Nichrome Heating Resistance Alloy Wire Cr20ni80

• Customization: Available
• Product Type: Wire
• Material: Nicr
• Model NO.: Cr20Ni80
• Surface: Bright
• Sample: Available
• Transport Package: Carton or Wooden Case
• Trademark: REOU
• Origin: Jiangyin, China
• Production Capacity: 100 Tons Per Month

Product Description

Nickel Chromium Wire

Nickel-Chrome & Nickel-Chrome-Iron alloy wire
The Nickel-Chrome and Nickel-Chrome-Iron alloy wires are widely used as the high resistance alloy for electrical heating and wire-wound resistors in metallurgical industry,chemical industry and electrical industry, etc.   
This alloy wire has higher electrical resistance coefficient, good anti-oxidation and anti-corrosion performance, and it also has good mechanical workability and weldability, with a high strength at high temperature.
 

Main characteristics of Ni-Cr and Ni-Cr-Fe electric heating alloys

 

Type                  Performance		Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30	Cr25Ni20
Main Chemical composition	Ni	Rest	Rest	55.0-61.0	34.0-37.0	30.0-34.0	19.0-22.0
	Cr	20.0-23.0	28.0-31.0	15.0-18.0	18.0-21.0	18.0-21.0	24.0-26.0
	Fe	≤1.0	≤1.0	Rest	Rest	Rest	Rest
Max. continuous service temp. of element (ºC)		1200	1250	1150	1100	1100	1050
Resistivity at 20oC (μΩ·m)		1.09±0.05	1.18±0.05	1.12±0.05	1.0±0.05	1.04±0.05	0.95±0.05
Density (g/cm^3)		8.40	8.10	8.20	7.90	7.90	7.15
Thermal conductivity (KJ/m·h·ºC)		60.3	45.2	45.2	43.8	43.8	43.8
Coefficient of lines expansion  (α×10^-6/ºC)		18.0	17.0	17.0	19.0	19.0	19.0
Melting point (approx.)( ºC)		1400	1380	1390	1390	1390	1400
Elongation at rupture (%)		>20	>20	>20	>20	>20	>20
Micrographic structure		austenite	austenite	austenite	austenite	austenite	austenite
Magnetic properties		nonmagnetic	nonmagnetic	nonmagnetic	Weak magnetic	Weak magnetic	Weak magnetic

Note: The various grades of electric resistance alloy material are blended with the amount of rare earth , titanium and other trace elements, to improve the processing performance and extend the period of the uselife .

Working




Certification