Nickel-chromium(NiCr)Resistance wire series:

Technical parameters of Nickel-chrome,Nickel-chrome-Fe wire Table:

Performance material		Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
Composition	Ni	Rest	Rest	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	Rest	Rest	Rest
Maximum temperature℃		1200	1250	1150	1100	1100
Meltiing point ℃		1400	1380	1390	1390	1390
Density g/cm3		8.40	8.10	8.20	7.90	7.90
Resistivity μΩ·m，20℃		1.09±0.05	1.18±0.05	1.12±0.05	1.00±0.05	1.04±0.05
Elongation at rupture		≥20	≥20	≥20	≥20	≥20
Specific heat J/g.℃		0.440	0.461	0.494	0.500	0.500
Thermal conductivity KJ/m.h℃		60.3	45.2	45.2	43.8	43.8
Coefficient of lines expansion a×10-6/℃ （20～1000℃）		18.0	17.0	17.0	19.0	19.0
Micrographic structure		Austenite	Austenite	Austenite	Austenite	Austenite
Magnetic properties		Nonmagnetic	Nonmagnetic	Nonmagnetic	Weak magnetic	Weak magnetic