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Brand Name : Senphus
Model Number : 6J40/6J40X/6J40P/6J40D
Place of Origin : China
MOQ : 5kg
Price : --
Payment Terms : T/T, D/P
Supply Ability : 30 Tons per day
Delivery Time : 3 days
Packaging Details : Packed with waterproof paper or weave bag, into pallets or wooden case. Special packaging requirements can also be accommodated.
Place of Orig : Jiangsu, China
Type : Constantan
Application : Variable Resistor and Strain Sensor
Color : Silvery White
Certification : ISO9001
Product name : 6J40 Constantan Wire
Dessity : 8.9g/mm
Temp. Coeff. of resistance : -40~40
Max. working Temp. : 500
Elongation : ≥15
Tensile Strength : ≥390
6J40 Constantan Flat Wire for Precision Electronics and Scientific Applications
The 6J40 Constantan flat wire is a specific variant of Constantan, a copper-nickel alloy widely used for its stable electrical resistance and other key properties. This flat wire version is especially used in precision applications such as thermocouples, strain gauges, and resistive elements.
The 6J40 Constantan flat wire is a versatile and reliable material known for its stable electrical resistance, low temperature coefficient, and durability. These key features make it suitable for precision temperature measurement, resistors, strain gauges, and heating elements. Its corrosion resistance, non-magnetic properties, and ability to perform consistently in a wide range of temperatures make it an ideal choice for high-performance applications in industries like electronics, industrial sensors, and scientific instrumentation.
Chemical composition
Name | Code | Main Composition(%) | Density | |||
Cu | Mn | Ni | Cr | g/mm2 | ||
Constantan | 6J40 | Bal. | 1~2 | 39~41 | -- | 8.9 |
Properties
Name | Code | Resistivity(20℃)(μΩm) | Temp.Coeff.Of Resistance (20℃)(α×10-6/℃) | (0~100℃) Thermal EMF vs. Copper (μv/℃) | Max. Working Temp. (℃) | Elongation(%) | Tensile Strength(N/mm2) |
Constantan | 6J40 | 0.48±0.03 | -40~+40 | 45 | ≤500 | ≥15 | ≥390 |
Diameter and Tolerance
Diameter | 0.02~0.028 | 0.032~0.10 | 0.112~0.28 | 0.315~0.50 | 0.56~1.0 | 1.06~1.60 | 1.70~2.12 | 2.24~3.00 | 3.15~4.50 |
Tolerance | ±0.002 | ±0.003 | ±0.005 | ±0.010 | ±0.015 | ±0.020 | ±0.025 | ±0.030 | ±0.035 |
Some key features of 6J40 include:
Applications:
Constantan (6J40) Technical data of wires
Dia(m) | Cross-sectional area(m²) | Weight/m (g/m) | Resistance/m at 20℃(Ω/m) | Dia(m) | Cross-sectional area(m²) | Weight/m (g/m) | Resistance/m at 20℃(Ω/m) |
0.020 | 0.000314 | 0.00279 | 1375-1681 | 0.224 | 0.03941 | 0.350 | 11.4-12.9 |
0.022 | 0.000318 | 0.00337 | 1136-1389 | 0.250 | 0.04909 | 0.436 | 9.19-10.37 |
0.025 | 0.000491 | 0.00434 | 880-1076 | 0.280 | 0.06158 | 0.5468 | 7.33-8.26 |
0.028 | 0.000616 | 0.00547 | 702-857 | 0.315 | 0.07793 | 0.6920 | 5.85-6.47 |
0.032 | 0.000804 | 0.00714 | 549-645 | 0.355 | 0.09898 | 0.8789 | 4.61-5.09 |
0.036 | 0.001018 | 0.00904 | 434-509 | 0.400 | 0.12570 | 1.116 | 3.63-4.01 |
0.040 | 0.001257 | 0.01116 | 351-413 | 0.450 | 0.15900 | 1.412 | 2.87-3.17 |
0.045 | 0.001509 | 0.01412 | 278-326 | 0.500 | 0.19630 | 1.744 | 2.32-2.57 |
0.050 | 0.001963 | 0.01744 | 225-264 | 0.560 | 0.24630 | 2.19 | 1.87-2.03 |
0.056 | 0.002463 | 0.02187 | 179-210 | 0.630 | 0.31170 | 2.77 | 1.48-1.60 |
0.063 | 0.003117 | 0.02768 | 142-166 | 0.710 | 0.39590 | 3.52 | 1.16-1.26 |
0.071 | 0.003959 | 0.03516 | 112-131 | 0.750 | 0.44180 | 3.92 | 1.04-1.13 |
0.080 | 0.005027 | 0.04464 | 87.9-103.1 | 0.800 | 0.50270 | 4.46 | 0.917-0.993 |
0.090 | 0.006362 | 0.05650 | 69.4-81.5 | 0.850 | 0.56740 | 5.04 | 0.812-0.880 |
0.100 | 0.007854 | 0.06970 | 56.2-66.0 | 0.900 | 0.63620 | 5.65 | 0.724-0.785 |
0.112 | 0.009852 | 0.08749 | 45.3-52.1 | 0.950 | 0.70880 | 6.29 | 0.650-0.704 |
0.125 | 0.012270 | 0.10900 | 36.4-41.9 | 1.000 | 0.78540 | 6.97 | 0.587-0.636 |
0.140 | 0.015390 | 0.13670 | 29.0-33.4 | 1.060 | 0.88250 | 7.84 | 0.522-0.566 |
0.150 | 0.017670 | 0.15690 | 25.3-29.1 | 1.120 | 0.98520 | 8.75 | 0.468-0.507 |
0.160 | 0.020110 | 0.17850 | 22.2-25.5 | 1.180 | 1.09400 | 9.71 | 0.421-0.456 |
0.170 | 0.022700 | 0.20160 | 19.7-22.6 | 1.250 | 1.22700 | 10.9 | 0.375-0.407 |
0.180 | 0.025450 | 0.22600 | 17.5-20.2 | 1.320 | 1.36800 | 12.15 | 0.337-0.365 |
0.190 | 0.028350 | 0.25200 | 15.7-18.1 | 1.400 | 1.53900 | 13.67 | 0.299-0.324 |
0.200 | 0.031420 | 0.27900 | 14.4-16.2 | 1.500 | 1.76700 | 15.69 | 0.261-0.282 |
0.212 | 0.035300 | 0.31350 | 12.8-14.4 | 1.600 | 2.01100 | 17.86 | 0.229-0.248 |
Constantan strip resistance value (Ω/m)
Width Thickness |
6.3 | 8.0 | 10.0 | 12.5 | 16.0 | 20.0 | 25.0 | 31.5 | 40.0 |
0.180 | 0.150 | ||||||||
0.200 | 0.405 | ||||||||
0.224 | 0.362 | 0.2850 | |||||||
0.250 | 0.324 | 0.2550 | 0.196 | ||||||
0.280 | 0.289 | 0.2280 | 0.175 | ||||||
0.315 | 0.257 | 0.2030 | 0.155 | 0.124 | |||||
0.355 | 0.228 | 0.1800 | 0.138 | 0.110 | |||||
0.400 | 0.203 | 0.1600 | 0.122 | 0.980 | 0.0765 | ||||
0.450 | 0.180 | 0.1420 | 0.109 | 0.0871 | 0.0680 | 0.0544 | 0.0435 | ||
0.500 | 0.162 | 0.1280 | 0.098 | 0.0784 | 0.0612 | 0.0490 | 0.0392 | ||
0.560 | 0.145 | 0.1140 | 0.0875 | 0.0700 | 0.0547 | 0.0437 | 0.0350 | ||
0.630 | 0.129 | 0.1010 | 0.0777 | 0.0622 | 0.0486 | 0.0389 | 0.0311 | ||
0.710 | 0.114 | 0.0900 | 0.0690 | 0.0552 | 0.0431 | 0.0345 | 0.0276 | ||
0.800 | 0.101 | 0.0800 | 0.0612 | 0.0490 | 0.0383 | 0.0306 | 0.0245 | 0.0194 | 0.0153 |
0.900 | 0.090 | 0.0710 | 0.0544 | 0.0435 | 0.0340 | 0.0272 | 0.0218 | 0.0173 | 0.0136 |
1.000 | 0.081 | 0.0640 | 0.0490 | 0.0392 | 0.0306 | 0.0245 | 0.0196 | 0.0155 | 0.0122 |
1.120 | 0.072 | 0.0570 | 0.0437 | 0.0350 | 0.0273 | 0.0219 | 0.0175 | 0.0139 | 0.0109 |
1.250 | 0.065 | 0.0510 | 0.0392 | 0.0313 | 0.0245 | 0.0196 | 0.0157 | 0.0124 | 0.0098 |
1.400 | 0.058 | 0.0460 | 0.0350 | 0.0280 | 0.0219 | 0.0175 | 0.0140 | 0.0111 | 0.0088 |
1.600 | 0.051 | 0.0400 | 0.0306 | 0.0245 | 0.0191 | 0.0153 | 0.0122 | 0.0097 | 0.0077 |
1.800 | 0.045 | 0.0350 | 0.0272 | 0.0218 | 0.0170 | 0.0136 | 0.0109 | 0.0086 | 0.00680 |
2.000 | 0.041 | 0.0320 | 0.0245 | 0.0196 | 0.0153 | 0.0122 | 0.0098 | 0.0078 | 0.0061 |
Constantan&Manganin wire table
Dia.(mm) | Sectional area nominal value(mm2) | Resistance per meter (Ω/m) | ||||||||
6J12X | 6J8X | 6J13X | 6J40X | |||||||
Nominal value(mm) | Tolerance | Nominal value (Ω/m) | Tolerance | Nominal value (Ω/m) | Tolerance | Nominal value (Ω/m) | Tolerance | Nominal value (Ω/m) | Tolerance | |
0.020 | ±0.002 | 0.000314 | 1496 | ±10% | 1528 | ±10% | ||||
0.022 | 0.000380 | 1236 | 1263 | |||||||
0.025 | 0.000491 | 957 | 978 | |||||||
0.028 | 0.000616 | 763 | 780 | |||||||
0.032 | ±0.003 | 0.000804 | 584 | ±8% | ±8% | ±8% | 597 | ±8% | ||
0.036 | 0.001018 | 462 | 472 | |||||||
0.040 | 0.001257 | 374 | 382 | |||||||
0.045 | 0.001590 | 296 | 302 | |||||||
0.050 | 0.001963 | 239 | 244 | |||||||
0.056 | 0.002463 | 191 | 195 | |||||||
0.063 | 0.003117 | 151 | 154 | |||||||
0.071 | 0.003959 | 119 | 121 | |||||||
0.080 | 0.005027 | 93.5 | 69.6 | 87.5 | 95.5 | |||||
0.090 | 0.006362 | 73.9 | 55.0 | 69.2 | 75.5 | |||||
0.100 | 0.007854 | 59.8 | 44.6 | 56.0 | 61.1 | |||||
0.112 | ±0.005 | 0.009852 | 47.7 | ±7% | 35.5 | ±7% | 44.7 | ±7% | 48.7 | ±7% |
0.125 | 0.01227 | 38.3 | 28.5 | 35.9 | 39.1 | |||||
0.140 | 0.01539 | 30.5 | 22.7 | 28.6 | 31.2 | |||||
0.160 | 0.02011 | 23.4 | 17.4 | 21.9 | 23.9 | |||||
0.180 | 0.02545 | 18.5 | 13.8 | 17.3 | 18.9 | |||||
0.200 | ±0.005 | 0.03142 | 15.0 | ±6% | 11.1 | ±6% | 14.0 | ±6% | 15.3 | ±6% |
0.224 | 0.03941 | 11.9 | 8.88 | 11.2 | 12.2 | |||||
0.250 | 0.04909 | 9.57 | 7.13 | 8.96 | 9.78 | |||||
0.280 | 0.06158 | 7.63 | 5.68 | 7.15 | 7.80 | |||||
0.315 | ±0.010 | 0.007793 | 6.03 | ±5% | 4.49 | ±5% | 5.65 | ±5% | 6.16 | ±5% |
0.355 | 0.09898 | 4.75 | 3.54 | 4.45 | 4.85 | |||||
0.400 | 0.1257 | 3.74 | 2.79 | 3.50 | 3.82 | |||||
0.450 | 0.1590 | 2.96 | 2.20 | 2.77 | 3.02 | |||||
0.500 | ±0.015 | 0.1963 | 2.39 | ±4% | 1.78 | ±4% | 2.24 | ±4% | 2.44 | ±4% |
0.560 | 0.2463 | 1.91 | 1.42 | 1.79 | 1.95 | |||||
0.630 | 0.3117 | 1.51 | 1.12 | 1.41 | 1.51 | |||||
0.710 | 0.3959 | 1.19 | 0.884 | 1.11 | 1.21 | |||||
0.750 | 0.4418 | 1.06 | 0.792 | 1.00 | 1.09 | |||||
0.800 | 0.5027 | 0.935 | 0.696 | 0.875 | 0.955 | |||||
0.850 | 0.5674 | 0.828 | 0.617 | 0.775 | 0.846 | |||||
0.900 | 0.6362 | 0.739 | 0.550 | 0.692 | 0.755 | |||||
0.950 | 0.7088 | 0.663 | 0.494 | 0.621 | 0.677 | |||||
1.000 | 0.7854 | 0.598 | 0.446 | 0.560 | 0.611 | |||||
1.060 | ±0.020 | 0.8852 | 0.533 | ±4% | 0.397 | ±4% | 0.499 | ±4% | 0.544 | ±4% |
1.120 | 0.9852 | 0.477 | 0.355 | 0.447 | 0.487 | |||||
1.180 | 1.094 | 0.430 | 0.320 | 0.402 | 0.439 | |||||
1.250 | 1.227 | 0.383 | 0.285 | 0.359 | 0.391 | |||||
1.320 | 1.368 | 0.343 | 0.256 | 0.322 | 0.351 | |||||
1.400 | 1.539 | 0.305 | 0.227 | 0.286 | 0.312 | |||||
1.500 | 1.767 | 0.266 | 0.198 | 0.249 | 0.272 | |||||
1.600 | 2.011 | 0.234 | 0.174 | 0.219 | 0.239 | |||||
1.700 | ±0.025 | 2.270 | 0.207 | ±4% | 0.154 | ±4% | 0.194 | ±4% | 0.211 | ±4% |
1.800 | 2.545 | 0.185 | 0.138 | 0.173 | 0.189 | |||||
1.900 | 2.835 | 0.166 | 0.123 | 0.155 | 0.169 | |||||
2.000 | 3.142 | 0.15 | 0.111 | 0.140 | 0.153 | |||||
2.120 | 3.530 | 0.133 | 0.0992 | 0.125 | 0.136 | |||||
2.240 | ±0.030 | 3.941 | 0.119 | ±4% | 0.0888 | ±4% | 0.112 | ±4% | 0.122 | ±4% |
2.360 | 4.374 | 0.107 | 0.0800 | 0.101 | 0.110 | |||||
2.500 | 4.909 | 0.0957 | 0.0713 | 0.0896 | 0.0978 | |||||
2.650 | 5.515 | 0.0852 | 0.0635 | 0.0798 | 0.0870 | |||||
2.800 | 6.158 | 0.0763 | 0.0568 | 0.0715 | 0.0780 | |||||
3.000 | 7.069 | 0.0665 | 0.0495 | 0.0622 | 0.0679 | |||||
3.150 | ±0.035 | 7.793 | 0.0603 | ±4% | 0.0449 | ±4% | 0.0565 | ±4% | 0.0616 | ±4% |
3.350 | 8.814 | 0.0533 | 0.0397 | 0.0499 | 0.0545 | |||||
3.550 | 9.898 | 0.0475 | 0.0354 | 0.0445 | 0.0485 | |||||
3.750 | 11.04 | 0.0426 | 0.0317 | 0.0398 | 0.0435 | |||||
4.000 | 12.57 | 0.0374 | 0.0279 | 0.0350 | 0.0382 | |||||
4.250 | 14.19 | 0.0331 | 0.0247 | 0.0310 | 0.0338 | |||||
4.500 | 15.90 | 0.0296 | 0.0220 | 0.0277 | 0.0302 | |||||
4.750 | ±0.040 | 17.72 | 0.0265 | ±4% | 0.0198 | ±4% | 0.0248 | ±4% | 0.0271 | ±4% |
5.000 | 19.63 | 0.0239 | 0.0178 | 0.0224 | 0.0244 | |||||
5.300 | ±0.050 | 22.06 | 0.0213 | ±4% | 0.0159 | ±4% | 0.0199 | ±4% | 0.0218 | ±4% |
5.600 | 24.63 | 0.0191 | 0.0142 | 0.0179 | 0.0195 | |||||
6.000 | ±0.060 | 28.27 | 0.0166 | ±4% | 0.0124 | ±4% | 0.0156 | ±4% | 0.017 | ±4% |
6.300 | 31.17 | 0.0151 | 0.0112 | 0.0141 | 0.0154 |
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6J40 Constantan Flat Wire For Precision Electronics And Scientific Applications Images |