RESISTANCE WIRE
Resistance wires are manufactured in our full range of materials with nickel alloys (or alternatives) available upon request. Wire can be supplied to meet both the resistance and mechanical properties required by customer specifications.
Typical applications for resistance wires produced are
- Electrofusion fittings
- Under-floor heating cables
- Under-ground heating
- Electrical blankets
- Industrial heating systems
Resistance Wire Product Range
Phosphor Bronze wires
Composition | CuSn5 | CuSn6 | CuSn1 |
---|---|---|---|
Copper | Balance | Balance | Balance |
Tin | 4.5 – 5.5% | 5.5 – 6.5% | 0.5 – 1.0% |
Phosphorus | 0.01 – 0.4% | 0.01 – 0.4% | 0.01 – 0.4% |
Properties | CuSn5 | CuSn6 | CuSn1 |
Resistivity at 20oC | 0.100 Ω x mm2 /m | 0.1408 Ω x mm2 /m | 0.030 Ω x mm2 /m |
Temperature coeff. of resistance | 0.0035 / 1oC > 20oC | 0.0065 / 1oC > 20oC | 0.0022 / 1oC > 20oC |
Density | 8.9 kg/m3 | 8.80 kg/m3 | 8.90 kg/m3 |
Tensile Strength | 300 – 550 N/mm2 | 450 – 1100 N/mm2 | 350 – 700 N/mm2 |
Elongation at soft temper | >25% | 30% | 30% |
Brass wires
Properties | CuZn5 | CuZn10 | CuZn15 | CuZn20 | CuZn30 | CuZn37 |
---|---|---|---|---|---|---|
Copper | 95% | 89.0-91.0% | 84.0-86.0% | 79.0-81.0% | 69.0-71.0% | 62.0-64.0% |
Zinc | 5% | Balance | Balance | Balance | Balance | Balance |
Properties | CuZn5 | CuZn10 | CuZn15 | CuZn20 | CuZn30 | CuZn37 |
Resistivity at 20oC |
0.04 Ω x mm2 /m | 0.04 Ω x mm2 /m | 0.048 Ω x mm2 /m | 0.053 Ω x mm2 /m | 0.0625 Ω x mm2 /m | 0.067 Ω x mm2 /m |
Temperature coeff. of resistance |
0.003 / 1oC > 20oC | 0.003 / 1oC > 20oC | 0.0028 / 1oC > 20oC | 0.0025 / 1oC > 20oC | 0.002 / 1oC > 20oC | 0.0015 / 1oC > 20oC |
Density | 8.80 kg/m3 | 8.80 kg/m3 | 8.80 kg/m3 | 8.70 kg/m3 | 8.50 kg/m3 | 8.40 kg/m3 |
Tensile Strength |
350 - 600 N/mm2 | 350 - 600 N/mm2 | 350 - 700 N/mm2 | 350 - 700 N/mm2 | 400 - 850 N/mm2 | 350 - 600 N/mm2 |
Elongation at soft temper |
30% | 30% | 35% | 35% | 35% | 35% |
Nickel Silver wires
Composition | CuNi12Zn24 | CuNi18Zn20 |
---|---|---|
Copper | 63-66% | 60-63% |
Nickel | 11 – 13% | 17 – 19% |
Zinc | Balance | Balance |
Composition | CuNi12Zn24 | CuNi18Zn20 |
---|---|---|
Resistivity at 20o C | 0.23 Ω x mm2 /m | 0.32 Ω x mm2 /m |
Density | 8.70 kg/m3 | 8.70 kg/m3 |
Tensile Strength | 500 - 850 N/mm2 | 500 - 880 N/mm2 |
Elongation at soft temper | 30% | 30% |
Copper wires
Composition | OFCU |
---|---|
Copper | >99.99% |
Properties | OFCU |
---|---|
Resistivity at 20oC | 0.0172 Ω x mm2 /m |
Temperature coeff. of resistance | 0.00393 / 1oC > 20oC |
Density | 8.90 kg/m3 |
Tensile Strength | 250 - 450 N/mm2 |
Elongation at soft temper | 35% |
Aluminium wires
Other aluminium alloys are available upon request
Composition | AlMg5 |
---|---|
Aluminium | Balance |
Magnesium | 4.8-6.5% |
Properties | AlMg5 |
---|---|
Resistivity at 20oC | 0.0615 Ω x mm2 /m |
Density | 2.64 kg/m3 |
Tensile Strength | 250 - 450 N/mm2 |
Elongation at soft temper | 17% |
Copper Nickel Alloys
Composition | CuNi1 | CuNi2 | CuNi6 | CuNi10 | CuNi15 | CuNi25 | CuNi44 (Constantan) |
---|---|---|---|---|---|---|---|
Copper | 99% | 98% | 94% | 90% | 85% | 75% | 66% |
Nickel | 1% | 2% | 6% | 10% | 15% | 25% | 44% |
Properties | CuNi1 | CuNi2 | CuNi6 | CuNi10 | CuNi15 | CuNi25 | CuNi44 (Constantan) |
---|---|---|---|---|---|---|---|
Resistivity at 20oC |
0.0256 Ω x mm2 /m | 0.0435 Ω x mm2 /m | 0.0926 Ω x mm2 /m | 0.1429 Ω x mm2 /m | 0.21 Ω x mm2 /m | 0.34 Ω x mm2 /m | 0.49 Ω x mm2 /m |
Temperature coeff. of resistance |
0.003 / 1oC > 20oC |
0.0013 / 1oC > 20oC |
0.0007 / 1oC > 20oC |
0.00063 / 1oC > 20oC |
0.00035 / 1oC > 20oC |
0.0002 / 1oC > 20oC |
0.00004 / 1oC > 20oC |
Density | 8.9 kg/m3 | 8.9 kg/m3 | 8.9 kg/m3 | 8.9 kg/m3 | 8.9 kg/m3 | 8.9 kg/m3 | 8.9 kg/m3 |
Tensile Strength |
230 – 330 N/mm2 | 240 – 340 N/mm2 | 250 – 350 N/mm2 | 300 – 400 N/mm2 | 320 – 420 N/mm2 | 350 – 450 N/mm2 | 350 – 450 N/mm2 |
Elongation at soft temper |
>25% | >25% | >25% | >25% | >25% | >25% | >25% |
Pure Nickel and other Nickel Alloys
Composition | Nickel 201 | NiMn2 | 80/20 NiCr |
---|---|---|---|
Nickel | 98% | 98% | 80% |
Iron (Fe) | 0.40% | 0.06% | |
Copper | 0.25% | ||
Manganese (Mn) | 1.8% | ||
Chrome (Cr) | 20% | ||
Others Total | <0.02% | Balance |
Properties | Nickel 201 | NiMn2 | 80/20 NiCr |
---|---|---|---|
Resistivity at 20oC | 0.085 Ω x mm2 /m | 0.109 Ω x mm2 /m | 1.09 Ω x mm2 /m |
Temperature coeff. of resistance | 0.0050 / 1oC > 20oC | 0.0041 / 1oC > 20oC | 0.0001 / 1oC > 20oC |
Density | 8.9 kg/m3 | 8.81 kg/m3 | 8.4 kg/m3 |
Tensile Strength | 450 – 550 N/mm2 | 450 – 550 N/mm2 | 600 – 700 N/mm2 |
Elongation at soft temper | >25% | >25% | >25% |
Bercotherm Resistance Wire Range
Within the UK Chaplin Bros can offer Bedra’s Becotherm range of resistance wire which are often a cheaper alternative to nickel alloy wires.
Please contact us for more details.
Properties | Bercotherm A4 | Bercotherm SO,4 | Bercotherm S2 | Bercotherm S3 | Bercotherm S4 | Bercotherm S7 |
---|---|---|---|---|---|---|
Density | 8,3 kg/dm3 | 8,9 kg/dm3 | 8,7 kg/dm3 | 8,5 kg/dm3 | 8,9 kg/dm3 | 8,4 kg/dm3 |
Conductivity hard | 9,1 MS / m | 39 MS / m | 4,9 MS / m | 3,9 MS / m | 18,5 MS / m | 2,2 MS / m |
Conductivity soft | 10,6 MS / m | 41 MS / m | 5,1 MS / m | 4 MS / m | 18,7 MS / m | 2,3 MS / m |
Temp.coeff. of resistance | 0,06 % / K | 0,26 % / K | 0,0357 % / K | 0,0303 % / K | 0,128 % / K | 0,0025 % / K |
Resistivity hard | 0,1099 Ω x mm2 /m | 0,0256 Ω x mm2 /m | 0,2041 Ω x mm2 /m | 0,2564 Ω x mm2 /m | 0,0541 Ω x mm2 /m | 0,4545 Ω x mm2 /m |
Resistivity soft | 0,0943 Ω x mm2 /m | 0,0244 Ω x mm2 /m | 0,1961 Ω x mm2 /m | 0,2500 Ω x mm2 /m | 0,0535 Ω x mm2 /m | 0,4348 Ω x mm2 /m |
Tensile strength hard | 950 N / mm˛ | 800 N / mm˛ | 1000 N / mm˛ | 1000 N / mm˛ | 730 N / mm˛ | 1100 N / mm˛ |
Tensile strength soft | 500 N / mm˛ | 450 N / mm˛ | 420 N / mm˛ | 520 N / mm˛ | 340 N / mm˛ | 520 N / mm˛ |
Properties | Bercotherm S10 | Bercotherm 12 | Bercotherm 18 |
---|---|---|---|
Density | 8,5 kg/dm3 | 8,65 kg/dm3 | 8,75 kg/dm3 |
Conductivity hard | 4,9 MS / m | 4,6 MS / m | 3,6 MS / m |
Conductivity soft | 5,2 MS / m | 4,8 MS / m | 3,55 MS / m |
Temp.coeff. of resistance | 0,045 % / K | 0,0416 % / K | 0,031 % / K |
Resistivity hard | 0,2041 Ω x mm2 /m | 0,2174 Ω x mm2 /m | 0,2778 Ω x mm2 /m |
Resistivity soft | 0,1923 Ω x mm2 /m | 0,2083 Ω x mm2 /m | 0,2817 Ω x mm2 /m |
Tensile strength hard | 1000 N / mm˛ | 1100 N / mm˛ | 1100 N / mm˛ |
Tensile strength soft | 530 N / mm˛ | 520 N / mm˛ | 500 N / mm˛ |
Read about Packaging Options for our Wire