Special Metals INCONEL® alloy 22 Austenitic Alloy

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Special Metals INCONEL® alloy 22 Austenitic Alloy
Categories:	Metal; Nonferrous Metal; Nickel Alloy
Material Notes:	INCONEL® alloy 22 (UNS N06022; W.Nr. 2.4602; NiCr21Mo14W) is a fully austenitic advanced corrosion-resistant alloy that offers resistance to both aqueous corrosion and attack at elevated temperatures. This alloy provides exceptional resistance to general corrosion, pitting, crevice corrosion, intergranular attack, and stress corrosion cracking. Alloy 22 has found numerous applications in the chemical/petrochemical processing, pollution control (flue gas desulfurization), power, marine, pulp and paper processing, and waste disposal industries. Information Provided by Special Metals Corporation
Key Words:	UNS N06022; W. Nr. 2.4602; NiCr21Mo14W; ASTM B462; ASTM B564; ASTME SB 564; ASTM B 574; ASME 2226; N-621; ISO 9723; 9724; DIN 17752; 17753; 17754; ASTM B 575; B906; DIN 17750; ISO 6208; ASTM B 619; ASTM B 622; DIN 17751; ASTM B 366; DIN 17744
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Physical Properties	Metric	English	Comments

Density	8.61 g/cc	0.311 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell B	89	89	Plate
	89	89	Bar
	93	93	Sheet
Tensile Strength at Break	772 MPa	112000 psi	Plate
	793 MPa	115000 psi	Bar
	841 MPa	122000 psi	Sheet
Tensile Strength, Yield	365 MPa @Strain 0.2 %	52900 psi @Strain 0.2 %	Plate
	379 MPa @Strain 0.2 %	55000 psi @Strain 0.2 %	Bar
	434 MPa @Strain 0.2 %	62900 psi @Strain 0.2 %	Sheet
Elongation at Break	54 %	54 %	Sheet
	60 %	60 %	Bar
	62 %	62 %	Plate
Modulus of Elasticity	209 GPa	30300 ksi	Dynamic

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.0001215 ohm-cm	0.0001215 ohm-cm
Magnetic Permeability	<= 1.001	<= 1.001	at 200 Oersted (15.9 kA/m)

Thermal Properties	Metric	English	Comments
CTE, linear	12.42 µm/m-°C @Temperature 193 °C	6.900 µin/in-°F @Temperature 379 °F
Specific Heat Capacity	0.381 J/g-°C	0.0911 BTU/lb-°F
Thermal Conductivity	7.3995 W/m-K @Temperature 23.0 °C	51.353 BTU-in/hr-ft²-°F @Temperature 73.4 °F
	10.148 W/m-K @Temperature 100 °C	70.427 BTU-in/hr-ft²-°F @Temperature 212 °F
	14.089 W/m-K @Temperature 300 °C	97.778 BTU-in/hr-ft²-°F @Temperature 572 °F
	16.4 W/m-K @Temperature 500 °C	114 BTU-in/hr-ft²-°F @Temperature 932 °F
	22.733 W/m-K @Temperature 700 °C	157.77 BTU-in/hr-ft²-°F @Temperature 1290 °F
	23.696 W/m-K @Temperature 900 °C	164.45 BTU-in/hr-ft²-°F @Temperature 1650 °F
	27.56 W/m-K @Temperature 1100 °C	191.3 BTU-in/hr-ft²-°F @Temperature 2010 °F
Melting Point	1351 - 1387 °C	2464 - 2529 °F
Solidus	1351 °C	2464 °F
Liquidus	1387 °C	2529 °F

Component Elements Properties	Metric	English	Comments
Carbon, C	<= 0.015 %	<= 0.015 %
Chromium, Cr	20 - 22.5 %	20 - 22.5 %
Cobalt, Co	<= 2.5 %	<= 2.5 %
Iron, Fe	2.0 - 6.0 %	2.0 - 6.0 %
Manganese, Mn	<= 0.50 %	<= 0.50 %
Molybdenum, Mo	12.5 - 14.5 %	12.5 - 14.5 %
Nickel, Ni	50.015 - 63 %	50.015 - 63 %	Balance
Phosphorus, P	<= 0.020 %	<= 0.020 %
Silicon, Si	<= 0.080 %	<= 0.080 %
Sulfur, S	<= 0.020 %	<= 0.020 %
Tungsten, W	2.5 - 3.5 %	2.5 - 3.5 %
Vanadium, V	<= 0.35 %	<= 0.35 %

Descriptive Properties
Critical Crevice Temperature (°C)	75
Critical Pitting Temperature (°C)	>85

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