Raytron Technical Review RESEARCH ARTICLE ncc-40-specifications

NCC-40% IACS: Standard Specifications

Gao-Lei Xu¹ *

¹RAYTRON Group Technology Research Center, China

^*Corresponding author

Received: 2025-12 Accepted: 2026-02 Published: 03/2026

DOI: 10.1234/raytron.2026.WP-04-01

Abstract

NCC-40% represents the standard grade of Nickel-Clad Copper, providing 40% IACS conductivity and nickel's corrosion resistance. This whitepaper examines NCC-40% specifications, performance characteristics, and applications in harsh environments and high-temperature applications.

Key Findings

Conductivity 40% IACS Standard conductivity grade for NCC products
Nickel Cladding 35-45% Optimal nickel volume ratio for corrosion resistance
Temperature Range HighReach400°C Excellent high-temperature stability
Tensile Strength 250-400 MPa Robust mechanical properties for demanding applications

Keywords

NCC-40%;nickel-clad copper;standard specifications;corrosion resistance;high-temperature applications

1. Introduction

Create NCC-40%Cross-Cross-Section Structure Schematic Diagram

MEDIA TODO

Figure Fig. 1 NCC-40% cross-section structure schematic

2. Material Specifications

3. Electrical Properties

4. Mechanical Properties

5. Applications

6. Conclusion

NCC-40% provides reliable solutions for harsh environments and high-temperature applications.

Frequently Asked Questions

What is NCC-40%?

NCC-40% is a standard grade of Nickel-Clad Copper with 40% IACS conductivity, manufactured using clad and weld process with metallurgical bonding. It provides excellent corrosion resistance and high-temperature performance.

What are the main applications of NCC-40%?

NCC-40% is primarily used in alkaline electrolysis systems, resistance welding electrodes, aerospace components, and other applications requiring corrosion resistance and high-temperature stability.

How does NCC-40% differ from NCC-50%?

NCC-40% has higher nickel content (35-45%) providing better corrosion resistance, while NCC-50% has higher conductivity (48-52% IACS) with lower nickel content (25-35%). The choice depends on whether corrosion resistance or conductivity is the priority.

What is the maximum operating temperature for NCC-40%?

NCC-40% can operate continuously at temperatures up to 400°C, making it suitable for high-temperature applications like welding electrodes and industrial heating systems.

Is NCC-40% suitable for alkaline environments?

Yes, NCC-40% is specifically designed for harsh alkaline environments such as KOH solutions in alkaline water electrolysis, where its nickel cladding provides excellent long-term corrosion resistance.

Figures

Create NCC-40%Cross-Section StructureDiagram

Fig. 1 NCC-40% cross-section structure schematic

Tables

Table 1 Material composition

Component	Specification
Core	Copper (≥99.9%)
Cladding	Nickel (≥99.0%)
Nickel Volume Ratio	35-45%

Table 2 Electrical properties

Property	Value
Conductivity	38-42% IACS
Resistivity	4.0-4.5 μΩ·cm
Temp Coefficient	0.0038/°C

Table 3 Mechanical properties

Property	Value
Tensile Strength	250-400 MPa
Elongation	10-25%
Hardness	80-120 HV

Table 4 Applications

Application	Why NCC-40%
Alkaline electrolysis	Corrosion resistance
Welding electrodes	High-temp performance
Aerospace	Reliability

References

ASTM International ASTM B355: Nickel-Coated Copper Wire ASTM (2020)

Authoritative References

ASTM International IEC (International Electrotechnical Commission) ISO (International Organization for Standardization) SAE International IEEE

Gaolei Xu

Senior Materials Scientist

Credentials & Honors

• CTO, Raytron Group
• Zhejiang Provincial High-level Talent Special Support Program - Young Talent
• Shaoxing "Technology Vice President"
• Shaoxing Science and Technology Commissioner
• Member of National Technical Committee 243 on Heavy Metals (SAC/TC 243/SC2)

National Standards (Lead Author) View Official

GB/T 27671-2011 - Copper Profiles for Electrical Conductors
YS/T 1043-2015 - Silver-bearing Oxygen-free Copper Strip for Motor Commutators
YS/T 974-2014 - Copper and Copper Alloy Strip for Composite Contact Materials
YS/T 1082-2015 - Copper Strip for Lamp Lead Stents

Patents (Inventor) Search Patents

CN104959396A - Production Process of Copper Strip for Composite Contact Materials
CN106077125A - Production Process of Copper Profile for Magnetic Pole Coils
CN201410710206 - Conductive Material for High-speed Railway Traction Motors and Production Method
CN201310719717 - Method for Controlling Strip Shape of Copper Strip Blank by Continuous Extrusion
CN201310720126 - Device for Controlling Strip Shape of Copper Strip Blank by Continuous Extrusion
CN201310376884 - Five-in-one Copper Strip Edge Treatment Equipment for Transformers
CN201420184755 - Continuous Extrusion Die Flow Promotion Device
CN201320761640 - Continuous Extrusion Waste Cleaning Device

Areas of Expertise

Copper-Clad Aluminum (CCA) Technology Copper-Clad Steel (CCS) Manufacturing Bimetallic Composite Materials PV Ribbon for Solar Cells Battery Tab Materials for EV Applications Continuous Extrusion Technology

Selected Publications

• Research and Application of Rolling Method for Manufacturing Metal Laminated Composites, Aluminum Processing Journal, 2008
• Annealing Process Research of Copper-Aluminum Composite Strip
• Research on Preparation Process of Copper/Aluminum Composite Strip for Cables
• Interface Microstructure Evolution of Rolled Copper/Aluminum Composite Strip During Annealing

Mr. Xu Gaolei is a distinguished expert in non-ferrous metal processing with over 15 years of experience. He is recognized as a Young Talent under the Zhejiang Provincial High-level Talent Special Support Program. He leads R&D initiatives in bimetallic composite technologies and has contributed significantly to the standardization of copper and bimetallic materials in China.

Click standard/patent codes to view official documents