Raytron Technical Review RESEARCH ARTICLE WP-01-14

NCC vs Pure Nickel: High-Temperature Applications

RAYTRON技术团队¹ *

¹RAYTRON集团技术研究中心, 中国

^*Corresponding author

Received: 2025年12月 Accepted: 2026年2月 Published: 2026年3月

DOI: 10.1234/raytron.2026.WP-01-14

Abstract

镍包铜（NCC）和纯镍在高温电气应用中各有优势。本白皮书比较这两种材料的热稳定性、抗氧化性、机械性能和高温下的电气性能，为高温应用的材料选择提供指导。

Key Findings

Conductivity Advantage 高3-4倍 NCC achieves 85% IACS vs pure nickel's 23% IACS conductivity
Temperature Limit 400-450°C Optimal performance up to 400°C continuous, 500°C intermittent
Cost Savings 20-30% Lower cost than pure nickel while maintaining high-temperature performance
Oxidation Resistance 优异 Nickel cladding provides superior oxidation resistance at elevated temperatures

Keywords

NCC;镍包铜;纯镍;高温应用;抗氧化;热稳定性

1. Introduction

创建高温性能对比图

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Figure Fig. 1 高温性能对比

2. Material Overview

3. High-Temperature Performance

4. Oxidation Resistance

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Figure Fig. 2 氧化层特性对比

5. Mechanical Properties

6. Electrical Properties

NCC conductivity is far higher than pure nickel, advantageous in high-current applications.

7. Cost Analysis

NCC provides cost savings while maintaining performance.

8. Conclusion

NCC is an excellent alternative to pure nickel for applications under 400°C, offering higher conductivity and lower cost.

Frequently Asked Questions

What is Nickel-Clad Copper (NCC)?

NCC is a bimetallic conductor with a copper core and nickel outer layer, manufactured through cladding processes. It combines the high conductivity of copper with the oxidation resistance and high-temperature capability of nickel.

What are the temperature limitations of NCC compared to pure nickel?

NCC is suitable for continuous operation up to 400-450°C and intermittent use up to 500°C. Pure nickel can operate continuously at 600°C and intermittantly at 800°C. For applications above 450°C, pure nickel should be considered.

Why choose NCC over pure nickel for high-temperature applications?

NCC offers significantly higher conductivity (85% IACS vs 23% IACS), lower cost (20-30% savings), and is suitable for most high-temperature applications under 400°C. The higher conductivity allows for smaller conductor sizes in current-carrying applications.

Is NCC suitable for automotive under-hood applications?

Yes, NCC is excellent for automotive under-hood applications where temperatures typically range from 150-300°C. Its combination of high conductivity, oxidation resistance, and cost-effectiveness makes it ideal for engine compartment wiring and sensors.

How does NCC perform in terms of solderability?

NCC has good solderability due to its nickel surface, though not as easy as pure copper. The nickel cladding prevents oxidation of the underlying copper, maintaining surface quality for reliable connections over time.

Figures

创建高温性能对比图

Fig. 1 High-temperature performance comparison

创建氧化层特性对比图

Fig. 2 Oxide layer characteristics comparison

Tables

Table 1 Temperature ratings

Rating	Temperature Range	Typical Application
High-temp	150-300°C	Automotive under-hood
Very high-temp	300-500°C	Aerospace
Ultra high-temp	500-800°C	Industrial furnaces

Table 2 High-temperature performance

Property	NCC	Pure Nickel
Max continuous temp	400-450°C	600°C
Max intermittent temp	500°C	800°C
400°C conductivity retention	53%	65%

Table 3 Conductivity comparison

Material	Room Temp	400°C
NCC-85%	85% IACS	45% IACS
Pure Nickel	23% IACS	15% IACS

Table 4 Cost comparison

Material	Relative Cost Index
NCC-10%	0.80
NCC-20%	1.00
Pure Nickel	1.30

References

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

Authoritative References

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