Cr30ni70 Film for Double Strip Coils Braking Resistor

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Model NO.: Ni70cr30 Strip
• Alloy: Alloy
• Type: Resistance Alloy
• Powder: Not Powder
• The Highest Use Temperature: 1250c
• Resisivity: 1.18
• Density: 8.1g/cm3
• Melting Point: 1380
• Magnetic Properties: Non-Magnetic
• Width: 5-200mm
• Thickness: 0.1-3mm
• Sample: Free
• Surface: Bright
• OEM: Yes
• State: Soft or Hard or Half Hard
• Transport Package: Wooden Cases or Cartons
• Specification: (0.7mm-1.0mm)*(5mm-200mm)
• Trademark: Huona
• Origin: China
• HS Code: 7506200000
• Production Capacity: 2000ton/Year

Product Description

Cr30ni70 Film for Double Strip Coils Braking Resistor

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

Density (g/cm3)	8.1
Electrical resistivity at 20ºC(mm2/m)	1.18

 

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