Product Description
Ni70Cr30 High Temperature Thermistor Resistance Alloy Plate
Ni70Cr30 is a nickel-chromium alloy (NiCr alloy) characterized by
high resistivity, good oxidation resistanceand very good form stability. It is suitable for use at temperatures up to 1250°C,and hold a
superior service life
compared to Iron chromium alumium alloys.
Typical applications for Ni70Cr30 are electric heating elements in
home appliances,industrial furnaces and resistors
(wirewound resistors,metal film resistors), flat irons, ironing
machines, water heaters, plastic moulding dies,
soldering irons, metal sheathed tubular elements and cartridge
elements.
Normal composition%
C | P | S | Mn | Si | Cr | Ni | Al | Fe | Other |
| Max |
| 0.03 | 0.02 | 0.015 | 0.60 | 0.75~1.60 | 28.0~31.0 | Bal. | Max 0.50 | Max 1.0 | - |
Density (g/cm3) | 8.1 |
| Electrical resistivity at 20ºC(mm2/m) | 1.18 |
| 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 | 600ºC |
| 1 | 1.006 | 1.012 | 1.018 | 1.025 | 1.018 |
| 700ºC | 800ºC | 900ºC | 1000ºC | 1100ºC | 1300ºC |
| 1.01 | 1.008 | 1.01 | 1.014 | 1.021 | - |
| Alloys Name | Type | Dimension |
| Ni70Cr30W | Wire | D=0.03mm~8mm |
| Ni70Cr30R | Ribbon | W=0.4~40 | T=0.03~2.9mm |
| Ni70Cr30S | Strip | W=8~250mm | T=0.1~3.0 |
| Ni70Cr30F | Foil | W=6~120mm | T=0.003~0.1 |
| Ni70Cr30B | Bar | Dia=8~100mm | L=50~1000 |
