What is H62 brass?
H62 brass is a high-quality copper-zinc alloy. It contains 62% copper and 38% zinc. H62 brass has great corrosion resistance, mechanical strength, and workability. That's why people use it in all kinds of industrial applications.
Equivalent Grades of H62 Brass
| Country/Standard | Standard Designation | Common Name / Description |
|---|---|---|
| China (GB) | H62 | - |
| USA (ASTM/UNS) | C28000 | Muntz Metal (60.0-63.0% Cu) |
| Japan (JIS) | C2800 | Brass 60% |
| European Union (EN) | CuZn40 | CW508N (Numerical Designation) |
| International (ISO) | CuZn40 | - |
| United Kingdom (BS) | CZ109 | - |
| Germany (DIN) | CuZn40 | 2.0360 (Material Number) |
Products Description
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Core Application Fields
Building Hardware: Door and window fittings, locks, plumbing fittings.
Electronics and Electrical Appliances: Heat exchangers, conductive terminals, switch contacts.
Mechanical Manufacturing: Screws, rivets, washers, stamped parts.
Decorative Materials: Metal mesh, decorative strips, crafts.
Industrial Equipment: Condenser tubes, heat exchangers (must be protected from seawater corrosion).
Processing Considerations
Annealing Process: Requires annealing at 550-650℃ after cold working to eliminate internal stress and prevent cracking.
Welding Requirements: Preferably use argon arc welding to reduce the zinc evaporation and pore defects.
Corrosion Protection: Avoid direct exposure to seawater or ammonia environments; it is recommended to add a coating or plating.
H62 Brass vs. 360 Brass, What are the Differences?
Composition
The primary difference between H62 brass and 360 brass lies in their chemical makeup:
H62 Brass:
Copper (Cu): 60–63%
Zinc (Zn): 37–40%
Other elements (e.g., lead, iron): Minimal or trace amounts
H62 is classified as a type of alpha-beta brass, meaning it has both alpha and beta phases, which gives it a balance of strength and ductility.
360 Brass (Free-Cutting Brass):
Copper (Cu): 60–63%
Zinc (Zn): ~35.5%
Lead (Pb): ~2.5–3%
Other elements: Trace amounts
360 brass is specifically a free-machining brass, designed for high machinability due to its lead content.
2. Mechanical Properties
| Property | H62 Brass | 360 Brass |
|---|---|---|
| Tensile Strength | 372–540 MPa | 380–620 MPa |
| Hardness (Brinell) | ~90–120 | ~100–150 |
| Elongation (%) | ~20–45 (depending on temp) | ~10–30 (lower ductility) |
| Machinability | Moderate | Excellent (100% rated) |
H62 Brass: Offers good strength, ductility, and corrosion resistance, making it suitable for forming and bending operations.
360 Brass: Known for its exceptional machinability due to the added lead, but it is slightly less ductile compared to H62.
Applications
H62 Brass: Ideal for applications requiring forming, bending, or drawing. Common uses: Radiator fins, heat exchangers, pipes, and decorative objects due to its good corrosion resistance and workability. Less suited for machining compared to 360 brass.
360 Brass: Perfect for high-precision machining and complex geometries. Common uses: Screws, nuts, gears, valve stems, and fittings. Its lead content makes it unsuitable for potable water or food-related applications in some regions due to environmental and safety regulations.
Our factory
Our modern production base is equipped with advanced full-process production lines dedicated to the manufacturing of copper and copper alloy products. The factory features precision smelting, continuous casting, high-pressure extrusion, high-speed rolling, and precision cutting equipment, ensuring strict control over every step from copper ingot to finished product. We possess strong R&D and customization capabilities, enabling us to produce various specifications and tempers of copper tubes, plates, rods, wires, and ultra-thin foils in accordance with international standards (such as ASTM, EN, JIS) and specific customer requirements. Our products are widely used in various industries, including refrigeration, electronics, power, transportation, and construction.
Copper product packaging
We fully understand that secure packaging is essential for the flawless delivery of products. Tailored to the characteristics of different products, we employ customized professional packaging solutions: copper tubes and rods are typically secured with anti-rust inner liners and sturdy wooden crates or iron-frame boxes to prevent impact and deformation during transit; copper plates, strips, and foils are first covered with protective film, placed in a dry environment, wrapped with waterproof paper and moisture-proof materials, and finally packed into reinforced plywood crates or steel coil boxes to effectively resist moisture and mechanical damage; wires are neatly wound onto wooden or steel reels and firmly strapped. All packaging is clearly labeled and compliant with export standards, ensuring that your goods maintain their excellent factory condition even after long-distance sea transportation and multiple handlings.
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