Nickel alloy strip (Cr30Ni70) Electrical resistivity alloy

Model NO.: Cr30Ni70 Material: Ni-Cr Alloys product name: Nickel-chromium alloy resistivity: 1.18 Trademark: TANKII Specification: RoHS HS Code: 7505220000 Product Type: Wire Carbon Content: Low Carbon use: Resistance materials density: 8.1 Transport Package: Spool, Carton, Wooden Case Origin: Tankii, China
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
Maximal 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

 
 
 
Our Nichrome alloy are in the form of wire, ribbon, strip, coil.
 
Round wire
Ribbon (flat wire)
Strip / foil
Stranded wire
Sheet / plate
 
Delivery conditions are:  
Bright annealed
Oxidized
Pickled
Enameled
 
 Our major product line:
 l Electric resistance alloy materials in wire, strip, tube, and bar form.
l Furnace products and heating systems: 
Metalic heating elements
Heating modules: Prefabricated heating modules with electric heating elements and fiber or dense ceramic insulation.
Air heating cassettes: Cassettes with metallic heating elements for heating of air or gases
Diffusion Cassettes: Diffusion cassettes for the production of crystalline silicon wafers for solar cells and semiconductors
Furnace tubes: Extruded tubes made from FeCrAl alloys for gas-heated or electrically heated furnaces.
Construction materials: Wire, strip, tube and bar for manufacturing of furnace furniture and other furnace accessories
Furnace rollers: Furnace rollers for heat treatment furnaces.
Resistance heating wire and strip.: Resistance heating wire and strip for manufacturing of electric heating elements.
Technical Ceramics: Ceramic supporting materials for electrothermal components.
Thermocouple wire and strip: Wire, ribbon and strip for thermocouples, extension leads and compensating cables.
Ceramic engineering material: Ceramic engineering material for high-temperature and chemical environments.
Electric heating systems: Electric heating systems for aluminium and steel production
 
 
 
 

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