Customizable Constantan 6j40 Micro Wire, Laser Cutting Compatible for Complex Shapes

• Customization: Available
• Certification: RoHS, CB, CCC, ISO9001, CE
• Type: CuNi Wire
• Model NO.: 6J40
• Material: Ni-Cu
• Form: Heating Wire
• Shape: Round
• Name: Kangtong 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
• Application: Resistor Components
• Transport Package: Carton/Wooden Pallate/Wooden Case
• Trademark: Victory
• Origin: China
• HS Code: 7408290000
• Production Capacity: 1000000ton/Year
• Package Size: 30.00cm * 20.00cm * 20.00cm
• Package Gross Weight: 3.000kg

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.

Product Description

Packing & Delivery

Company Profile

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.

Q. What is your working time? 

A. Monday- Saturday : 7: 30AM-17: 00PM (Beijing time, GMT+08. 00)

We have public holiday during May.1-3, Oct. 1-7 and Chinese New Year holiday. Please email us during our holiday if u have any question. 
 
Q. Do you provide free samples? 
A. Yes, we can provide a free sample for testing, buyer should bear all the shipping costs. 
 
Q. What is your payment terms? 
A. T/T, L/C, D/A, D/P, Western Union, MoneyGram, Paypal 
 
Q. What is the lead time? 
A. Usually sample lead time is 7 days after payment has been confirmed.