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The monel composition is primarily a nickel-copper alloy, typically consisting of approximately 63-70% nickel and 28-34% copper, with small additions of iron, manganese, carbon, a...
READ MORE6J40 Constantan Alloy Precision Electrical Alloys Wholesale
6J40 Constantan Alloy Precision Electrical Alloys
6J40 Constantan alloy precision electrical alloys, with their extremely low temperature coefficient of resistance (TCR) and excellent processing properties, are a core material in the manufacture of precision electronic components, shunts, and thermocouple compensating wires. The thermoelectric potential of 6J40 against copper is 45 μV/°C, which is considered a challenge in precision resistance applications because temperature differences at the connection points can generate parasitic voltages. However, this characteristic makes 6J40 an ideal negative electrode material for manufacturing J-type thermocouples and compensating wires. 6J40 has a very wide operating temperature range (5°C to 500°C). Its oxidation resistance is superior to that of manganin, maintaining relatively stable electrical properties in air at temperatures up to 500°C.
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| Grade | CONSTANTAN | MANGANIN | MANGANIN | MANGANIN | |
| 6J40 | 6J12 | 6J8 | 6J13 | ||
| Main chemical composition (%) | Mn | 1–2 | 11–13 | 8–10 | 11–13 |
| Ni | 39–41 | 2–3 | – | 2–5 | |
| Cu | Bal | Bal | Bal | Bal | |
| Max Working Temperature (℃) | 5–500 | 5–45 | 10–80 | 10–81 | |
| Density (g/cm³) | 8.88 | 8.44 | 8.7 | 8.4 | |
| Resistivity (μΩ·m, 20℃) | 0.48±3% | 0.47±3% | 0.35±5% | 0.44±4% | |
| Elongation (φ>1.0) | ≥15 | ≥15 | ≥15 | ≥15 | |
| Resistance Temperature Coefficient (10⁻⁵/℃, 20–600℃) | – 40~+40 | –3~+20 | – 5~+10 | 0~+40 | |
| Thermo EMF (μV/℃, 0–100℃) | 45 | 1 | 2 | 2 | |
About Us
Danyang Haiwei Electrothermal Alloy Co., Ltd.
Danyang Haiwei Electrothermal Alloy Co., Ltd. is located in Lvcheng Town, Danyang City, Jiangsu Province, China. The company was established in 2010 based on the original company "Danyang Huakang Electric Heating Alloy Co., Ltd." and has been in operation for over 40 years. Since its expansion, the company's total area has reached 30,000 square meters. As a famous China 6J40 Constantan Alloy Precision Electrical Alloys Manufacturers and 6J40 Constantan Alloy Precision Electrical Alloys Factory, the company has production lines for a series of products including FeCrAl, Kanthal, CuNi, NiCr, CuMn, Kangtong, Monel, Incoloy, Hastelloy, etc. We have equipped with advanced equipment and processes, capable of providing a complete product range from raw material melting, steel rolling, stretching, heat treatment to finished products and packaging. Standardization work and strict inspections run through every stage of the product. As Haiven people, we have always adhered to the goal of "building a first-class brand and a first-class enterprise". We uphold the spirit of "quality first, reputation foremost", providing customers with the highest quality products and competitive prices. Welcome new and old customers at home and abroad to visit and patronize. Let us achieve long-term win-win cooperation.
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What Is Monel Metal? The Direct Answer Monel metal is a group of nickel-copper alloys containing approximately 63–70% nickel and 27–34% copper, with minor additions of iron, manga...
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To properly install and connect thermocouple wire and avoid measurement errors, you must match the wire type to the application, maintain polarity, minimize extension wire length,...
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