Overview
Red Copper Special-Shaped Bars are precision-engineered copper profiles with non-standard cross-sections, typically containing 99.9% pure copper (Cu-ETP). These bars combine the inherent advantages of copper—excellent conductivity and formability—with customized geometries for specialized industrial applications. Unlike standard round or flat copper bars, special-shaped profiles are extruded or drawn to create complex forms like channels, T-sections, or trapezoids. The manufacturing process involves continuous casting followed by cold drawing to achieve precise dimensional control. The oxygen-free variant (Cu-OF) is preferred for high-temperature applications where hydrogen embrittlement is a concern. These bars serve as critical components in electrical systems, heat transfer equipment, and architectural installations where standard shapes cannot meet design requirements.
Physical and Chemical Properties
With a face-centered cubic crystal structure, red copper bars exhibit exceptional ductility (≥45% elongation) and can withstand significant cold working without cracking. The electrical conductivity reaches 101% IACS (International Annealed Copper Standard), while thermal conductivity stands at 401 W/(m·K) at 20°C—both among the highest of all industrial metals. Chemically, copper forms a protective oxide layer that resists atmospheric corrosion, though it tarnishes when exposed to sulfur compounds. Special-shaped bars maintain these properties while offering enhanced mechanical stability due to their engineered profiles. Hardness ranges from 40-150 HV depending on temper, with tensile strengths of 200-360 MPa achievable through cold working.
Main Applications
In electrical engineering, these bars serve as busbars in switchgear and transformer windings, where their custom shapes optimize space utilization and current-carrying capacity. The automotive industry uses them for battery interconnects and grounding straps in electric vehicles. Industrial heat exchangers employ special-shaped copper bars for their thermal transfer efficiency in condenser tubes and heat sinks. Architectural applications include decorative facades and moisture-resistant building components. Emerging uses include RF shielding in electronics and custom electrodes for resistance welding systems.
Safety and Storage
Copper bars pose minimal health risks in solid form but require precautions during machining. Grinding or cutting produces fine dust that may cause metal fume fever if inhaled—local exhaust ventilation and NIOSH-approved respirators are recommended. The material is non-flammable but may accelerate combustion of other materials in fire situations. Storage should prevent surface oxidation by minimizing exposure to humidity and corrosive vapors. Stacking should avoid deformation, with protective caps on sharp edges. For long-term storage, anti-tarnish paper wrapping or vapor corrosion inhibitors (VCIs) are advisable. Copper is fully recyclable without property degradation, aligning with circular economy principles.
B2B Procurement Guide
Technical specifications should include: 1) Dimensional tolerances (typically ±0.1mm for precision applications), 2) Temper designation (soft, half-hard, hard), 3) Surface finish (mill finish, polished, or coated), and 4) Certification requirements (ASTM B187 for general purpose or IEC 60172 for electrical grades). Bulk purchases (5+ metric tons) commonly secure 10-15% price discounts. Just-in-time delivery is feasible due to copper's excellent inventory turnover rates. For specialized alloys like deoxidized copper (Cu-DHP), lead times may extend to 6-8 weeks. Always verify supplier certifications for conflict-free sourcing per the OECD Due Diligence Guidance.
Related Manufacturers
- 主营：Q345D厚壁无缝管、合金管、高压锅炉管、石油裂化管、GB5310无缝钢管、低温管、高压管、镀锌钢管、方管、镀锌方管、方矩管、欧标方矩管、无缝方管、矩形管、大口径方管、B热浸镀锌无缝管、友发镀锌钢管、20G高压锅炉管、Q345B无缝钢管、20G无缝钢管、冷拔无缝钢管、16Mn无缝管、热浸镀锌无缝管
- 主营：软连接、铜母线、黄铜管、紫铜排、紫铜板、紫铜棒、紫铜管、紫铜带、镀锡铜排、空调紫铜管、紫铜箔、黄铜排、黄铜棒、铜套
- 主营：空调铜管、黄铜管、黄铜板、紫铜管、紫铜板、紫铜排、紫铜棒、紫铜丝、镀锌铜排、接地铜排、紫铜带、黄铜排、紫铜线、T2紫铜排、铜包铝排、T2紫铜板、T2紫铜棒、紫铜带加工、机房汇流铜排、紫铜管折弯加工、黄铜带、镀锡铜母线、TP2脱脂铜管、TMY镀锡铜母线、H65黄铜棒
- 主营：铜覆钢扁钢、铜覆圆钢、铜覆钢接地棒、铜排、离子接地极、接地引出装置、铜端子、镀铜扁钢、镀铜接地棒、镀铜圆钢、镀锡铜扁钢、镀锡铜圆钢、镀锡铜接地棒、铜覆钢棒、镀铜圆管、热熔焊模具、焊粉
- 主营：镍基合金板、铜镍合金管、高温合金管件、T2紫铜管、蒙乃尔400、因科洛伊800、英科耐尔600、哈氏合金C276、HAl77-2黄铜管、B30铜镍无缝管、TP2螺纹管、B10铜镍法兰、C70600铜镍板、C71500铜镍管、冷凝换热管、冷凝器用铜镍管、船舶用铜镍合金管件、化工用合金管、换热器用铜管、铜镍三通/异径管件、翅片管
- 主营：紫铜管、紫铜盘管、空调铜管、冷凝器铜管
- 主营：止水铜板、铜软连接、空调铜管、紫铜排、紫铜管、紫铜棒、紫铜板、紫铜带、黄铜排、铝排、t2紫铜排、机房铜排、电工铜排、汇流铜排、异形铜排、接地铜排、地铁铜排、黄铜管、黄铜板、黄铜带、覆塑铜管、铜母线、红铜管、冷媒铜管、模具焊药
- 主营：空调铜管、黄铜管、黄铜板、紫铜管、紫铜板、紫铜排、紫铜棒、紫铜带、镀锡铜排、黄铜排、TU2紫铜板、C11000紫铜排、T2紫铜带、T2铜排、C1011紫铜板、T2紫铜棒、锡青铜棒、铜母线、止水铜板、T2空调铜管、镀锡铜母线、T2止水铜片、T2铜板、裸铜编织带、镀锡扁铜线
- 主营：铝管、铝棒、铝板、紫铜棒、紫铜管、紫铜板、紫铜盘管、无缝铝管、铜管、铜板、铜棒、黄铜管、黄铜棒、铝型材、铝方管、黄铜型材
- 主营：铜辫子、铜编织、铜导电带、软铜排、铜软连接、编织线、导线镀锡、铜编织带软连接、铜线扁平、接地扁平、镀锡防雷、铜接地线、铜接线端子、铜母线伸缩节、铜伸缩节、铜带软连接、铜箔软连接、软连接、导电带、铜编织导电带、铜软母线、母线软连接、母线伸缩节、铜皮软连接、铜片软连
- 主营：铝管、铝棒、铝板、铝排、铝型材、无缝铝管、铝盘管、铝方管、铝合金管、合金铝棒、铝方棒、合金铝板、铝合金板、花纹铝板、挤压铝管、铜管、铜棒、铜板、铜盘管
- 主营：紫铜板、接地汇流铜排、紫铜管、国标冷轧铜板、黄铜管
- 主营：红铜条、预埋件、铜零件、纯铜排、紫铜带、接线排、预制桩、碲铜材、磷铜板、铍铜带、碲铜件、配电柜、铜棒管、机加工、法兰盘、超薄板、铍铜棒、变压器、铍铜板、连接件、黄铜材、黄铜件、锡青铜、铜合金、青铜材
- 主营：变频器、接线夹、汽车电池、硬母排、电机母排、复合叠层母排、风电光伏母排、缠绕绝缘母排、电能质量母排、紫铜导电软母排、挤塑材料、氢能汽车、电气连接件、高压充气柜、导电焊接片、电池包连接片
- 主营：铝管、铝棒、铝丝、铝排、铜排、黄铜排、铜管、铜棒、铜丝、铜板、耐候板、纯铁棒、纯铁板、无缝铝管、锻造铝管、保温铝板、花纹铝板、镀膜铝丝、铝镁合金丝、黄铜带、黄铜棒、黄铜管、铜套、瓦楞铝板