Special Metals INCONEL® Alloy 625

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Special Metals INCONEL® Alloy 625
Categories:	Metal; Nonferrous Metal; Nickel Alloy; Superalloy
Material Notes:	A nickel-chromium-molybdenum alloy with an addition of niobium that acts with the molybdenum to stiffen the alloy's matrix and thereby provide high strength without a strengthening heat treatment. The alloy resists a wide range of severely corrosive environments and is especially resistant to pitting and crevice corrosion. Used in chemical processing, aerospace and marine engineering, pollution-control equipment, and nuclear reactors. Standard product forms are round, flats, forging stock, extruded section, pipe, tube, plate, sheet, strip, and wire. Data provided by the manufacturer, Special Metals.
Key Words:	ASME SB-443, SB-444, SB-446, SB-564, Boiler Code Sections I, III, VIII, IX; AFNOR NC 22 D Nb; VdTUV 499, AMS 5581, AMS 5599, AMS 5666, AMS 5837; DIN 17744, 17750-17752, 17754; Werkstoff Nr. 2.4856; NACE MR-01-75, UNS N06625; BS 3072, 3074, 3076 (NA21); ASTM B443, ASTM B444, ASTM B446, ASTM B564, ASTM B704, ASTM B705, ASTM B751
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Physical Properties	Metric	English	Comments

Density	8.44 g/cc	0.305 lb/in³

Mechanical Properties	Metric	English	Comments
Tensile Strength, Ultimate	880 MPa	128000 psi	Annealed
	760 MPa @Temperature 650 °C	110000 psi @Temperature 1200 °F	Annealed prior to test
Tensile Strength, Yield	460 MPa	66700 psi	Annealed
	290 MPa @Temperature 650 °C	42100 psi @Temperature 1200 °F	Annealed prior to test
Elongation at Break	50 %	50 %	Annealed prior to test.
	55 % @Temperature 650 °C	55 % @Temperature 1200 °F	Annealed prior to test.
Rupture Strength	17.2 MPa @Temperature 982 °C, Time 3.60e+6 sec	2500 psi @Temperature 1800 °F, Time 1000 hour
	31.0 MPa @Temperature 982 °C, Time 360000 sec	4500 psi @Temperature 1800 °F, Time 100 hour
	89.6 MPa @Temperature 816 °C, Time 3.60e+6 sec	13000 psi @Temperature 1500 °F, Time 1000 hour
	124 MPa @Temperature 816 °C, Time 360000 sec	18000 psi @Temperature 1500 °F, Time 100 hour
	365 MPa @Temperature 649 °C, Time 3.60e+6 sec	53000 psi @Temperature 1200 °F, Time 1000 hour
	441 MPa @Temperature 649 °C, Time 360000 sec	64000 psi @Temperature 1200 °F, Time 100 hour

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.000129 ohm-cm	0.000129 ohm-cm
Magnetic Permeability	1.0006	1.0006	at 200 Oersted (15.9 kA/m)
Curie Temperature	<= -196 °C	<= -321 °F

Thermal Properties	Metric	English	Comments
CTE, linear	12.8 µm/m-°C @Temperature 20.0 - 100 °C	7.11 µin/in-°F @Temperature 68.0 - 212 °F
Specific Heat Capacity	0.410 J/g-°C	0.0980 BTU/lb-°F
Thermal Conductivity	9.80 W/m-K	68.0 BTU-in/hr-ft²-°F
Melting Point	1290 - 1350 °C	2350 - 2460 °F
Solidus	1290 °C	2350 °F
Liquidus	1350 °C	2460 °F

Component Elements Properties	Metric	English	Comments
Aluminum, Al	<= 0.40 %	<= 0.40 %
Carbon, C	<= 0.10 %	<= 0.10 %
Chromium, Cr	20 - 23 %	20 - 23 %
Cobalt, Co	<= 1.0 %	<= 1.0 %
Iron, Fe	<= 5.0 %	<= 5.0 %
Manganese, Mn	<= 0.50 %	<= 0.50 %
Molybdenum, Mo	8.0 - 10 %	8.0 - 10 %
Nickel, Ni	>= 58 %	>= 58 %
Niobium, Nb (Columbium, Cb)	3.15 - 4.15 %	3.15 - 4.15 %	Includes Ta
Phosphorus, P	<= 0.015 %	<= 0.015 %
Silicon, Si	<= 0.50 %	<= 0.50 %
Sulfur, S	<= 0.015 %	<= 0.015 %
Titanium, Ti	<= 0.40 %	<= 0.40 %

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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NINC33 / 17402

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