Nichrome 30
Nichrome 30 is an austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1100℃.
Equivalent Grades
Trademarks | GB | JIS | ASTM | UNS | DIN | W-Nr. | ГОСТ | BS | NF | SS |
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Nikrothal 30 Nichrome 30 Gilphy 40 | Cr20Ni30 | – | Nichrome 30 | – | NiCr30 20 | 1.4860 | Х20Н30 | – | – | – |
Specifications
GB/T 1234-1995 (CN); JIS C2520-199(JP); ASTM B344-01(USA); DIN 17470-1984(GER); GOST 10994 & GOST 12766/1-1990 (RU)
Product Forms
Wire, Bar, Strip, Sheet, Tube, Mesh, Conveyor belt, Radiant tube heater
Chemical Composition, %
Alloy | C | Si | Mn | P | S | Cr | Ni | Al | Fe |
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Nichrome 30 | ≤0.08 | 1.0~2.0 | ≤1.0 | ≤0.02 | ≤0.015 | 18.0~21.0 | 30.0~34.0 | – | Bal |
Mechanical Properties (RT, Annealed)
Tensile Strength, Rm/MPa | Elongation, A/% |
---|
Dia. >3.00mm (for wire) | Dia. 0.10~3.00mm (for wire) and Th. >0.20 (for strip) |
≥600 | ≥25 | ≥20 |
Physical Properties
Max Working Temperature, ℃ | Melting Point, ℃ | Density, g/cm3 | Resistivity, μΩ·m, 20℃ | Specific Heat, J/g·℃ | Thermal Conductivity, KJ/m·h·℃ | Average Coefficient of Linear Expansion, α×10-6/℃ (20~1000℃) | Micrographic Structure | Magnetic Properties |
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1100 | 1390 | 7.90 | 1.04 | 0.500 | 43.8 | 19.0 | Austenitie | Weak-Magnetic |
Life Test
Test Temperature, ℃ | Continuous Service Time Hours, ℃ |
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1100 | ≥80 |
Temperature Factor of Resistivity
20℃ | 100℃ | 200℃ | 300℃ | 400℃ | 500℃ | 600℃ | 700℃ | 800℃ | 900℃ | 1000℃ | 1100℃ | 1200℃ | 1300℃ |
---|
1.000 | 1.023 | 1.052 | 1.079 | 1.103 | 1.125 | 1.141 | 1.158 | 1.173 | 1.187 | 1.201 | 1.214 | 1.226 | – |
Features
- High resistivity
- Good oxidation resistance
- Good ducility after use
- Excellent weldability
- Relatively low price compared with other Nichrome alloys
Applications
- Solid hot plates
- Open coil heaters in HVAC systems
- Nigh-storage heaters
- Convection heaters
- Heavy duty rheostats
- Fan heaters
- Heating cables and rope heaters in defrosting and deicing elements
- Electric blankets and pads
- Car seats
- Baseboard heaters
- Floor heaters
- Resistors