-°C
@Temperature 316 °C
 0.507 J/g-°C
@Temperature 427 °C
 0.536 J/g-°C
@Temperature 538 °C
 0.582 J/g-°C
@Temperature 649 °C
 0.611 J/g-°C
@Temperature 982 °C
 0.645 J/g-°C
@Temperature 1149 °C
 0.737 J/g-°C
@Temperature 760 °C
 0.766 J/g-°C
@Temperature 871 °C
Thermal Conductivity 10.6 W/m-K
@Temperature 21.0 °C
 11.7 W/m-K
@Temperature 93.0 °C
 13.5 W/m-K
@Temperature 204 °C
 15.1 W/m-K
@Temperature 316 °C
 16.7 W/m-K
@Temperature 427 °C
 18.5 W/m-K
@Temperature 538 °C
 21.2 W/m-K
@Temperature 649 °C
 21.8 W/m-K
@Temperature 760 °C
 22.6 W/m-K
@Temperature 871 °C
 23.4 W/m-K
@Temperature 982 °C
 25.4 W/m-K
@Temperature 1093 °C
Melting Point 1270 - 1329 °C
Solidus 1280 °C
Liquidus 1329 °C
 
Processing PropertiesOriginal ValueComments
Annealing Temperature 1010 - 1066 °C30 min to 4 hours, then water quench
Hot-Working Temperature 930 - 1150 °C
 
Component Elements PropertiesOriginal ValueComments
Aluminum, Al 0.010 - 0.70 %
Carbon, C 0.0050 - 0.040 %
Chromium, Cr 19.5 - 23 %
Copper, Cu 1.5 - 3.0 %
Iron, Fe 5.7 - 28 %as balance
Manganese, Mn <= 1.0 %
Molybdenum, Mo 3.0 - 4.0 %
Nickel, Ni 45 - 55 %
Niobium, Nb (Columbium, Cb) 2.5 - 4.5 %
Phosphorus, P <= 0.030 %
Silicon, Si <= 0.50 %
Sulfur, S <= 0.030 %
Titanium, Ti 0.50 - 2.5 %

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NINDA11u / 191603

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