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Rulon Bearings

Special Metals INCOLOY® Alloy 945 Nickel-Iron-Chromium Alloy, Cold Drawn, Annealed and Aged Tubing (UNS N09945)
Categories: Metal; Nonferrous Metal; Nickel Alloy
Material Notes: INCOLOY® alloy 945 (UNS N09945) is a high-strength, corrosion-resistant alloy designed for demanding applications in the oil and gas industry. The properties of this age hardenable nickel-iron-chromium alloy are enhanced by its contents of molybdenum, copper, niobium, titanium, and aluminum. The nickel content results in resistance to chloride-induced stress corrosion cracking. Nickel, in conjunction with the molybdenum and copper, gives alloy 945 outstanding resistance to general corrosion in reducing media. Molybdenum imparts resistance to localized attack (pitting and crevice corrosion). The chromium provides resistance in oxidizing environments. Niobium, titanium and aluminum participate in the age hardening reaction that occurs during heat treatment. Their interaction forms gamma prime and gamma double prime precipitates, which strengthen the alloy.

INCOLOY 945 is suitable for downhole oil and gas applications requiring high strength and corrosion resistance in aggressive sour wells containing high levels of hydrogen sulfide and chlorides. Because of the resistance to stress cracking in environments rich in hydrogen sulfide, it is suitable for downhole and surface gas-well components including tubular products, valves, hangers, landing nipples, tool joints and packers. The alloy can also be used for fasteners, pump shafting and high strength piping systems.

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 PropertiesMetricEnglishComments
Density 8.20 g/cc0.296 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell C 39
@Thickness 19.0 mm		39
@Thickness 0.748 in		157 mm diameter
Tensile Strength 1201 MPa
@Thickness 19.0 mm		174200 psi
@Thickness 0.748 in		157 mm diameter
Tensile Strength, Yield 973 MPa
@Thickness 19.0 mm		141000 psi
@Thickness 0.748 in		157 mm diameter
Elongation at Break 23.7 %
@Thickness 19.0 mm		23.7 %
@Thickness 0.748 in		157 mm diameter
Reduction of Area 39 %
@Thickness >=19.0 mm		39 %
@Thickness >=0.748 in		157 mm diameter
Modulus of Elasticity  155 GPa
@Temperature 704 °C		22500 ksi
@Temperature 1300 °F
 159 GPa
@Temperature 649 °C		23100 ksi
@Temperature 1200 °F
 163 GPa
@Temperature 593 °C		23600 ksi
@Temperature 1100 °F
 167 GPa
@Temperature 538 °C		24200 ksi
@Temperature 1000 °F
 169 GPa
@Temperature 482 °C		24500 ksi
@Temperature 900 °F
 173 GPa
@Temperature 427 °C		25100 ksi
@Temperature 801 °F
 176 GPa
@Temperature 371 °C		25500 ksi
@Temperature 700 °F
 179 GPa
@Temperature 316 °C		26000 ksi
@Temperature 601 °F
 182 GPa
@Temperature 260 °C		26400 ksi
@Temperature 500 °F
 185 GPa
@Temperature 204 °C		26800 ksi
@Temperature 399 °F
 188 GPa
@Temperature 149 °C		27300 ksi
@Temperature 300 °F
 192 GPa
@Temperature 93.0 °C		27800 ksi
@Temperature 199 °F
 195 GPa
@Temperature 23.0 °C		28300 ksi
@Temperature 73.4 °F
Poissons Ratio  0.31
@Temperature 23.0 °C		0.31
@Temperature 73.4 °F
 0.31
@Temperature 93.0 °C		0.31
@Temperature 199 °F
 0.31
@Temperature 149 °C		0.31
@Temperature 300 °F
 0.31
@Temperature 204 °C		0.31
@Temperature 399 °F
 0.32
@Temperature 260 °C		0.32
@Temperature 500 °F
 0.32
@Temperature 316 °C		0.32
@Temperature 601 °F
 0.32
@Temperature 371 °C		0.32
@Temperature 700 °F
 0.32
@Temperature 427 °C		0.32
@Temperature 801 °F
 0.32
@Temperature 482 °C		0.32
@Temperature 900 °F
 0.33
@Temperature 538 °C		0.33
@Temperature 1000 °F
 0.33
@Temperature 593 °C		0.33
@Temperature 1100 °F
 0.34
@Temperature 649 °C		0.34
@Temperature 1200 °F
 0.34
@Temperature 704 °C		0.34
@Temperature 1300 °F
Fatigue Strength  414 MPa
@Frequency 100 Hz,
# of Cycles 1.00e+7 		60000 psi
@Frequency 100 Hz,
# of Cycles 1.00e+7 		Kt = 1; R = -1; sample geometry and heat treatment not reported
 517 MPa
@Frequency 100 Hz,
# of Cycles 1.00e+6 		75000 psi
@Frequency 100 Hz,
# of Cycles 1.00e+6 		Kt = 1; R = -1; sample geometry and heat treatment not reported
 552 MPa
@Frequency 100 Hz,
# of Cycles 300000 		80000 psi
@Frequency 100 Hz,
# of Cycles 300000 		Kt = 1; R = -1; sample geometry and heat treatment not reported
Shear Modulus  58.0 GPa
@Temperature 704 °C		8410 ksi
@Temperature 1300 °F
 59.0 GPa
@Temperature 649 °C		8560 ksi
@Temperature 1200 °F
 61.0 GPa
@Temperature 593 °C		8850 ksi
@Temperature 1100 °F
 63.0 GPa
@Temperature 538 °C		9140 ksi
@Temperature 1000 °F
 64.0 GPa
@Temperature 482 °C		9280 ksi
@Temperature 900 °F
 65.0 GPa
@Temperature 427 °C		9430 ksi
@Temperature 801 °F
 67.0 GPa
@Temperature 371 °C		9720 ksi
@Temperature 700 °F
 68.0 GPa
@Temperature 316 °C		9860 ksi
@Temperature 601 °F
 69.0 GPa
@Temperature 260 °C		10000 ksi
@Temperature 500 °F
 70.0 GPa
@Temperature 149 °C		10200 ksi
@Temperature 300 °F
 70.0 GPa
@Temperature 204 °C		10200 ksi
@Temperature 399 °F
 74.0 GPa
@Temperature 23.0 °C		10700 ksi
@Temperature 73.4 °F
 74.0 GPa
@Temperature 93.0 °C		10700 ksi
@Temperature 199 °F
Impact Test 87.0 J
@Diameter 19.0 mm		64.2 ft-lb
@Diameter 0.748 in		157 mm diameter
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.000110 ohm-cm0.000110 ohm-cm
Magnetic Permeability 1.0031.003200 Oe
 
Thermal PropertiesMetricEnglishComments
CTE, linear  14.19 µm/m-°C
@Temperature 25.0 - 93.0 °C		7.883 µin/in-°F
@Temperature 77.0 - 199 °F
 14.24 µm/m-°C
@Temperature 25.0 - 149 °C		7.911 µin/in-°F
@Temperature 77.0 - 300 °F
 14.36 µm/m-°C
@Temperature 25.0 - 204 °C		7.978 µin/in-°F
@Temperature 77.0 - 399 °F
 14.47 µm/m-°C
@Temperature 25.0 - 260 °C		8.039 µin/in-°F
@Temperature 77.0 - 500 °F
 14.69 µm/m-°C
@Temperature 25.0 - 316 °C		8.161 µin/in-°F
@Temperature 77.0 - 601 °F
 14.94 µm/m-°C
@Temperature 25.0 - 371 °C		8.300 µin/in-°F
@Temperature 77.0 - 700 °F
 15.12 µm/m-°C
@Temperature 25.0 - 427 °C		8.400 µin/in-°F
@Temperature 77.0 - 801 °F
 15.26 µm/m-°C
@Temperature 25.0 - 482 °C		8.478 µin/in-°F
@Temperature 77.0 - 900 °F
 15.39 µm/m-°C
@Temperature 25.0 - 538 °C		8.550 µin/in-°F
@Temperature 77.0 - 1000 °F
 15.64 µm/m-°C
@Temperature 25.0 - 593 °C		8.689 µin/in-°F
@Temperature 77.0 - 1100 °F
 15.93 µm/m-°C
@Temperature 25.0 - 649 °C		8.850 µin/in-°F
@Temperature 77.0 - 1200 °F
 16.32 µm/m-°C
@Temperature 25.0 - 704 °C		9.067 µin/in-°F
@Temperature 77.0 - 1300 °F
 16.89 µm/m-°C
@Temperature 25.0 - 760 °C		9.383 µin/in-°F
@Temperature 77.0 - 1400 °F
 17.47 µm/m-°C
@Temperature 25.0 - 916 °C		9.706 µin/in-°F
@Temperature 77.0 - 1680 °F
 18.01 µm/m-°C
@Temperature 25.0 - 871 °C		10.01 µin/in-°F
@Temperature 77.0 - 1600 °F
Specific Heat Capacity  0.445 J/g-°C
@Temperature 23.0 °C		0.106 BTU/lb-°F
@Temperature 73.4 °F
 0.455 J/g-°C
@Temperature 50.0 °C		0.109 BTU/lb-°F
@Temperature 122 °F
 0.467 J/g-°C
@Temperature 100 °C		0.112 BTU/lb-°F
@Temperature 212 °F
 0.491 J/g-°C
@Temperature 200 °C		0.117 BTU/lb-°F
@Temperature 392 °F
 0.515 J/g-°C
@Temperature 300 °C		0.123 BTU/lb-°F
@Temperature 572 °F
 0.540 J/g-°C
@Temperature 400 °C		0.129 BTU/lb-°F
@Temperature 752 °F
 0.563 J/g-°C
@Temperature 500 °C		0.135 BTU/lb-°F
@Temperature 932 °F
 0.588 J/g-°C
@Temperature 600 °C		0.141 BTU/lb-°F
@Temperature 1110 °F
 0.607 J/g-°C
@Temperature 700 °C		0.145 BTU/lb-°F
@Temperature 1290 °F
 0.639 J/g-°C
@Temperature 800 °C		0.153 BTU/lb-°F
@Temperature 1470 °F
 0.670 J/g-°C
@Temperature 900 °C		0.160 BTU/lb-°F
@Temperature 1650 °F
 0.688 J/g-°C
@Temperature 1000 °C		0.164 BTU/lb-°F
@Temperature 1830 °F
 0.690 J/g-°C
@Temperature 1100 °C		0.165 BTU/lb-°F
@Temperature 2010 °F
 0.700 J/g-°C
@Temperature 1150 °C		0.167 BTU/lb-°F
@Temperature 2100 °F
Thermal Conductivity  10.9 W/m-K
@Temperature 23.0 °C		75.6 BTU-in/hr-ft²-°F
@Temperature 73.4 °F
 11.5 W/m-K
@Temperature 50.0 °C		79.8 BTU-in/hr-ft²-°F
@Temperature 122 °F
 12.5 W/m-K
@Temperature 100 °C		86.8 BTU-in/hr-ft²-°F
@Temperature 212 °F
 14.4 W/m-K
@Temperature 200 °C		99.9 BTU-in/hr-ft²-°F
@Temperature 392 °F
 16.4 W/m-K
@Temperature 300 °C		114 BTU-in/hr-ft²-°F
@Temperature 572 °F
 18.4 W/m-K
@Temperature 400 °C		128 BTU-in/hr-ft²-°F
@Temperature 752 °F
 20.3 W/m-K
@Temperature 500 °C		141 BTU-in/hr-ft²-°F
@Temperature 932 °F
 22.4 W/m-K
@Temperature 600 °C		155 BTU-in/hr-ft²-°F
@Temperature 1110 °F
 23.9 W/m-K
@Temperature 700 °C		166 BTU-in/hr-ft²-°F
@Temperature 1290 °F
 25.7 W/m-K
@Temperature 800 °C		178 BTU-in/hr-ft²-°F
@Temperature 1470 °F
 26.2 W/m-K
@Temperature 900 °C		182 BTU-in/hr-ft²-°F
@Temperature 1650 °F
 28.0 W/m-K
@Temperature 1000 °C		194 BTU-in/hr-ft²-°F
@Temperature 1830 °F
 29.5 W/m-K
@Temperature 1100 °C		205 BTU-in/hr-ft²-°F
@Temperature 2010 °F
Melting Point 1270 - 1377 °C2320 - 2511 °F
Solidus 1270 °C2320 °F
Liquidus 1377 °C2511 °F
 
Processing PropertiesMetricEnglishComments
Annealing Temperature 954 - 1066 °C1750 - 1951 °F
Hot-Working Temperature 930 - 1150 °C1710 - 2100 °F
 
Component Elements PropertiesMetricEnglishComments
Aluminum, Al 0.010 - 0.70 %0.010 - 0.70 %
Carbon, C 0.0050 - 0.040 %0.0050 - 0.040 %
Chromium, Cr 19.5 - 23 %19.5 - 23 %
Copper, Cu 1.5 - 3.0 %1.5 - 3.0 %
Iron, Fe 5.7 - 28 %5.7 - 28 %as balance
Manganese, Mn <= 1.0 %<= 1.0 %
Molybdenum, Mo 3.0 - 4.0 %3.0 - 4.0 %
Nickel, Ni 45 - 55 %45 - 55 %
Niobium, Nb (Columbium, Cb) 2.5 - 4.5 %2.5 - 4.5 %
Phosphorus, P <= 0.030 %<= 0.030 %
Silicon, Si <= 0.50 %<= 0.50 %
Sulfur, S <= 0.030 %<= 0.030 %
Titanium, Ti 0.50 - 2.5 %0.50 - 2.5 %

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