Product Description

6J11 New Constantan Alloy Strip

Product Overview

Standard Designations & Material Foundation

• Alloy Grade: 6J11 (Chinese standard new constantan alloy grade; upgraded version of traditional constantan 6J40 with optimized Mn content)
• International Equivalents: Performance comparable to DIN 17471 CuNi44Mn1.5 and ASTM B193 modified constantan, with better medium-temperature stability
• Core Basic Parameters: Applicable temperature range 0-120℃; density 8.5g/cm³; resistivity 0.49μΩ·m (20℃); customizable thickness 0.05-2.0mm, width 10-300mm (common specifications: 0.1mm×50mm, 0.19mm×100mm, 0.25mm×150mm)
• Compliant Standards: Adheres to GB/T 1234-2019 (Chinese standard for resistance alloy strips), IEC 60404-8-2, and RoHS 2.0 environmental standards
• Manufacturer: Huona New Material, certified to ISO 9001 and ISO 14001, with 20+ years of experience in copper-nickel alloy smelting and precision rolling

Key Core Advantages (Based on Core Parameters)

1. Stable Electrical Performance in Medium-Temperature Range

• Optimized Resistivity Matching: Resistivity stably maintained at 0.49μΩ·m (20℃), 5% higher than traditional 6J40 constantan (0.47μΩ·m)—enabling smaller volume of resistors and shunts under the same resistance requirement, which is critical for miniaturized consumer electronics (e.g., smartphone fast-charging modules).
• Low TCR for Precision Measurement: Within the applicable temperature range of 0-120℃, TCR is as low as ±15 ppm/℃, and resistance drift is <0.008% after 1000 hours of continuous operation at 120℃—far superior to copper-nickel alloys (±40 ppm/℃) and ensuring measurement accuracy ≤0.05% for precision instruments.

2. Balanced Mechanical & Processing Performance

• Density Advantage for Lightweight Design: Density of 8.5g/cm³ is 12% lower than nickel-chromium alloys (9.2g/cm³)—reducing the weight of resistor assemblies by 10-15% for portable electronic devices (e.g., wearable health monitors) and automotive on-board electronics.
• Excellent Ductility & Machinability: Tensile strength reaches 480-550 MPa (annealed state), elongation ≥25%—enabling 180° bending (minimum radius ≥2× thickness) without cracking. The uniform microstructure (grain size ≤20μm) supports ultra-fine chemical etching with minimum line width 0.03mm, meeting the production of high-density resistor arrays.

3. Reliable Corrosion & Environmental Adaptability

Technical Specifications (With Core Parameter Details)

Product Specifications (With Application Support)

Typical Application Scenarios

1. Consumer Electronics

2. Automotive Low-Temperature Electrical Systems

3. Industrial Control Instruments

4. Wearable Electronic Devices

Quality Assurance & Technical Support

1. Material Inspection: XRF chemical composition analysis (ensures Ni/Mn content meets standard) and density testing (via Archimedes method, accuracy ±0.01g/cm³).
2. Electrical Performance Testing: High-precision four-point probe tester (resistivity accuracy ±0.005μΩ·m) and temperature-controlled TCR tester (0-120℃, accuracy ±0.5 ppm/℃).
3. Mechanical & Processing Testing: Universal testing machine (tensile/elongation) and micro-etching test (verifying 0.03mm line width processing capability).