Nichrome Stranded Resistance Heating Wire
We have developed a range of stranded resistance wires in the FeCrAl alloys, Nichrome alloys and other Nickel alloys. They are widely used as more precisely controlled stranded wire within the cable industry. These alloys possess the optimum properties for high performance at elevated temperatures and in other adverse conditions where reliability and quality is of paramount consideration.
Stranded Resistance Heating Wire Properties:
Stranded Resistance Heating Wire Properties:
Alloy | Nominal Composition, % | Resistivity at 20°C | Max. temp°C | |||||||
Ni | Cr | Fe | Al | Oth | ||||||
Nichrome Ni80Cr20 | 80 | 20 | 1.09Ωmm2/m | 1250 | ||||||
Nichrome Ni60Cr15 | 60 | 16 | Bal | 1.11Ωmm2/m | 1150 | |||||
FeCrAl S1 | 6 | Bal | 25 | 1.45Ωmm2/m | 1450 | |||||
FeCrAl 0Cr25Al5 | 5 | Bal | 25 | 1.42Ωmm2/m | 1250 | |||||
Stranded Resistance Heating Wire diameters:
Nominal diameter to be determined from single-end wire diameters, which have to meet resistance requirements. Resistance generally takes priority over diameter.
The calculation is:
Strand normal diameter = single-end diameter x F
F=3 for 7-strand
F=5 for 19-strand true concentric
F=7 for 37-strand true concentric
Size range
Up to 37 wires (ends) of diameter between 0.20-0.85 mm.
Flex Size | |||||
V. Small | Small | Medium | Large | X. Large | |
Flex Ø, mm | 2.3 | 3.75 | 4.2 | 6.7 | 9.3 |
Strands | 7 x 0.76 mm | 19 x 0.75 mm | 19 x 0.85 mm | 49 x 0.75 mm | 49 x 1.00 mm |
Weight, gram/m | 26.24 | 70 | 86 | 184 | 325 |
Current, A (<400 °C) | 7 | 15 | 22 | 44 | 77 |
Current, A (>400 °C) | 5 | 15 | 20 | 30 | 45 |
Ω/m, cold | 0.347 | 0.106 | 0.102 | 0.05 | 0.028 |
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