HP Alloys Alloy 718, 25% Cold Worked, Aged

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HP Alloys Alloy 718, 25% Cold Worked, Aged
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	25% Cold Worked, Aged applies to tensile and/or hardness; other properties are typical of this alloy. Data provided by High Performance Alloys, Inc., Allvac, Inco Alloys International, and Haynes International.
Key Words:	NACE MR-01-75, ASTM B626; AFNOR NC 19 Fe Nb, UNS N07718, AMS 5596, AMS 5597, AMS 5662, AMS 5664, AMS 5832, AMS 5589, AMS 5590, Werkstoff Nr. 2.4668; WL Nr. 2.4668; MIL-N-24469; NACE MR-01-75; AECMA Pr EN 2404, 2405, 2407, 2408, 2952, 2961, 3219
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Physical Properties	Metric	English	Comments

Density	8.20 g/cc	0.296 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	1586 MPa	230000 psi
Tensile Strength, Yield	1517 MPa	220000 psi
Elongation at Break	15 %	15 %
Reduction of Area	35 %	35 %
Modulus of Elasticity	200 GPa	29000 ksi

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000123 ohm-cm	0.000123 ohm-cm
Magnetic Permeability	1.0011	1.0011	at 200 oersted (15.9 kA/m)
Curie Temperature	-112 °C	-170 °F

Thermal Properties	Metric	English	Comments
CTE, linear	12.9 µm/m-°C @Temperature 20.0 - 100 °C	7.17 µin/in-°F @Temperature 68.0 - 212 °F
	13.5 µm/m-°C @Temperature 25.0 - 200 °C	7.50 µin/in-°F @Temperature 77.0 - 392 °F
	14.3 µm/m-°C @Temperature 25.0 - 500 °C	7.94 µin/in-°F @Temperature 77.0 - 932 °F
	17.2 µm/m-°C @Temperature 25.0 - 900 °C	9.56 µin/in-°F @Temperature 77.0 - 1650 °F
Specific Heat Capacity	0.435 J/g-°C	0.104 BTU/lb-°F
Thermal Conductivity	11.4 W/m-K	79.1 BTU-in/hr-ft²-°F
Melting Point	1260 - 1336 °C	2300 - 2437 °F
Solidus	1260 °C	2300 °F
Liquidus	1336 °C	2437 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	0.20 - 0.80 %	0.20 - 0.80 %
Boron, B	<= 0.0060 %	<= 0.0060 %
Carbon, C	<= 0.080 %	<= 0.080 %
Chromium, Cr	17 - 21 %	17 - 21 %
Cobalt, Co	<= 1.0 %	<= 1.0 %
Copper, Cu	<= 0.30 %	<= 0.30 %
Iron, Fe	17 %	17 %
Manganese, Mn	<= 0.35 %	<= 0.35 %
Molybdenum, Mo	2.8 - 3.3 %	2.8 - 3.3 %
Nickel, Ni	50 - 55 %	50 - 55 %
Niobium, Nb (Columbium, Cb)	4.75 - 5.5 %	4.75 - 5.5 %
Phosphorus, P	<= 0.015 %	<= 0.015 %
Silicon, Si	<= 0.35 %	<= 0.35 %
Sulfur, S	<= 0.015 %	<= 0.015 %
Titanium, Ti	0.65 - 1.15 %	0.65 - 1.15 %

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NPH722 / 18799

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