Ohmalloy Material Co.,Ltd
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Outside diameter 3mm for Resistance Ceramic Pad Heaters Stranded Heating Wire
Stranded nichrome heating wire is mainly used for making heater pad with ceramic,and heating element repair kit etc.
Generally,the conductor will be Ni80Cr20,Ni60Cr15,and the wire comes from 7,19,37 multi-strands:
7=1+6
19=1+6+12
37=1+6+12+18
The conductor can be also other nichrome,FeCrAl,CuNi alloy,and the size can be custom produced.
Our Standard material,DIN 250 consist of 500meters per spool:
| Alloy | Nominal total diam.(mm) | Strand Construction (mm) | Resistance (Ohms/M) | |
| No. of strands x size | King wire size | |||
| Ni80Cr20 | 2.8 | 19*0.55 | 0.55 | 0.26 |
| Ni80Cr20 | 2.67 | 19*0.523 | 0.574 | 0.28 |
| Ni80Cr20 | 2.76 | 37*0.385 | 0.508 | 0.27 |
| Ni60Cr15 | 2.76 | 19*0.523 | 0.574 | 0.29 |
The Properties:
| Properties/Grade | Cr20Ni80 | Cr15Ni60 | |
| Main Chemical Composition(%) | Ni | Rest | 55.0-61.0 |
| Cr | 20.0-23.0 | 15.0-18.0 | |
| Fe | ≤ 1.0 | Rest | |
| Max Continuous Service Temperature(℃) | 1200 | 1150 | |
| Resistivity at 20℃(μ Ω · m) | 1.09 | 1.12 | |
| Density(g/cm3) | 8.4 | 8.2 | |
| Thermal Conductivity(KJ/m· h· ℃) | 60.3 | 45.2 | |
| Coefficient of Thermal Expansion(α × 10-6/℃) | 18 | 17 | |
| Specific Heat Capacity(J/g.K) | 0.46 | 0.46 | |
| Thermal Conductivity at 20℃(W/m.K) | 15 | 13 | |
| Melting Point(℃) | 1400 | 1390 | |
| Elongation(%) | > 20 | > 20 | |
| Micrographic Structure | austenite | austenite | |
| Magnetic Property | Non magnetic | Non magnetic | |
Material Available:
NiCr80/20, NiCr60/15, Nickel 212, NiMn2, CuNi44 or others