Special Metals INCOLOY® Alloy MA 956

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Special Metals INCOLOY® Alloy MA 956
Categories:	Metal; Superalloy; Iron Base
Material Notes:	An iron-chromium-aluminum alloy that is oxide dispersion strengthened and produced by mechanical alloying. Production involves high-energy milling of metal powders to create an alloy with a strengthening yttrium oxide dispersoid that remains stable to the alloy's melting point. The alloy has exceptional strength and resistance to oxidation, carburization, and hot corrosion at temperatures to over 2000°F (1100°C). Used for gas-turbine combustion chambers, advanced energy-conversion systems, and other applications involving rigorous conditions. Standard product forms are round, flats, extruded section, tube, plate, sheet, and wire. Data provided by the manufacturer, Special Metals.
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Physical Properties	Original Value	Comments

Density	7.25 g/cc

Mechanical Properties	Original Value	Comments
Tensile Strength, Ultimate	650 MPa	Annealed
	590 MPa @Temperature 300 °C	Annealed prior to test
Tensile Strength, Yield	550 MPa	Annealed
	480 MPa @Temperature 300 °C	Annealed prior to test
Elongation at Break	9.0 %	Annealed prior to test.
	9.0 % @Temperature 300 °C	Annealed prior to test.

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000131 ohm-cm

Thermal Properties	Original Value	Comments
CTE, linear	11.3 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	0.469 J/g-°C
Thermal Conductivity	10.9 W/m-K
Melting Point	1311 - 1400 °C
Solidus	1311 °C
Liquidus	1400 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	4.5 %
Chromium, Cr	20 %
Iron, Fe	74 %
Titanium, Ti	0.50 %
Y2O3	0.50 %

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NINC88 / 17431

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