Brand: ohmalloy
Price: USD 5 / Kilogram
Min. Order: 1 Kilogram
OhmAlloy104B
(Common Name:Ni30Cr20,Nikrothal 30, N3, HAI-NiCr 30, Resistohm 30,30-20 Ni-Cr,Nikrothal 3.) 
OhmAlloy104B is a nickel-chromium alloy (NiCr alloy) characterized by High resistivity, good oxidation resistance,very good form stability,good ductility and excellent weldability. It is suitable for use at temperatures up to 1100°C.
Typical applications for OhmAlloy104B are used in olid hot plates,open coil heaters in HVAC systems,night-storage heaters,convection heaters,heavy duty rheostats and fan heaters. And also used for heating cables and rope heaters in defrosting and de-icing elements,electric blankets and pads, car seats,baseboard heaters,floor heaters and resistors.

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 20℃(Ωmm2/m) 1.04
Conductivity coefficient at 20℃ (WmK) 13

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

Specific heat capacity
Temperature 20℃
J/gK 0.50
 
Melting point (℃) 1390
Max continuous operating temperature in air (℃) 1100
Magnetic properties non-magnetic
 
Temperature Factors Of Electrical Resistivity
20℃ 100℃ 200℃ 300℃ 400℃ 500℃ 600℃
1 1.023 1.052 1.079 1.103 1.125 1.141
700℃ 800℃ 900℃ 1000℃ 1100℃ 1200℃ 1300℃
1.158 1.173 1.187 1.201 1.214 1.226 -
 
Style of supply
Alloys Name Type Dimension
OhmAlloy104BW Wire D=0.03mm~8mm
OhmAlloy104BR Ribbon W=0.4~40 T=0.03~2.9mm
OhmAlloy104BS Strip W=8~250mm T=0.1~3.0
OhmAlloy104BF Foil W=6~120mm T=0.003~0.1
OhmAlloy104BB Bar Dia=8~100mm L=50~1000