Flat Contact Surfaces for Stable Connections
Our square copper rod has a square cross-section with four flat sides. The corners can be rounded or sharp. Customers specify their preference. The flat surfaces provide large contact areas. Larger contact area means more stable current flow. This is important for high-current connections. Our team maintains very high straightness standards for this product. Even a slight bend creates gaps during assembly. Our straightening equipment keeps the rod perfectly straight. We also check for twist. Square rods must align properly with mating parts. Our workers use precision gauges to verify straightness on every batch.
Stock Sizes and Material Composition
We stock square copper rod in Φ6, Φ8, Φ10, Φ18, Φ20, and Φ22. The numbers represent the side length in millimeters. The material is T2 copper. Production follows GB/T5585.1-2026. Copper purity reaches Cu≥99.90%. Total impurities stay below 0.10%. Conductivity is ≥97.3% IACS. Resistivity at 20°C stays ≤0.0177 Ω·mm²/m. Density is 8.9 g/cm³. Tensile strength ranges from 220 to 260 MPa. Yield strength exceeds 170 MPa. Hardness is between 65 and 90 HV. Elongation is 17% or higher.
Where Square Rods Excel
Square rods are common in terminal blocks and connection bars. The flat faces provide reliable surface contact. This improves current carrying capacity. Many electrical panels use square rods for busbar connections. The square shape also holds position better than round rods. It does not roll. This helps during assembly. Our customers in the electrical equipment industry order square rods regularly. We also supply manufacturers of custom copper connectors. The square profile is favored for applications where alignment matters. It also works well for components that need to be clamped or bolted.
Production and Order Information
Our CNC programs keep every rod within stable dimensional limits. We do visual checks before packaging. Third-party inspection is welcome. Our raw material inventory stays well-stocked. Standard sizes ship within one week. Custom sizes take one to two weeks. The minimum order is 1000 kilograms. We allow mixed specifications in one order. We support EXW and FOB terms. USD, EUR, and CNY are accepted.
Technical Parameters
|
Parameter |
Value |
|
Material Grade |
T2 Copper (C11000) |
|
Copper Purity |
Cu≥99.90% |
|
Standard |
GB/T5585.1-2026 |
|
Electrical Conductivity |
≥97.3% IACS |
|
Resistivity (20°C) |
≤0.0177 Ω·mm²/m |
|
Density |
8.9 g/cm³ |
|
Tensile Strength |
220–260 MPa |
|
Yield Strength |
≥170 MPa |
|
Hardness |
65–90 HV |
|
Elongation |
≥17% |
|
Stock Sizes |
Φ6, Φ8, Φ10, Φ18, Φ20, Φ22 (side length in mm) |
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