What is H68 brass alloy?

Cold Working Performance: H68 brass offers good cold working performance and can be processed into various shaped products through rolling, drawing, stamping, etc.

Hot Working Performance: Within a certain temperature range, H68 brass also exhibits good hot working performance and can be processed through forging, casting, and other methods.

Welding Performance: H68 brass has good welding performance and can be joined using methods such as gas welding, resistance welding, and laser welding.

Get H68 Brass Spec Sheet

Material Name: H68 (Ordinary Brass)

Standard: (GB/T 5231-2001)

Characteristics and Scope of Application:

Possesses excellent plasticity (considered the best among brasses) and relatively high strength.

Good machinability, easy to weld, and very stable against general corrosion.

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

H68 is the most widely used variety of brass.

H68A contains trace amounts of arsenic, which prevents dezincification of the brass and improves its corrosion resistance.

H68 is used in the manufacture of cartridge cases.

Tensile Strength (σb): ≥ 370 MPa

Elongation (δ10): ≥ 15%

Elongation (δ5): ≥ 18%

Heat Treatment Specification:

Hot working temperature: 750–830°C

Annealing temperature: 520–650°C

Low-temperature stress relief annealing temperature: 260–270°C

Copper (Cu): 67.0–70.0%

Zinc (Zn): Balance

Lead (Pb): ≤ 0.03%

Phosphorus (P): ≤ 0.01%

Iron (Fe): ≤ 0.10%

Antimony (Sb): ≤ 0.005%

Bismuth (Bi): ≤ 0.005%

Note: Total impurities ≤ 0.3%

Density: Approximately 8.4 g/cm³, offering a moderate weight.

Melting Point: Approximately between 900°C and 940°C, providing good high-temperature resistance.

Thermal Conductivity: H68 brass has good thermal conductivity, leading to its wide application in heat conduction and heat dissipation devices.

Electrical Conductivity: Due to its high copper content, H68 brass exhibits good electrical conductivity, making it suitable for manufacturing electrical conductive components.

Strength: H68 brass has good strength, making it suitable for manufacturing parts and components with higher requirements.

Toughness: Due to its appropriate zinc content, H68 brass offers good toughness, helping to reduce the risk of fracture during processing.

Hardness: The hardness of H68 brass is moderate and can be adjusted through heat treatment or cold working to meet different engineering needs.

Ductility: H68 brass has good ductility, facilitating processing operations such as drawing and stamping.

Electrical Field: Used in manufacturing conductive components, wires, cables, sockets, etc.

Construction Field: Used in manufacturing door and window hardware fittings, plumbing pipe fittings, decorative materials, etc.

Manufacturing Industry: Used in manufacturing automotive parts, mechanical components, instruments and meters, bearings, etc.

Handicraft Production: Used in making handicrafts, sculptures, clocks and watches, etc.

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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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