Nickel Chrome/Chromium Nichrome 70 30 Nicr 70/30 Chromel/Alumel Heating/Resistance Alloy Strip (Ni80Cr20/Ni70Cr30/Ni60Cr15/Ni35Cr20/Ni30Cr20)

Basic Info

Model NO.	Ni70cr30 Strip
The Highest Use Temperature	1250c
Resisivity	1.18
Density	8.1g/cm3
OEM	Yes
Sample	Free
Surface	Bright
Thickness	0.05-2.5mm
Width	5-250mm
Melting Point	1380
Transport Package	Wooden Cases or Cartons
Specification	0.05mm-2.5mm
Trademark	Huona
Origin	China
HS Code	7506200000
Production Capacity	2000ton/Year

Product Description

Nickel Chrome/Chromium Nichrome 70 30 NICR 70/30 Chromel/Alumel heating/Resistance Alloy Strip (Ni80Cr20/Ni70Cr30/Ni60Cr15/Ni35Cr20/Ni30Cr20)

Ni70Cr30 is a nickel-chromium alloy (NiCr alloy) characterized by high resistivity, good oxidation resistance and very good form stability. It is suitable for use at temperatures up to 1250°C,and hold a superior service life compared to Iron chromium alumium alloys.Typical applications for Ni70Cr30 are electric heating elements in home appliances,industrial furnaces and resistors(wirewound resistors,metal film resistors), flat irons, ironing machines, water heaters, plastic moulding dies, soldering irons, metal sheathed tubular elements and cartridge elements.Normal composition%

C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
Max
0.03	0.02	0.015	0.60	0.75~1.60	28.0~31.0	Bal.	Max 0.50	Max 1.0	-

Typical Physical properties

C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
Max
0.03	0.02	0.015	0.60	0.75~1.60	28.0~31.0	Bal.	Max 0.50	Max 1.0	-

Coefficient of thermal expansion
Temperature	Coefficient of Thermal Expansion x10-6/ºC
20 ºC- 1000ºC	17

Specific heat capacity
Temperature	20ºC
J/gK	0.46

Melting point (ºC)	1380
Max continuous operating temperature in air (ºC)	1250
Magnetic properties	non-magnetic

Temperature Factors Of Electrical Resistivity
20ºC	100ºC	200ºC	300ºC	400ºC	600ºC
1	1.006	1.012	1.018	1.025	1.018
700ºC	800ºC	900ºC	1000ºC	1100ºC	1300ºC
1.01	1.008	1.01	1.014	1.021	-

Style of supply

Alloys Name	Type	Dimension
Ni70Cr30W	Wire	D=0.03mm~8mm
Ni70Cr30R	Ribbon	W=0.4~40	T=0.03~2.9mm
Ni70Cr30S	Strip	W=8~250mm	T=0.1~3.0
Ni70Cr30F	Foil	W=6~120mm	T=0.003~0.1
Ni70Cr30B	Bar	Dia=8~100mm	L=50~1000

Performance\ material		Cr10Ni90	Cr20Ni80	Cr30Ni70	Cr15Ni60	Cr20Ni35	Cr20Ni30
Composition	Ni	90	Rest	Rest	55.0~61.0	34.0~37.0	30.0~34.0
	Cr	10	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
Maximum temperatureºC		1300	1200	1250	1150	1100	1100
Meltiing point ºC		1400	1400	1380	1390	1390	1390
Density g/cm3		8.7	8.4	8.1	8.2	7.9	7.9
Resistivity at 20ºC((μΩ·m)			1.09±0.05	1.18±0.05	1.12±0.05	1.00±0.05	1.04±0.05
Elongation at rupture		≥20	≥20	≥20	≥20	≥20	≥20
Specific heatJ/g.ºC			0.44	0.461	0.494	0.5	0.5
Thermal conductivityKJ/m.hºC			60.3	45.2	45.2	43.8	43.8
Coefficient of lines expansiona×10-6/(20~1000ºC)			18	17	17	19	19
Micrographic structure			Austenite	Austenite	Austenite	Austenite	Austenite
Magnetic properties			Non-magnetic	Non-magnetic	Non-magnetic	Weak magnetic	Weak magnetic