Ni80Cr20 Round Wire: Diameter 0.018mm~10mm

Ni80Cr20 Ribbon: Width 5~0.5mm, thickness 0.01-2mm

Grade: Ni80Cr20, Ni70Cr30, Ni60Cr16, Ni60Cr23, Ni35Cr20Fe

Nichrome"s metallurgical structure confers them a very good plasticity when cold.

In addition of a relatively high specific resistance, Ni-Cr alloys join all the necessary properties for good performances in use of furnaces: Resistance to oxidation (they are not sensitive to aggressions of humid air).

Low embrittlement at high temperature. Good plasticity-Easier to give them a shape compared with FeCrAl (lower mechanical characteristics allow indeed a good control of elasticity of the product during shaping (coiling, folding, drawing).

Good resistance to creeping (more important than ferritic alloys) which is important during conception of a resistance presenting big heights of waves. Maximal temperature recommended in the furnace: 1922/2012F in order to obtain a reasonable life time of the elements.

Chemical Composition and Main Properties of Nichrome
Properties \ Grade		Ni80Cr20	Ni70Cr30	Ni60Cr15	Ni35Cr20	Ni30Cr20
Main Chemical Composition	Ni	Balance	Balance	55.0-61.0	34.0-37.0	30.0-34.0
	Cr	20.0-23.0	28.0-31.0	15.0-18.0	18.0-21.0	18.0-21.0
	Fe	≤ 1.0	≤ 1.0	Balance	Balance	Balance
Max Continuous Service Temperature(oC)		1200	1250	1150	1100	1100
Resisivity 20oC  (Ω mm2/m)		1.09	1.18	1.12	1.04	1.04
Density (g/cm3)		8.4	8.1	8.2	7.9	7.9
Thermal Conductivity(KJ/m@ h@ oC)		60.3	45.2	45.2	43.8	43.8
Coefficient of Thermal Expansion(α × 10-6/oC)		18	17	17	19	19
Melting Point( oC)		1400	1380	1390	1390	1390
Elongation(%)		> 20	> 20	> 20	> 20	> 20
Micrographic Structure		austenite	austenite	austenite	austenite	austenite
Magnetic Property		nonmagnetic	nonmagnetic	nonmagnetic	Weak magnetic	Weak magnetic