Factory Price Nickel chrome alloy wire Ni70Cr30

• Product Type: Wire
• Material: Ni-Cr Alloys
• Carbon Content: Low Carbon
• PCD: -
• ET: -
• Hole: -
• Model NO.: Ni70Cr30
• product name: Nickel-chromium alloy
• use: Resistance materials
• resistivity: 1.18
• density: 8.1
• Diameter: 0.02mm Min.
• Surface: Bright Oxidation
• Transport Package: Spool, Carton, Wooden Case
• Specification: RoHS
• Trademark: TANKII
• Origin: Tankii, China
• HS Code: 7505220000
• Production Capacity: 300 Mt/Month

Product Description

Nickel chrome alloy wire Ni70Cr30

Cr30Ni70 Nichrome Alloy Eletrothermal Coil Strip,Sable Resistance For Heating Element,
 
NiCr70/30
 
Nickel chromium alloy with iron resistance electrothermal high resistivity, surface body sexual well. At high temperature and high intensity, 
and a good performance and processing may welding nature widely used metallurgical, electrical, mechanical components and electrical 
manufacturing industries for doing heat resistance material. 
 
NiCr Type:Cr20Ni80,Cr15Ni60, Cr20Ni35, Cr20Ni30, Cr25Ni20 etc.Series electric flat belt, electric fire wire.
 
3.Product size: 
 
Thickness : 0.02----4.0mm
Width:        2.5----250mm
Standard:GB1234-95
Bright and Smooth surface
 
Ni70Cr30
Chemical Content, %

C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
Max
0.08	0.02	0.015	0.60	0.75~1.60	28.0~31.0	Bal.	Max 0.50	Max 1.0	-

Mechanical Properties

Max Continuous Service Temperature:  Resisivity ( 20ºC)/Ω·m::   Density: Thermal Conductivity: Coefficient of Thermal Expansion: Melting Point: Elongation: Micrographic Structure: Magnetic Property:

1250ºC 1.18 +/-0.05 (Dia: <0.5mm) 1.20+/-0.05  (Dia: ≥0.50 mm) 8.1 g/cm3 45.2 KJ/m·h·ºC 17×10-6/ºC (20ºC~1000ºC) 1380ºC Min 20% Austenite nonmagnetic

 

Type		Cr20Ni80	Cr15Ni60	Cr30Ni70	Cr20Ni35	Cr20Ni30
Main chemical composition	Ni	Rest	55.0~61.0	Rest	34.0~37.0	30.0~34.0
	Cr	20.0~23.0	15.0~18.0	28.0~31.0	18.0~21.0	18.0~21.0
	Fe	≤1	Rest	≤1	Rest	Rest
Max.  Temperature(ºC)		1200	1150	1250	1100	1100
Resistance Temperature correction coefficient.(CT)		1.09±0.05	1.11±0.05	1.18±0.05	1.04±0.05	1.06±0.05
Melting point (ºC)		1400	1390	1380	1390	1390
Resistivityρ20ºC(10-6Ω.m)	800ºC	1.008	1.078	1.028	1.188	1.173
	1000ºC	1.014	1.095	1.033	1.219	1.201
	1200ºC	1.025		1.043
Fast life value	Tem.(ºC)	1175	1100	1200	1050	1050
	hour(h)	≥110	≥100	≥110	≥100	≥100
Specific gravity(g/cm3)		8.40	8.2	8.1	7.90	7.90
Elongation(%)		≥25	≥25	≥20	≥20	≥20
Thermal(kj/m.h.ºC)		60.3	45.2	45.2	43.8	43.8
Specific heat(20ºC)j/g.ºC		0.440	0.494	0.461	0.500	0.500
Extend strength(20~1000ºC)α*10-6ºC		18.0	17.0	17.1	19.0	19.0
Tensile strength(kg/mm2)		>85	>85	>85	>85	>85
Repeatedly bending(F/R)		>12	>12	>12	>12	>12
Microstructure		Austenitic	Austenitic	Austenitic	Austenitic	Austenitic