High-Conductivity Forged Copper Square Bars

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Product Specifications
Name： Forged Pure Copper Square Bar (Hot Forged Copper Square)
Standard： ASTM B124 / B133, UNS C11000 / C10100, RoHS Compliant, REACH Compliant
Material： C11000 (Electrolytic Tough Pitch Copper), C10100 (Oxygen-Free Electronic Copper)
Surface： Mill Finish, Optional Milled or Ground
Side Length： 20mm – 300mm (square cross-section)
Length： 500mm – 4000mm (custom cut-to-length available)
Product Features: Outstanding electrical and thermal conductivity · Enhanced mechanical strength through forging · Extremely dense structure with low porosity · Excellent ductility for further forming · Superior corrosion resistance · Refined grain for uniform properties · Ideal for high-current and heat transfer applications
Application Field: Electrical busbars and connectors, Grounding bars and electrodes, Heat sinks and cooling components, Power transmission parts, Forging blanks for intricate shapes, Marine and chemical equipment, Vacuum chamber components, Artistic forging and sculpture bases, High-pressure electrical contacts

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Forged Pure Copper Square Bar – Process & Quality Assurance Statement
Our forged pure copper square bars are manufactured via controlled hot forging to provide superior density, strength, and conductivity, outperforming standard extruded or rolled squares in demanding electrical and thermal roles.

Key process features

The forging process refines the material while preserving copper's natural advantages:
●Billet Preparation: Premium purity copper ingots are cut and inspected for consistent composition.
●Heating: Billets are brought to precise forging temperature for optimal flow without overheating.
●Hot Forging: Multiple hammer or press strokes shape the square section, closing internal voids and aligning grain flow for added toughness.
●Trimming & Cooling: Flash is removed, and controlled cooling prevents thermal stresses.
●Annealing: Stress-relief heat treatment restores full conductivity and ductility.
●Finishing: Bars are straightened and surfaces milled or ground to exact dimensions and flatness.
●Protection: Light anti-oxidation coating applied, followed by secure packaging for safe international delivery.

Quality control system

● Full traceability from raw ingot to finished square bar
● Comprehensive test reports and conductivity certificates supplied with each batch ● Sample retention ≥3 years for third-party analysis (SGS, BV, TÜV, etc.)
● 100% inspection of key attributes:
• Purity and oxygen levels (spectrometric testing)
• Mechanical properties (tensile, hardness, and electrical conductivity on samples)
• Dimensional precision (CMM and gauges; typical tolerance ±0.5mm on side)
• Surface and internal quality (visual + ultrasonic examination)
• Conductivity verification (typically >100% IACS)
● Internal standards exceed ASTM B124 requirements. Typical C11000 forged properties: Tensile strength ≥320 MPa (improved by forging), Electrical conductivity >101% IACS, Virtually pore-free dense structure.
● ISO 9001:2015 certified production ensures every forged pure copper square bar offers the reliability and performance your high-stakes projects demand.