Micc Nickel Chrome Resistance Wire- Cr30ni70

• Type: Insulated
• Conductor Type: Stranded
• Application: Heating
• Conductor Material: Customized
• Sheath Material: Customized
• Insulation Material: Customized
• Model NO.: Resistance wire- Cr30Ni70
• Material Shape: Round Wire
• Range of Application: Industrial
• Certification: CE
• Brand: Micc
• Transport Package: Cartons
• Specification: Customized
• Trademark: MICC
• Origin: China

Product Description

Product Description:
Resistance wire(heating wire) used at operating temperatures up to 1200. Its chemical composition gives
good oxidation resistance especially under conditions of frequent switching or wide temperature fluctuations. 
 
Applications include heating elements in both domestic and industrial appliances and in control resistors.
Ni-Cr materials are widely used in industrial electric furnaces, household appliances and far-infrared devices
because of their high temperature strength and strong plasticity.


Technique parameter:
Main characteristics of Ni-Cr electric heating alloys 
 

Alloy Nomenclature/Performance		Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
Main Chemical  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
Max. continuous service temp. of element		1200	1250	1150	1100	1100
Resistivity at 20°C(μΩ·m)		1.09	1.18	1.12	1	1.04
Density (g/cm3)		8.4	8.1	8.2	7.9	7.9
Thermal conductivity(KJ/m·h·°C)		60.3	45.2	45.2	43.8	43.8
Coefficient of lines expansion(α×10-6/°C)		18	17	17	19	19
Melting point (approx.)( °C)		1400	1380	1390	1390	1390
Elongation at rupture (%)		>20	>20	>20	>20	>20
Micrographic structure		austenite	austenite	austenite	austenite	austenite
Magnetic properties		nonmagnetic	nonmagnetic	nonmagnetic	Weak magnetic	Weak magnetic