Super Corrosion-Resistant Constantan 6j40 Micro Wire for Marine Engineering, 20-Year Seawater Resistance

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI, ISO 9001
• Model NO.: 6J40
• Purity: Cu55-57% Ni43-45%
• Alloy: Alloy
• Type: CuNi Wire
• Powder: Not Powder
• Name: 6j40
• Density: 8.9 G/Cm³
• Resistivity: 0.49 μΩ·m
• Melting Point: 1050°c
• Thermal Conductivity: 40 W/(M·K)
• Tensile Strength: 450 MPa
• Elongation: 15%
• Hardness: 120 Hv
• Main Components: Cu+Ni+Mn
• Transport Package: Carton or Wooden Case
• Specification: 0.01mm-10mm
• Trademark: DLX
• Origin: Changzhou, Jiangsu, China
• HS Code: 7408290000
• Production Capacity: 1000000ton/Year

Product Description

Product Overview

Constantan 6J40 is a nickel-copper precision resistance alloy featuring high resistivity, low temperature coefficient, excellent corrosion resistance, and superior workability. It is widely used in precision resistors, shunts, and instrumentation applications.

Key Features

      High Resistivity (0.49 μΩ·m) - Ideal for precision resistance components

      Low Temperature Coefficient (±20 ppm/°C) - Outstanding thermal stability

      High Mechanical Strength (Tensile ≥450 MPa) - Wear-resistant, suitable for precision machining

      Oxidation & Corrosion Resistant - Performs well in harsh environments.

   
      Excellent Formability - Available in wire, strip, foil, and rod forms
 

 

 

Typical Applications

 

Precision resistors & potentiometers
Current sensing shunts
Thermocouple compensation wires
Core components for electronic instruments & sensors

Target Industries
 

 Electronics & Power    Instrumentation    Industrial Automation    Aerospace

 

This alloy complies with GB/T 6145 standards and supports customized specifications. Material certifications (e.g., RoHS) are available upon request. For detailed technical data or samples, please contact the supplier.

 

Certifications

 

Company Profile

CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

 

 

FAQ
 

Q: What is 6J40 (Constantan)?
A: 6J40 is a nickel-copper-based precision resistance alloy with high resistivity, low temperature coefficient, and excellent corrosion resistance, widely used in precision electronic components.

 

Q: What are the key properties of 6J40?
A: Resistivity: 0.49 μΩ·m    Temperature Coefficient (TCR): ±20 ppm/°C

    Tensile Strength: ≥450 MPa
    Good oxidation & corrosion resistance
    Excellent machinability (wire, strip, foil, rod forms available)

 

Q: What are the typical applications?
A: Precision resistors & shunts
    Thermocouple compensation wires
    Sensors & measuring instruments
    Industrial and aerospace electronics

 

Q: What standards does it comply with?
A:It meets GB/T 6145 (China National Standard) and can be supplied with RoHS compliance certification.

 

Q: Are you a trading company or manufacturer?
A: We're manufacturer.

Q: Could you help to design the product?

A:  Yes, we have excellent R&D team, OEM/ODM orders are all welcome.

 

Q: Could you supply samples?

A: Yes, wecould supply samples according to your requirement.

Q:Could we visit your factory?
A: Sure, factory visit is warmly welcome.