With excellent softening resistance, it lays a reliable foundation for high-end copper strip.
2026 Apr 27
In modern industrial fields such as power electronics, new energy vehicles and high-end communication equipment, copper tape not only needs to conduct current and heat, but also needs to maintain stable mechanical properties in harsh thermal environment. At this time, a key index-softening resistance directly determines the reliability, life and safety of components and even the whole system. Jiangxi Jinpin Copper Co., Ltd. has demonstrated remarkable technical advantages in this core field with its profound understanding of material science and precise production control technology.
1. Interpretation of core indicators: What is the "softening resistance" of copper strip?
Softening resistance, in general, refers to the ability of copper strip to resist the decline of its strength and hardness after heating at a certain temperature and time.
Technical essence: the cold-rolled copper strip is in a "work hardening" state, with high strength but poor plasticity. By annealing, it can be restored to plasticity (that is, "softened"). "Softening resistance" refers to the ability of the finished copper strip to stubbornly maintain its original strength and hardness even if it is exposed to high temperature in subsequent processing or use environment (such as welding, packaging, long-term electrification and heating, etc.).
Performance standard: usually measured by the strength retention rate of the material after being kept at a specific temperature (such as 150℃, 200℃, etc.) for one hour. The higher the softening resistance temperature, the better the performance.
The quality of this property directly depends on the microstructure of copper strip, especially the control of impurity elements, the state of grain boundaries and the distribution of precipitated phases, which is a concentrated expression of the material composition design and manufacturing process level.
1. Interpretation of core indicators: What is the "softening resistance" of copper strip?
Softening resistance, in general, refers to the ability of copper strip to resist the decline of its strength and hardness after heating at a certain temperature and time.
Technical essence: the cold-rolled copper strip is in a "work hardening" state, with high strength but poor plasticity. By annealing, it can be restored to plasticity (that is, "softened"). "Softening resistance" refers to the ability of the finished copper strip to stubbornly maintain its original strength and hardness even if it is exposed to high temperature in subsequent processing or use environment (such as welding, packaging, long-term electrification and heating, etc.).
Performance standard: usually measured by the strength retention rate of the material after being kept at a specific temperature (such as 150℃, 200℃, etc.) for one hour. The higher the softening resistance temperature, the better the performance.
The quality of this property directly depends on the microstructure of copper strip, especially the control of impurity elements, the state of grain boundaries and the distribution of precipitated phases, which is a concentrated expression of the material composition design and manufacturing process level.
