6J40 Constantan Resistance Alloy Wire
6J40 Constantan Resistance Alloy Wire (product code PT-XHA-PRA-00030) is listed under Industrial Products & MRO > Special Alloys > Precision Alloys and supplied in Singapore by PANDA COLLECTIONS (PANDATEC PTE. LTD.), a B2B procurement partner for businesses. The copper-nickel alloy has a low temperature coefficient of resistance over a wide range (up to about 480 °C), good workability and solderability. Prices are quoted on request.
| Product code | PT-XHA-PRA-00030 |
|---|---|
| Category | Industrial Products & MRO > Special Alloys > Precision Alloys |
| Grade / designation | GB/T 2903 6J40 (CuNi40) |
| Product form | Wire |
| Applicable standards | GB/T 2903, ASTM B267 (comparable) (confirmed per order) |
| Available forms | Wire, strip, hot-rolled bar |
| Certificates | EN 10204 3.1 MTC on request |
| Minimum order | On request |
| Country of origin | China |
| Pricing | On request – customised quotation by PANDA COLLECTIONS |
| Supplied in | Singapore |
Product description
The copper-nickel alloy has a low temperature coefficient of resistance over a wide range (up to about 480 °C), good workability and solderability. PANDA COLLECTIONS sources 6J40 (Constantan) for buyers in Singapore and internationally for project and bulk orders. Mill test certificates to EN 10204 3.1, full heat traceability, melting route (e.g. ESR/VAR), heat-treatment condition and NDT/testing requirements are confirmed per enquiry. Prices are not listed online; every order is quoted individually based on grade, dimensions, quantity, testing and certification requirements.
Technical data
| Chemical composition (%) | Ni 39–41, Mn 1–2, Fe ≤0.5, C ≤0.10, Cu bal. |
|---|---|
| Mechanical properties | Rm ≥280 MPa, A5 ≥15 % |
| Physical properties | Density 8.9 g/cm³; resistivity 0.48 μΩ·m (20 °C); melting range 1200–1260 °C |
Typical applications
- Precision and slide resistors
- Strain gauges
- Thermocouple and compensation leads
Industries: Electrical & Electronics, Instrumentation
Updated October 27, 2026
Frequently asked questions
What is 6J40 (Constantan) used for?
Precision and slide resistors, strain gauges, thermocouple and compensation leads.
Which standards apply to 6J40 (Constantan)?
GB/T 2903, ASTM B267 (comparable). Compliance, testing and certificates are confirmed for each order.
What forms and sizes of 6J40 (Constantan) are available?
Wire, strip, hot-rolled bar. Sizes are cut or produced to order.
How do I get a price for 6J40 Constantan Resistance Wire?
Prices are not published. Request a customised quotation from PANDA COLLECTIONS with the product code PT-XHA-PRA-00030, size, quantity, testing and certificate requirements, and delivery address.
Can mill test certificates be provided?
Mill test certificates to EN 10204 3.1 with heat traceability can be requested. Melting route (e.g. ESR/VAR), heat-treatment condition and NDT requirements are confirmed per enquiry.
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