Products Categories

Fe-Cr-Al Alloys
- Round Wire
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
- Electrothermal strip
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
- Flat Wire
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
- Electric furnace wire
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
- Flat Strip
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
- Bar
  - 1Cr13Al4
  - 0Cr15Al5
  - 0Cr19Al2
  - 0Cr21Al4
  - 0Cr21Al6
  - 0Cr25Al5
  - 0Cr21Al6Nb
  - 0Cr27Al7Mo2
Nickel-chromium Alloys
- Wire
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
- Electrothermal strip
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
- Flat Wire
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
- Electric furnace wire
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
- Flat Strip
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
- Bar
  - Cr25Ni20
  - Cr20Ni30
  - Cr20Ni35
  - Cr15Ni60
  - Cr20Ni80
  - Cr30Ni70
Cn/Mn-Cu Alloys
- Wire
  - 6J12
  - 6J8
  - 6J13
  - 6J40
  - CuMn7SN
  - CuMn30Ni5
- Flat Wire
  - 6J12
  - 6J8
  - 6J13
  - 6J40
  - CuMn7SN
  - CuMn30Ni5
- Flat Strip
  - 6J12
  - 6J8
  - 6J13
  - 6J40
  - CuMn7SN
  - CuMn30Ni5
- Bar
  - 6J12
  - 6J8
  - 6J13
  - 6J40
  - CuMn7SN
  - CuMn30Ni5
Cu-Ni Alloys
- Wire
  - CuNi1
  - CuNi2
  - CuNi6
  - CuNi8
  - CuNi10
  - CuNi14
  - CuNi19
  - CuNi23
  - CuNi30
  - CuNi34
  - CuNi44
- Flat Wire
  - CuNi1
  - CuNi2
  - CuNi6
  - CuNi8
  - CuNi10
  - CuNi14
  - CuNi19
  - CuNi23
  - CuNi30
  - CuNi34
  - CuNi44
- Flat Strip
  - CuNi1
  - CuNi2
  - CuNi6
  - CuNi8
  - CuNi10
  - CuNi14
  - CuNi19
  - CuNi23
  - CuNi30
  - CuNi34
  - CuNi44
- Bar
  - CuNi1
  - CuNi2
  - CuNi6
  - CuNi8
  - CuNi10
  - CuNi14
  - CuNi19
  - CuNi23
  - CuNi30
  - CuNi34
  - CuNi44
Precision Alloys
- Wire
- Flat Wire
- Flat Strip
- Bar
Ni-Al Alloys
- Wire ＆ Welding
  - Ni95Al5
Pure Nickel Alloys
- Wire
  - N4(Ni201)
  - N6(Ni200)
- Flat Wire
  - N4(Ni201)
  - N6(Ni200)
- Flat Strip
  - N4(Ni201)
  - N6(Ni200)
- Bar
  - N4(Ni201)
  - N6(Ni200)
Monel Alloys
- Wire
- Flat Wire
- Flat Strip
- Steel Bar
- Bolts ＆ Fasteners
- Flange ＆ Ring
- Wire ＆ Welding
Hastelloy Alloys
Inconel Alloys
Incoloy Alloys
Haynes Alloys
- Wire
- Flat Wire
- Flat Strip
- Bar

Featured Module

Constantan Alloy Round Wire 6J40

Place of Origin Jiangsu,China
Model Number Constantan Alloy Round Wire 6J40
Trade Names UNS C71500 wire,2.3015 wire
Dimensions Customized Size
Delivery Conditions Grinding. Polished. Bright.
Avaliable Shapes Wire.Customized
MOQ 50~200 (KG)
Production Standards GB/T、GJB、YB/T、ASTM、EN、DIN、IEC
Packaging Details Wooden Case, or as per Client's request
Payment Terms L/C, T/T, Western Union, MoneyGram
Trade Terms FOB, CIF, DDP, DAP, EXW
Delivery Time 20~60 days

product details

Overview

Constantan Round Wire 6J40 is engineered for precision resistive applications with near-zero temperature coefficient (TCR≤±20ppm/°C), maintaining ±0.5% resistivity stability from -50°C to +400°C. Its superior oxidation resistance and fatigue performance make it ideal for industrial heaters, sensor bridges, and thermocouple compensation wires. ISO/IEC 17025 certified, 6J40 wire meets stringent material consistency requirements in medical and aerospace industries.

Limiting Chemical Composition, %

Nickel（Ni）............................................................................................................................................39.0-41.0

Manganese（Mn）.....................................................................................................................................1.0-2.0

Copper（Cu）..................................................................................................................................................Rest

The Else is no

Technical Specifications

Parameter	Value/Range
Melting Point	1210-1300°C
Tensile Strength	450-600 MPa
Elongation	20-30%
Surface Finish	Bright Annealed/Electropolished
Diameter Range	Customized (0.1mm-10.0mm)
Temperature Resistance	-50°C ~ 400°C
Continuous Use Temp	≤400°C
Short-Term Peak Temp	≤550°C (≤30 mins)
Resistivity	0.49±0.02 μΩ·mm
Density	8.9±0.1 g/cm³

Material Properties

● Resistivity Stability:

ΔR/R≤0.5% across temperature range ensures measurement accuracy

● Low Thermal EMF:

Cu-Constantan pair EMF≤40μV/°C

● Creep Resistance:

＜0.2% creep after 1000hrs at 400°C

● Surface Uniformity:

Ra≤0.1μm ultra-smooth surface minimizes contact resistance

Core Advantages

● Versatility:

Ideal for high-temperature, high-stress, and precision applications.

● Cost-Efficiency:

Extended lifespan reduces maintenance costs.

● Eco-Friendly Compliance:

Meets RoHS and ISO standards for sustainability.

Typical Applications

● Precision Measurement:

Strain gauge & Wheatstone bridge wiring

● Thermal Management:

Industrial furnace coils, semiconductor thermal control

● Energy Systems:

Fuel cell interconnects, solar thermal collectors

● Automotive Electronics:

Engine pressure sensors, BMS wiring

Industries Served

● Precision Instruments & Test Measurement

● Power Electronics & Energy Conversion

● Automotive & Rail Transport

● Medical Diagnostic Equipment

● Aerospace Thermal Management

Packaging & Certifications

● Anti-Oxidation Packaging: Inert gas-sealed spools + vacuum aluminum bags

● Certifications: ISO/IEC 17025, RoHS 3, REACH, UL 758

Why Choose 6J40?

● Zero-Compromise Quality:

Individual material analysis reports with ICP-OES testing

● Customization Service:

Resistivity fine-tuning (±5%) & specialty coating options

● Technical Support:

Free thermo-electro-mechanical simulation models

Available Forms

We provide you with a variety of product forms, including but not limited to

● Strip & Foil

● Round Wire &Flat Wire

● Bar & Rod

● Electrothermal Strip

● Flange & Ring

● Wire & Welding

● Reststance Wire

● Electric Alloy Wire

● Electric Furnace Bar

● Customize

description2

Strip ＆ Foil

Round Wire

Bar ＆ Rod

Electrothermal Strip

Bolts ＆ Fasteners

Flange ＆ Ring

Wire ＆ Welding

Reststance Wire ＆ Flat Wire

Electric Alloy Wire

Electric Furnace Wire

Constantan Alloy Round Wire 6J40

Overview

Core Advantages

Typical Applications

Industries Served

Packaging & Certifications

Why Choose 6J40?

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Fe-Cr-Al Alloys Round Wire 1Cr13Al4

Fe-Cr-Al Alloys Electrothermal strip 0Cr15Al5

Fe-Cr-Al Alloys Flat Wire 0Cr19Al2

Fe-Cr-Al Alloys Electric furnace wire 0Cr21Al4

Fe-Cr-Al Alloys Flat Strip 0Cr21Al6

Fe-Cr-Al Alloys Bar 0Cr25Al5