All Products
-
Alfred***We received the goods, everything went fine. Perfect packaging, good product quality, good price - we are satisfied. -
May***The product quality is very good, beyond my expectations, the actual use of fully meet my needs, we will buy again. -
Matthew***I bought low expansion alloy from Joy, She is a very responsible lady, Huona's products quality is pretty good.
6J12 Manganin Enameled Wire 0.05-2.0mm 180 Class Polyester-imide CuMn12Ni Resistance Alloy for Shunt Resistor
| Place of Origin | Shanghai, China |
|---|---|
| Brand Name | HUONA |
| Certification | ISO 9001:2015 |
| Model Number | 6J12 |
| Minimum Order Quantity | 5 Kilograms |
| Price | USD 30-85 / Kilogram |
| Packaging Details | Layer wound plastic spool, VCI paper, sealed foil bag with desiccant, export carton or plywood case |
| Delivery Time | 7-10 working days for stock sizes, 20-25 days for custom diameters |
| Payment Terms | T/T,L/C,Western Union |
| Supply Ability | 30 Tons per Month |
Product Details
| Grade | 6J12 / CuMn12Ni / Manganin | Manganese Content | 11.5-13.5% |
|---|---|---|---|
| Nickel Content | 2.0-3.0% | Copper Content | Balance |
| Bare Diameter | 0.05-2.0mm (customizable) | Enamel Type | Polyester-imide (PEI), Dual Coat |
| Thermal Class | Class 180 (H) | Enamel Build | Grade 1 / Grade 2 / Grade 3 |
| Breakdown Voltage | >= 1.5 KV (0.1mm Grade 2, Twisted Pair) | Electrical Resistivity | 0.43-0.48 UOhm.m At 20 C |
| Temperature Coefficient | +/-10 To +/-25 Ppm/C | Thermal EMF Vs Copper | <= 2 UV/C |
| Density | 8.4-8.6 G/cm3 | Tensile Strength | 400-600 MPa |
| Elongation | >= 25% | Max Service Temperature | 180 C |
| Colour | Natural, Red, Black, Green Or Custom | Spool Weight | 0.1-20 Kg Per Spool |
| Standard | GB/T 6145, IEC 60317-13 | ||
| Highlight | 6J12 Polyester-imide Enameled Wire,CuMn12Ni Manganin Resistance Wire,180 Class Shunt Resistor Wire |
||
Product Description
Product Overview
6J12 manganin enameled wire is a copper-manganese-nickel precision resistance alloy wire (CuMn12Ni, Chinese grade 6J12) coated with 180 class polyester-imide enamel. The alloy delivers a low and stable temperature coefficient of resistance together with a low thermal EMF against copper, making it the classic choice for precision resistors, current shunts and measuring circuits. The double-coated polyester-imide film provides class 180 heat resistance, good dielectric strength and reliable layer winding.
We draw the 6J12 wire from vacuum-melted billet, anneal it to a soft, uniform temper, then apply multiple polyester-imide enamel passes with in-line diameter and continuity control. Bare diameter from 0.05 mm to 2.0 mm is standard, available in grade 1, grade 2 or grade 3 build. Coatings are pinhole tested and each spool is inspected for elongation, adhesion and resistance before packing.
Chemical Composition (wt. %)
| Element | Mn | Ni | Cu | Fe | Si | C |
|---|---|---|---|---|---|---|
| Specification | 11.5–13.5 | 2.0–3.0 | Balance | ≤ 0.5 | ≤ 0.2 | ≤ 0.05 |
Physical and Electrical Properties
| Parameter | Value | Remark |
|---|---|---|
| Density | 8.4–8.6 g/cm³ | Room temperature |
| Electrical resistivity | 0.43–0.48 µΩ·m | at 20 °C |
| Temperature coefficient of resistance | ±10 to ±25 ppm/°C | 20–100 °C range |
| Thermal EMF vs copper | ≤ 2 µV/°C | Typical, well matched pair |
| Melting point | approx. 960 °C | — |
| Tensile strength | 400–600 MPa | Soft annealed |
| Elongation | ≥ 25% | Soft annealed |
| Hardness | 120–180 HV | Soft annealed |
| Max continuous service temperature | 180 °C | Limited by polyester-imide film |
| Solderability | By stripping only | Enamel must be removed before soldering |
Enamel Coating Specification
| Item | Specification | Test Method |
|---|---|---|
| Enamel type | Polyester-imide (PEI), dual coat | — |
| Thermal class | Class 180 (H) | IEC 60317-13 / GB/T 6109 |
| Build | Grade 1, Grade 2, Grade 3 | IEC 60317 |
| Breakdown voltage | ≥ 1.5 kV for 0.1 mm grade 2 | Twisted pair test |
| Continuity (pinholes) | ≤ 5 per 30 m, 0.1 mm grade 2 | DC high voltage |
| Adhesion | No cracking after 20% elongation | Mandrel / snap test |
| Colour | Natural, red, black, green or per request | Visual |
Available Sizes
| Bare diameter | Enamel build | Spool weight | Typical use |
|---|---|---|---|
| 0.05–0.15 mm | Grade 1 / 2 | 0.1–2 kg | Precision resistors, potentiometers |
| 0.16–0.50 mm | Grade 1 / 2 | 1–5 kg | Shunts, current sensing coils |
| 0.51–1.00 mm | Grade 2 / 3 | 2–10 kg | Power resistors, measuring instruments |
| 1.01–2.00 mm | Grade 2 / 3 | 5–20 kg | Braking resistors, heavy shunts |
Typical Applications
- Precision wirewound resistors and resistor networks
- Current shunts and sampling resistors for meters and BMS boards
- Potentiometers, decade boxes and calibration instruments
- Measuring bridges and laboratory standard resistors
- Braking and loading resistors for drives and inverters
- Automotive and energy meter current sensing elements
Why Choose This 6J12 Enameled Wire
- Very low TCR keeps resistance value stable over the working temperature range
- Low thermal EMF against copper reduces offset error in DC measuring circuits
- Class 180 polyester-imide film allows higher winding temperature than 130 class coatings
- Soft annealed temper winds tightly on small bobbins without spring back or cracking
- Controlled bare diameter tolerance keeps resistor values repeatable from spool to spool
Quality Control
| Stage | Check |
|---|---|
| Raw material | Spectrochemical analysis of Mn, Ni, Fe, Si, C |
| Melt and cast | Vacuum induction melting, low gas content |
| Drawing and anneal | Multi-pass drawing, protective atmosphere anneal, laser diameter gauging |
| Enamelling | Multi-pass PEI coating, in-line pinhole detection, cure verification |
| Electrical test | Resistance per metre and TCR sampling per lot |
| System | ISO 9001:2015, third party inspection on request |
Packing and Delivery
Wire is wound on plastic spools with layer separation, wrapped in VCI paper and sealed in aluminium foil bags with desiccant, then packed in export-grade cartons or plywood cases. Spool weight and label wording follow customer requirements. Stock sizes ship in 7–10 working days; custom diameters and colours take 20–25 days after deposit.
Ordering Information
Please confirm bare diameter, enamel build (grade 1, 2 or 3), colour, spool weight and annual quantity. Sample spools of 0.5–1 kg are available for winding and TCR trials. Send your specification and we will confirm price, lead time and packing the same working day.
Recommended Products
-
VIDEO
-
