Good Oxidation Resistance Nichrome Alloy Ni70cr30 for Porcelain Teeth

• Product Type: Wire
• Material: Nicr
• Carbon Content: Low Carbon
• PCD: 100mm
• Density (g/cm3): 8.2
• Elongation: 30%
• Model NO.: Ni70Cr30
• Transport Package: Wooden Box
• Specification: 0.03-8mm
• Trademark: ohmalloy
• Origin: Shanghai
• Production Capacity: 500000kg

Product Description

OhmAlloy118
(Common Name: Ni70Cr30, Nikrothal 70, N7, HAI-NiCr 70, Chromel 70/30, Resistohm 70, Balco,Tophet 30,Cronix 70,Alloy 710,Stablohm 710)

 

OhmAlloy118 is a nickel-chromium alloy (NiCr alloy) characterized byHigh resistivity, good oxidation resistance,very good form stability,good ductility and excellent weldability. It is suitable for use at temperatures up to 1250°C.

Typical applications for OhmAlloy118 are used in electrical heating elements in industrial furnace,and well suited for reducing atmospheres.

Normal composition%

C	P	S	Mn	Si	Cr	Ni	Al	Fe	Other
Max
0.05	0.02	0.015	0.60	0.75~1.60	28.0~31.0	Bal.	Max 0.50	Max 1.0	-

Typical Mechanical properties(1.0mm)

Yield strength	Tensile Strength	Elongation
Mpa	Mpa	%
430	820	30

 

Typical Physical properties

Density (g/cm^3)	8.2
Electrical resistivity at 20ºC(Ωmm^2/m)	1.18
Conductivity coefficient at 20ºC (WmK)	14

 

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	500ºC	600ºC
1	1.007	1.016	1.028	1.038	1.044	1.036
700ºC	800ºC	900ºC	1000ºC	1100ºC	1200ºC	1300ºC
1.03	1.028	1.029	1.033	1.037	1.043	-

 

Style of supply

Alloys Name	Type	Dimension
OhmAlloy118W	Wire	D=0.03mm~8mm
OhmAlloy118R	Ribbon	W=0.4~40	T=0.03~2.9mm
OhmAlloy118S	Strip	W=8~250mm	T=0.1~3.0
OhmAlloy118F	Foil	W=6~120mm	T=0.003~0.1
OhmAlloy118B	Bar	Dia=8~100mm	L=50~1000