Common Name: Ni30Cr20,Nikrothal 30, N3, HAI-NiCr 30, Resistohm 30, 30-20 Ni-Cr, Nikrothal 3
Ni30Cr20 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 Ni30Cr20 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 | Thermal Expansion x10-6/K |
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
Type | Dimension |
Wire | D=0.03mm~8mm |
Ribbon | W=0.4~40 | T=0.03~2.9mm |
Strip | W=8~250mm | T=0.1~3.0 |
Foil | W=6~120mm | T=0.003~0.1 |
Bar | Dia=8~100mm | L=50~1000 |
