Cr20Ni30

Alloy Category: High Electrical Resistance Alloy Base Material Shape: Wire (Round/Flat Wire) Alloy Series: Nickel-Chromium Alloy Implementation Standard: GB/T1234-2012 Certification: ISO9001:2015

Category：

Nickel-chromium series

Keywords：High resistance electric heating alloy | Corrosion-resistant alloy | Thermal spraying materials

Message

Cr20Ni30

Alloy is a widely used high-temperature alloy, widely used in the manufacture of various high-temperature equipment and industrial equipment, such as high-temperature furnaces, high-temperature heat treatment equipment, heat exchangers, burners, aero engines, etc.

Chemical Composition

Alloy Grade	Chemical Composition (mass fraction)/%
	C	P	S	Mn	Si	Cr	Ni	Al	Fe	Others
	Not more than
Cr20Ni30	0.08	0.020	0.015	1.00	1.00～3.00	18.0～21.0	30.0～34.0	-	Balance	—

Physical Properties

Alloy Grade	Maximum Component Operating Temperature ℃	Melting Point (approximate) ℃	Density g/cm³	Resistivity (20 ℃) μΩ ·m	Specific Heat Capacity J/(g·K	Thermal Conductivity (20 ℃) W/(m·K)	Average Linear Expansion Coefficient α (20℃~1000 ℃) 10-*/K	Structure	Magnetic Properties
Cr20Ni30	1100	1390	7.90	1.04	0.50	13	19.0	Austenite	Non-magnetic

Mechanical Properties

Alloy Grade	Alloy State	Tensile Strength Rm/MPa Not less than	Elongation A/% Not less than
			All wires with diameter >3.00 mm and nickel-chromium strips with thickness >0.200 mm	All wires with diameter 0.10 mm～3.00 mm and iron-chromium-aluminum strips with thickness >0.200 mm
Cr20N30	Solid Solution	600	25	20

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