{"id":33501,"date":"2025-03-19T16:42:31","date_gmt":"2025-03-19T08:42:31","guid":{"rendered":"https:\/\/www.ray-tron.com\/?p=33501"},"modified":"2025-03-19T16:42:38","modified_gmt":"2025-03-19T08:42:38","slug":"introduction-to-the-performance-of-multi-layer-composite-copper-strip-copper-clad-aluminum-strip","status":"publish","type":"post","link":"https:\/\/www.ray-tron.com\/en\/introduction-to-the-performance-of-multi-layer-composite-copper-strip-copper-clad-aluminum-strip\/","title":{"rendered":"Introduction to the performance of multi-layer composite copper strip (copper clad aluminum strip)"},"content":{"rendered":"

Multilayer composite copper strip, also known asCopper clad aluminum strip<\/a>(CCA strip) is a new type of conductive material made by combining high-purity copper layer and aluminum core material through precision rolling or cladding technology. Multi-layer composite copper strip combines the advantages of copper and aluminum, and has the characteristics of excellent conductivity, light weight, good mechanical properties, etc.Photovoltaic welding ribbon<\/a>, power cables, electronic components and other fields are widely used.<\/p>

Conductivity: close to pure copper, ensuring power transmission<\/p>

High conductivity<\/p>

The outer layer of the composite copper strip is high-purity copper (99.9%+), and the conductivity reaches \u226598% IACS.<\/p>

The copper layer, as the main conductive path, can maintain good current transmission performance, which is close to the performance of pure copper welding strip under low frequency and direct current.<\/p>

Low resistance, reduced losses<\/p>

Due to the copper-clad aluminum composite structure, the overall resistance is reduced while maintaining good conductivity, and the resistance value is only slightly higher than that of pure copper 5%-8%<\/p>

Can effectively reducePhotovoltaic modules<\/a>Reduce the loss of current transmission and improve power generation efficiency<\/p>

Lightweight: Reduce weight and improve transportation and installation efficiency<\/p>

Significant weight reduction<\/p>

The density of aluminum is 2.7g\/cm\u00b3, while the density of copper is 8.9g\/cm\u00b3. The weight of multi-layer composite copper strip is about 40%-50% lower than that of pure copper strip.<\/p>

With the same length and specifications, copper clad aluminum tape can provide longer coil length, reducing transportation and installation costs.<\/p>

Lightweight photovoltaic modules<\/p>

Reduce the overall weight of photovoltaic modules, making installation easier, especially suitable for rooftop photovoltaic and large ground photovoltaic power stations<\/p>

Mechanical strength: Improve flexibility and tensile properties<\/p>

High tensile strength<\/p>

Through the precision rolling process, the copper layer and the aluminum core are firmly combined, and the tensile strength reaches\u2265150MPa<\/strong>, capable of maintaining mechanical stability in harsh environments<\/p>

Raytron<\/a>The multi-layer composite copper strip produced by the company has improved the fatigue resistance and bending resistance of the welding strip by optimizing the composite process.<\/p>

Good bending performance<\/p>

The multi-layer composite copper strip has been rolled and annealed for many times, and has excellent bending performance, which is suitable for high-frequency bending and welding applications.<\/p>

Able to withstand 90\u00b0-180\u00b0 bending without delamination or breakage<\/p>

Thermal expansion matching: reducing the risk of delamination<\/p>

Difference in expansion coefficient between copper and aluminum<\/p>

The thermal expansion coefficient of copper is 16.5\u00d710\u207b\u2076\/\u00b0C, and the thermal expansion coefficient of aluminum is 23\u00d710\u207b\u2076\/\u00b0C, which is quite different.<\/p>

In high temperature environments, copper-clad aluminum strips can effectively reduce the risk of delamination and peeling caused by thermal expansion mismatch by optimizing the bonding interface.<\/p>

Thermal stability<\/p>

After special heat treatment and composite annealing process, the multi-layer composite copper strip can maintain good bonding strength in high temperature and large temperature fluctuation environment<\/p>

Welding performance: strong welding, reducing the phenomenon of cold welding<\/p>

Surface tinning enhances welding effect<\/p>

The surface of the multi-layer composite copper strip is treated by hot-dip tinning to form a uniform and highly adhesive tin layer, which improves welding reliability.
Can effectively prevent the tin layer from falling off, cold soldering, loose soldering and other problems<\/p>

Adapt to various welding processes<\/p>

Compatible with various welding methods such as reflow soldering, ultrasonic soldering and laser soldering, and can maintain excellent soldering strength<\/p>

Anti-corrosion performance: Enhance environmental adaptability<\/p>

Aluminum core corrosion protection<\/p>

The aluminum core is easily corroded when exposed to moisture or electrolyte, but the copper coating can form an effective protective barrier to prevent the aluminum core from oxidizing.<\/p>

Ruichuang's multi-layer composite copper strip adopts hot-dip tinning process, which further enhances the corrosion resistance of the tin layer and is suitable for long-term use.<\/p>

Wet environment protection<\/p>

The tin-plated copper-clad aluminum strip can effectively resist moisture, acid, alkali and corrosive environments, extending the service life of photovoltaic modules.<\/p>

Economical: reduce costs and increase efficiency, reduce overall costs<\/p>

Material cost advantage<\/p>

The price of aluminum is much lower than that of copper. The cost of multi-layer composite copper strip is about 20%-30% lower than that of pure copper strip, which significantly reduces the overall cost of photovoltaic welding strip.
Reduce the material procurement costs of manufacturers and increase profit margins<\/p>

Length advantage<\/p>

Due to the lower density of aluminum, at the same weight, the length of copper-clad aluminum strip is about 2.5 times that of pure copper strip, effectively reducing transportation and storage costs.<\/p>

Reliability: Improved long-term stability<\/p>

Long-term performance<\/p>

After rigorous durability testing and reliability verification, the multi-layer composite copper tape can maintain long-term stability for more than 10-15 years during the use of photovoltaic modules.<\/p>

Good environmental adaptability<\/p>

It is suitable for extreme environments such as high temperature, high humidity, and large temperature difference between day and night. It has remarkable reliability, especially for photovoltaic power stations, electric vehicles, communication equipment, etc.<\/p>","protected":false},"excerpt":{"rendered":"

Multilayer composite copper strip, also known as copper clad aluminum strip (CCA strip), is a new type of conductive material made by combining high-purity copper layer and aluminum core material through precision rolling or cladding technology.<\/p>","protected":false},"author":1,"featured_media":9053,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[19],"tags":[],"class_list":["post-33501","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/33501","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/comments?post=33501"}],"version-history":[{"count":0,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/posts\/33501\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media\/9053"}],"wp:attachment":[{"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/media?parent=33501"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/categories?post=33501"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ray-tron.com\/en\/wp-json\/wp\/v2\/tags?post=33501"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}