H68 Brass Performance Characteristics

H68 brass is the most widely used variety among ordinary brasses, belonging to the copper-zinc alloy category. Its performance is very similar to that of H70, but it has a tendency for "season cracking" during cold working.

Get H68 Brass Spec Sheet

H68 brass is primarily composed of copper (Cu) and zinc (Zn), along with small amounts of other elements. The specific chemical composition (mass percentage %) is as follows: Cu content between 67–70%, Fe content ≤0.1%, Pb content ≤0.03%, Ni content ≤0.5%, Zn as the balance, and total impurities ≤0.3%.

Machining Performance

Excellent cold and hot working performance: Possesses good plasticity, performs well during cold stamping and hot forming, making it very suitable for producing complex-shaped parts. It can be used to make precision mechanical components such as gears, bearings, and screws.

Good machinability: Facilitates various machining operations, improving production efficiency and machining accuracy.

Easy to weld: Can be joined with other components through welding processes to form complete structures.

Corrosion Resistance

Strong resistance to general corrosion: Due to its high copper content, it maintains stability for extended periods in environments like water and air, making it suitable for products requiring long-term durability, such as water pipes and valves.

Risk of corrosion cracking: However, it is prone to corrosion cracking in ammonia atmospheres.

Hot working temperature: 750 – 830°C.

Annealing temperature: 520 – 650°C.

Low-temperature stress relief annealing temperature: 260 – 270°C. Proper heat treatment can further enhance the performance of H68 brass, improving its ability to adapt to various environments.

Get Dedicated Engineer Support

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.

Get Fast Quote & Logistics Plan