N7/ Tophet70 /Resistohm70 wire used for heating furnaces

• Product Type: Wire
• Material: NiCr
• Carbon Content: Low Carbon
• PCD: 100mm
• Grade: NiCr7030/Ni70Cr30/NiCr 70/30
• Surface: Bright
• Model NO.: NiCr70/30
• condition: Annealing
• Shape: round wire , Ribbon wire and strip
• series alloy wires: ni80cr20/ni70cr30/ni60cr15/ni30cr20/ni20cr25
• usage: heating element/resistance wire/household applianc
• Item: N7/ Tophet70 /Resistohm70 wire used for heating
• Wire dia: 0.05~12mm
• Transport Package: Packing in Coil Cartons, Pallet, Spools, Coils
• Specification: in customers′ requirement
• Trademark: TANKII
• Origin: China
• HS Code: 75052200
• Production Capacity: 2000tons/Year

Product Description

N7/ Tophet70 /Resistohm70 wire used for heating furnaces

Propertes/Grade		NiCr 80/20	NiCr 70/30	NiCr 60/15	NiCr 35/20	NiCr 30/20
Main Chemical Composition(%)	Ni	Bal.	Bal.	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	Bal.	Bal.	Bal.
Max Working Temperature(ºC)		1200	1250	1150	1100	1100
Resistivity at 20ºC (μ Ω · 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	nonmagnetic	nonmagnetic

Product Description
Grade: Ni80Cr20 ,MWS-650,NiCrA,Tophet A,HAI-NiCr 80,Chromel A,Alloy A,N8,Resistohm 80, Stablohm 650,Nichorme V etc.

Mechanical Properties of nichrome wire

Max Continuous Service Temperature:	1250ºC
Resisivity 20ºC:	1.18 ohm mm2/m
Density:	8.1 g/cm3
Thermal Conductivity:	45.3KJ/m·h·ºC
Coefficient of Thermal Expansion:	17 α×10-6/ºC
Melting Point:	1380ºC
Elongation:	Min 20%
Micrographic Structure:	Austenite
Magnetic Property:	nonmagnetic

Temperature Factors Of Electrical Resistivity

20ºC	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
1	1.006	1.012	1.018	1.025	1.026	1.018
700ºC	800ºC	900ºC	1000ºC	1100ºC	1200ºC	1300ºC
1.01	1.008	1.01	1.014	1.021	1.025	-