Cr30Ni70 Nichrome Alloy Strip for Heating Element

• Customization: Available
• Product Type: Wire
• Material: Ni-Cr Alloys
• Model NO.: Cr30Ni70
• Carbon Content: Low Carbon
• features: High resistivity, surface oxidation resistance per
• use: Resistance materials
• highest temperature: 1250ºC
• Transport Package: Spool, Carton, Wooden Case
• Specification: RoHS
• Trademark: TANKII
• Origin: Tankii, China
• HS Code: 7505220000
• Production Capacity: 300 Mt/Month

Product Description

Cr30Ni70 Nichrome Alloy Eletrothermal Coil Strip,Sable Resistance For Heating Element,
 
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.
 
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	Austeniti

 
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