H68 Brass Hexagon Bar

H68 brass hexagon bar is an industrial profile primarily composed of copper-zinc alloy, with a controlled copper content between 67.0% and 70.0%. It combines comprehensive mechanical properties of high strength and excellent plasticity. The material features outstanding electrical conductivity, superior machinability, and good weldability. It exhibits stable processing characteristics within the hot working temperature range of 750–830°C and the annealing temperature range of 520–650°C. As an industrial foundational material, it is widely used in heat exchangers, condenser tube structural components, and shipbuilding.

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Main composition includes 67.0%–70.0% copper, with zinc as the base remainder element, meeting precision machining requirements.

The hardness range covers half-hard state standards; material properties can be adjusted through heat treatment processes.

Mechanical properties achieve tensile strength above 370 MPa and an elongation rate not less than 18%.

Hot pressure working temperature range is 750–830°C, meeting forming needs such as rolling and forging.

Recommended annealing process temperature is 520–650°C; stress relief annealing temperature is 260–270°C.

Machinability evaluation value exceeds 85%, suitable for precision machining.

Welded joint strength coefficient can reach over 90% of the base metal.

Thermal Engineering Equipment Field: Manufacturing high-temperature pressure-bearing components such as heat exchangers and condenser tubes.

Machinery Manufacturing Field: Processing connecting parts like bolts and nuts that require balanced strength.

Shipbuilding Industry: Used in the manufacturing of ship thermal engineering equipment.

Cold drawing forming can achieve high surface finish.

Suitable for vibration working environments.

Surfaces can undergo tin plating or nickel plating treatments.

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Our factory is equipped with an advanced full-process copper processing production line, specializing in the manufacturing of high-precision copper plates, copper tubes, copper rods, copper wires, and copper strips. The core of our production includes continuous casting and rolling units, precision extrusion lines, high-speed cold rolling equipment, multi-roll precision rolling mills, tube drawing systems, and intelligent stretching production lines. We are also outfitted with comprehensive inspection equipment such as spectrometers and online eddy current flaw detectors, ensuring full-process control from smelting and casting, hot processing, to cold finishing. Our products achieve an accuracy of up to ±0.01mm, with an annual production capacity exceeding 50,000 tons. They are widely used in power, electronics, transportation, and high-end manufacturing sectors. Certified with international standards such as ISO9001 and IATF16949, we are capable of providing global customers with one-stop copper material solutions.

We implement a graded and customized packaging system: copper plates are double-wrapped with moisture-proof paper and vapor corrosion inhibitor film before being placed in reinforced wooden crates, which are filled with cushioning materials and equipped with impact-resistant corner protectors; copper tubes and rods are sealed with plastic end caps, wrapped with PE protective film, and then layered into steel-frame logistics containers, with EPE pearl cotton separating each layer; copper wires are automatically wound onto spools, vacuum-sealed, covered with waterproof film, and secured on customized iron-wood pallets; copper strips are wrapped with non-woven fabric, coiled onto high-strength steel cores, and placed into waterproof composite material coils with desiccants inside. All packaging passes ISTA-3A transport testing, and the outer boxes are labeled with international hazardous material identifiers, moisture warnings, and scannable logistics codes, ensuring the cargo withstands moisture, impact, and chemical erosion during global transportation.

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