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Special Metals INCOLOY® Alloy 909

Category Metal , Superalloy , Iron Base
Manufacturer Special Metals (includes the former Inco Alloys International Inc.)
Trade Name INCOLOY®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Special Metals INCOLOY® Alloy 909.pdf
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Material Notes:
A nickel-iron-cobalt alloy with a silicon addition and containing niobium and titanium for precipitation hardening. It is similar to INCOLOY alloys 903 and 907 in that it has low thermal expansion and high strength. However, the silicon addition results in improved notch-rupture and tensile properties that are achieved with less-restrictive processing and significantly shorter heat treatments. Used for gas-turbine casings, shrouds, vanes, and shafts. Standard product forms are round, flats, forging stock, extruded section, sheet, and wire.Data provided by the manufacturer, Special Metals.
Physical Properties Metric English Comments
Density 8.30 g/cc
0.300 lb/in³
Mechanical Properties Metric English Comments
Tensile Strength, Ultimate 1160 MPa

@Temperature 550 °C
168000 psi

@Temperature 1020 °F
Precipitation Hardened prior to test
1300 MPa

@Temperature 23.0 °C
189000 psi

@Temperature 73.4 °F
Tensile Strength, Yield 1140 MPa

@Strain 0.200 %
165000 psi

@Strain 0.200 %
Precipitation Hardened. Value at room temperature
950 MPa

@Strain 0.200 %,
Temperature 550 °C
138000 psi

@Strain 0.200 %,
Temperature 1020 °F
Precipitation Hardened prior to test
Elongation at Break 15 %
15 %
Precipitation Hardened
15 %

@Temperature 550 °C
15 %

@Temperature 1020 °F
Precipitation Hardened prior to test.
Thermal Properties Metric English Comments
CTE, linear 7.70 µm/m-°C

@Temperature 20.0 - 427 °C
4.28 µin/in-°F

@Temperature 68.0 - 801 °F
Specific Heat Capacity 0.427 J/g-°C
0.102 BTU/lb-°F
Thermal Conductivity 14.8 W/m-K
103 BTU-in/hr-ft²-°F
Melting Point 1395 - 1430 °C
2543 - 2610 °F
Solidus 1395 °C
2543 °F
Liquidus 1430 °C
2610 °F
Component Elements Properties Metric English Comments
Aluminum, Al 0.030 %
0.030 %
Carbon, C 0.010 %
0.010 %
Cobalt, Co 13 %
13 %
Iron, Fe 42 %
42 %
Nickel, Ni 38 %
38 %
Niobium, Nb (Columbium, Cb) 4.7 %
4.7 %
Silicon, Si 0.40 %
0.40 %
Titanium, Ti 1.5 %
1.5 %
Electrical Properties Metric English Comments
Electrical Resistivity 0.0000728 ohm-cm
0.0000728 ohm-cm
Curie Temperature 400 - 455 °C
752 - 851 °F
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