Nicr3020 NiCr3520 Bright and Soft Nichrome Strip

• Type: Bare
• Conductor Type: Solid
• Application: Heating
• Conductor Material: Nicrfe
• Insulation Material: Bare
• Certification: ISO9001, RoHS
• Model NO.: Nicr3020
• Color: Bright
• Width: max 400mm
• Coil Weight: max 1000kgs
• Transport Package: Spool, Carton, Wooden Case
• Specification: eg 0.25*60mm
• Trademark: TANKII
• Origin: China
• HS Code: 7506200000
• Production Capacity: 5000 Tons/Year

Product Description

Nicr3020 NiCr3520 Bright and Soft Nichrome Strip

It is a nickel-chromium heating conductor alloy for operating temperatures of up to 1150 °C and often contains additives of rare earths for a higher resistance to oxidation, especially with frequent switching operations or broad temperature variations.

The resistance to atmospheric corrosion at 20 °C is high up to the upper operating temperature the resistance to air and other oxygen-containing gases as well as to nitrogen-containing low-oxygen gases is high as well, yet it is low to oxidizing as well as reducing gases containing sulphur.

The resistance to carbonizing is high. Application for industrial electric furnaces, enamelling furnaces, household appliances, night-current storage space-heaters.
 
Normal composition%

C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
Max
0.08	0.02	0.015	1.00	1.0~2.0	18.0~21.0	30.0~34.0	-	Bal.	-

 
 
Typical Mechanical properties(1.0mm)

Yield strength	Tensile Strength	Elongation
Mpa	Mpa	%
340	675	35

 
Typical Physical properties

Density (g/cm3)	7.9
Electrical resistivity at 20ºC(Om*mm2/m)	1.04
Conductivity coefficient at 20ºC (WmK)	13

 

Coefficient of thermal expansion
Temperature	Coefficient of Thermal Expansion x10-6/ºC
20 ºC- 1000ºC	19

 
 

Specific heat capacity
Temperature	20ºC
J/gK	0.50

 

Melting point (ºC)	1390
Max continuous operating temperature in air (ºC)	1100
Magnetic properties	non-magnetic

 
Temperature Factors Of Electrical Resistivity

20ºC	100ºC	200ºC	300ºC	400ºC	500ºC	600ºC
1	1.023	1.052	1.079	1.103	1.125	1.141
700ºC	800ºC	900ºC	1000ºC	1100ºC	1200ºC	1300ºC
1.158	1.173	1.187	1.201	1.214	1.226	-

 

Chemical Composition and Propertes:
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 PointºC)		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

Chemical Composition	Nickel 80%, Chrome 20%
Condition	Bright/Acid white/Oxidied Color