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	Original Value	Comments

Density	8.61 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	89	Plate
	89	Bar
	93	Sheet
Tensile Strength at Break	772 MPa	Plate
	793 MPa	Bar
	841 MPa	Sheet
Tensile Strength, Yield	365 MPa @Strain 0.2 %	Plate
	379 MPa @Strain 0.2 %	Bar
	434 MPa @Strain 0.2 %	Sheet
Elongation at Break	54 %	Sheet
	60 %	Bar
	62 %	Plate
Modulus of Elasticity	209 GPa	Dynamic

Electrical Properties	Original Value	Comments
Electrical Resistivity	730.7 ohm-cir-mil/ft
Magnetic Permeability	<= 1.001	at 200 Oersted (15.9 kA/m)

Thermal Properties	Original Value	Comments
CTE, linear	12.42 µm/m-°C @Temperature 193 °C
Specific Heat Capacity	0.381 J/g-°C
Thermal Conductivity	7.3995 W/m-K @Temperature 23.0 °C
	10.148 W/m-K @Temperature 100 °C
	14.089 W/m-K @Temperature 300 °C
	16.4 W/m-K @Temperature 500 °C
	22.733 W/m-K @Temperature 700 °C
	23.696 W/m-K @Temperature 900 °C
	27.56 W/m-K @Temperature 1100 °C
Melting Point	1351 - 1387 °C
Solidus	1351 °C
Liquidus	1387 °C

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

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

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NINDA06 / 98897

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