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Rulon Bearings

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Special Metals INCOLOY® Alloy 945X Nickel-Iron-Chromium Alloy, Annealed 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 40
@Diameter 152 mm
 40.5
@Diameter 305 mm
 40.5
@Diameter 51.0 mm
 40.5
@Diameter 89.0 mm
 42
@Diameter 25.0 mm
Tensile Strength 1224 MPa
@Diameter 89.0 mm
 1238 MPa
@Diameter 152 mm
 1238 MPa
@Diameter 305 mm
 1260 MPa
@Diameter 25.0 mm
 1275 MPa
@Diameter 51.0 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
 992 MPa
@Thickness 25.0 mm
 1008 MPa
@Thickness 89.0 mm
 1010 MPa
@Thickness 51.0 mm
 1011 MPa
@Thickness 305 mm
 1025 MPa
@Thickness 152 mm
Elongation at Break 27.1 %
@Diameter 152 mm
 29 %
@Diameter 305 mm
 29.9 %
@Diameter 25.0 mm
 29.9 %
@Diameter 51.0 mm
 30.6 %
@Diameter 89.0 mm
Reduction of Area 50.1 %
@Diameter 152 mm
 51 %
@Diameter 51.0 mm
 51.2 %
@Diameter 305 mm
 53.7 %
@Diameter 89.0 mm
 56 %
@Diameter 25.0 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
Impact Test 88.0 J
@Diameter 89.0 mm,
Temperature -59.4 °C
 102 J
@Diameter 152 mm,
Temperature -59.4 °C
 128 J
@Diameter 25.0 mm,
Temperature -59.4 °C
 136 J
@Diameter 51.0 mm,
Temperature -59.4 °C
 139.8 J
@Diameter 305 mm,
Temperature -59.4 °C
 
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 1270 °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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