Ni30Cr20 Nichrome Alloy , Electric Heating Strip For Powe Resistor
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.
ichrome Grade: Ni70Cr30,Ni80Cr20, Ni60Cr15, Ni35Cr20, Ni30Cr20
Description:
Ni30Cr20 is a nickel-chromium alloy (NiCr alloy) for use at
temperatures up to 1200°C (2190°F). The alloy is characterized by
high resistivity, good oxidation resistance and very good form
stability. It has good ductility after use and excellent
weldability.
Ni30Cr20 is used for making electric heating elements in home
appliances and industrial furnaces. Typical applications are flat
irons, ironing machines, water heaters, plastic moulding dies,
soldering irons, metal sheathed tubular elements and cartridge
elements.
Chemical Composition & Property:
| Properties | Grade |
| Ni30Cr20 |
| Chemical composition % | Ni | 30.0~34.0 |
| Cr | 18.0~21.0 |
| Fe | Balance |
| Highest service temperature °C | 1100 |
| Melting point °C | 1390 |
| Density g/cm3 | 7.90 |
| Resistivity μΩ.m,20°C | 1.04 |
| Elongation % | ≥20 |
| Specific heat J/g.°C | 0.500 |
| Thermal conductivity KJ/m.h.°C | 43.8 |
| Coefficient of linear extensibility α×10-6/°C | 19.0 |
| Microstructure | Austenite |
| Magnetic property | nonmagnetic |
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 |
