What is H62 Brass?
H62 brass is a copper-zinc alloy, with copper as the primary component (60.5%–63.5%) and zinc comprising the remainder. It is classified as an alpha-beta brass, meaning it contains both the alpha and beta phases of the Cu-Zn solid solution. This dual-phase microstructure provides a balance of strength, ductility, and corrosion resistance, making H62 brass ideal for a wide range of applications.
The "H" in H62 refers to the pinyin initial for "Huang" (meaning yellow in Chinese), while "62" denotes the average copper content. H62 is categorized as a common brass, but it can also be alloyed with trace elements to enhance specific properties.
H62 Brass Chemical Composition
The chemical composition of H62 brass is as follows:
| Element | Content (%) |
|---|---|
| Copper (Cu) | 60.5–63.5 |
| Zinc (Zn) | Remainder |
| Lead (Pb) | ≤ 0.08 |
| Iron (Fe) | ≤ 0.15 |
| Phosphorus (P) | ≤ 0.01 |
| Antimony (Sb) | ≤ 0.005 |
| Bismuth (Bi) | ≤ 0.002 |
| Impurities | ≤ 0.5 |
H62 Brass Material Properties
1. Physical Properties
H62 brass exhibits the following physical characteristics:
Density: ~8.5 g/cm³
Thermal Conductivity: ~120 W/m·K
Electrical Conductivity: ~27% IACS (International Annealed Copper Standard)
2. Mechanical Properties
H62 brass offers a combination of strength, ductility, and machinability. Its mechanical properties include:
Tensile Strength: 372–540 MPa
Yield Strength: 250–360 MPa
Elongation: ≥30% (depending on processing state)
Hardness: 85–120 Vickers (strip)
3. Processing Properties
Hot Working Temperature: 650–850°C
Annealing Temperature: 520–650°C
Cold Working: Excellent plasticity, suitable for bending, drawing, and stamping.
Machinability: Moderate (not as high as free-cutting brasses like 360 brass).
Weldability: Good brazing and welding performance.
4. Corrosion Resistance
H62 brass performs well in atmospheric and freshwater environments but is prone to corrosion in harsh media like hydrochloric acid or ammonia.
H62 Brass Equivalent Grades
H62 brass has equivalents in various international standards:
| Standard | Grade |
|---|---|
| China (GB) | H62 |
| Japan (JIS) | C2801 |
| Germany (DIN) | CuZn37 |
| USA (ASTM) | C27400 |
| Europe (EN) | CW508L |
H62 Brass Applications
H62 brass is used across numerous industries due to its strength, corrosion resistance, and machinability. Key applications include:
1. Electronics and Electrical
Wires, cables, plugs, and sockets
Switch contacts and terminal blocks
Heat dissipation components
2. Hardware Products
Locks, handles, hinges, and valves
Faucets and decorative fittings
3. Automotive and Aerospace
Radiators, brake system components, and connectors
Air-conditioning compressor valve plates
4. Building and Construction
Door/window hardware, curtain wall structures
Decorative elements
5. Precision Machinery
Springs, gears, and bushings
Instrument housings and watch components
6. Marine and Shipbuilding
Components exposed to seawater, such as hull fittings
7. Crafts and Jewelry
Artistic sculptures and decorative objects
FAQ
Is H62 brass machinability?
More importantly, H62 brass has better machinability than many other brass alloys, which means that manufacturers can produce high-quality parts more efficiently, reducing waste and costs in the production process.
What is H62 brass strip used for?
H62 brass strip is widely used in architectural decoration, electrical terminals, heat exchangers, hardware components, and ammunition casings due to its good strength, formability, and corrosion resistance.
What is the chemical composition of H62 brass strip?
The typical chemical composition of H62 brass strip is about 60.5-63.5% Copper (Cu) and the remainder Zinc (Zn), with strict control over impurities like Lead (Pb) and Iron (Fe).
What is the equivalent grade of H62 brass strip in ASTM standard?
H62 brass strip is equivalent to C28000 (Alloy 280 or Muntz Metal) in the ASTM/UNS system.
Can H62 brass strip be used for machining parts?
Yes, H62 brass strip has fair machinability. It is suitable for stamping, bending, and forming operations, though it is not a free-machining grade like leaded brass.
What are the standard tempers available for H62 brass strip?
H62 brass strip is commonly supplied in soft annealed (O), half-hard (H02), hard (H04), and spring hard (H08) tempers to meet different mechanical property requirements.
Products Description
We specialize in providing a comprehensive range of materials, including pure copper (C11000), brass (C26000, C28000), and phosphor bronze, available in various forms such as strips, sheets, tubes, and coils. Equipped with advanced rolling mills, continuous casting lines, and precision slitting equipment, we offer fully customizable dimensions, tempers (from soft annealed to full hard), and surface finishes (mill, bright, brushed) to meet specific customer requirements. Our integrated operation-from smelting and alloying to final inspection-ensures complete traceability and consistency. Certified to international standards such as ISO 9001, we implement rigorous SPC quality control at every stage.
Products Description
Our export packaging system is specifically designed for high-value copper products, utilizing multi-layered industrial-grade protection. The standard process involves: wrapping the product with VCI (Vapor Corrosion Inhibitor) paper to effectively prevent salt spray corrosion during sea transportation; inserting reinforced wooden shafts into coil inner diameters and attaching high-strength plastic edge protectors to prevent edge damage; securely fastening the entire package to IPPC-marked fumigated wooden pallets with cross steel strapping for structural integrity; and finally, sealing the package entirely with waterproof stretch film to ensure moisture and dust resistance. All packaging is clearly marked with shipping labels and safety warnings, and combined with customized loading plans, maximizes container space utilization.
