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.
What is H62 brass strip used for?
| Industry / Sector | Specific Applications |
|---|---|
| Architectural Hardware & Decoration | Door/window hinges, locks, latches, handles, nameplates, decorative trim, kick plates, bathroom fixtures. |
| Electrical & Electronics | Electrical connectors, terminals, conductive springs, RFI shielding, switch components, battery contacts. |
| Automotive & Transportation | Radiator cooling fins, heat exchanger components, decorative interior trim, lamp housings, minor electrical components. |
| Consumer Hardware & General Engineering | Zippers, snap fasteners, jewelry findings, musical instrument components, stampings, washers, springs, and custom hardware. |
| Plumbing & Fluid Systems | Valve diaphragms, plumbing fixture decorations, non-critical gaskets (for cold water). |
Chemical Composition
The chemical composition of Brass H62 is characterized by a high copper content, with zinc as the principal alloying element. The typical composition is approximately 61.5% to 63.5% copper and the remainder zinc. Trace elements such as lead (Pb), iron (Fe), and silicon (Si) may be present in minute quantities, affecting the alloy's properties slightly. The composition of H62 is regulated by standards such as GB/T 5231 in China, which ensures consistency in its application.
Mechanical Properties
H62 brass is known for its excellent mechanical properties, which include a good balance between strength and ductility. The alloy has a typical tensile strength ranging from 300 to 400 MPa, with an elongation at break of about 40% to 60%. These properties can be tailored through various heat treatment processes, such as annealing, which can soften the alloy and improve its workability. The hardness of H62 brass, typically measured on the Brinell scale, can vary depending on the phase distribution and the degree of cold working it has undergone.
Electrical Properties
H62 brass has good electrical conductivity, although it is lower than that of pure copper. The electrical conductivity of H62 brass is typically around 28% IACS (International Annealed Copper Standard), which is sufficient for many electrical and electronic applications, such as connectors and terminals. The presence of zinc, while lowering the conductivity compared to pure copper, also improves the alloy's mechanical strength, making it a better choice for components that require both electrical and mechanical performance.
Corrosion Resistance
The corrosion resistance of H62 brass is one of its most valued properties. The alloy exhibits good resistance to atmospheric corrosion, seawater corrosion, and various other environments. The α-phase is particularly resistant to corrosion, while the β-phase is slightly less so. The alloy's resistance to dezincification, a form of corrosion where zinc is selectively leached out of the alloy, is adequate for most applications, although it may require additional protective measures in highly aggressive environments.
H59 vs H62 Comparison Table
| Property | H59 (Cu ≈ 59%) | H62 (Cu ≈ 62%) |
| Composition (Cu/Zn) | Lower Cu | Higher Cu |
| Microstructure | alpha + beta (more beta) | Primarily alpha (less beta) |
| Machinability (Chips) | Excellent (Short, Brittle) | Good (Longer, Curled) |
| Ductility (Elongation) | Lower | Higher |
| DZR Susceptibility | High Susceptibility | Moderate Susceptibility |
| Surface/Plating Consistency | Acceptable | Better |
| Material Cost | Lower | Slightly Higher |
| Typical Use | High-volume Lathe Parts | Water/Outdoor Contact, Aesthetic Parts |
H59 vs H62 Mechanical Properties
| Property | H59 Brass | H62 Brass | Impact on Final Part and Processing |
| Strength/Hardness | Slightly Higher | Balanced / Slightly Lower | H59: Better for structural rigidity; H62: Better for cold forming. |
| Ductility (Elongation) | Lower (Brittle) | Significantly Higher | H59: Minimal cold working allowed; H62: Suitable for riveting, flaring, or light bending. |
Our product range
1. Pure Copper (Sheet, Tube, Wire)
Primary Grades: T1 (C11000), T2 (C10100). We prioritize C11000 (T1) for its excellent conductivity.
Standards: ASTM B152 (Sheet), ASTM B75/B88 (Tube), ASTM B1/B3 (Wire), EN, JIS, GB/T.
Typical Sizes:
Tube: OD 6mm – 200mm.
Sheet: Thickness 0.5mm – 50mm.
Wire: Diameter 1.0mm – 10mm.
2. Phosphorus Deoxidized Copper (Tube, Sheet)
Primary Grades: TP1 (C12000 / CW023A), TP2 (C12200). Ideal for welding and plumbing.
Standards: ASTM B188, ASTM B75/B88, EN 12451, JIS H3300.
Typical Sizes:
Tube: OD 8mm – 150mm.
Sheet: Thickness 1.0mm – 30mm.
3. Brass (Strip & Coil)
Primary Grades: H96, H68, H62 (CuZn37 / C28000). We strongly recommend H62 for its excellent balance of strength and machinability.
Standards: ASTM B36, ASTM B134, EN 1652, JIS H3100.
Typical Sizes:
Strip/Coil: Thickness 0.1mm – 3.0mm, Width up to 600mm.
Get the complete product catalog
Our factory
Our facility is equipped with industry-advanced continuous casting and rolling production lines, precision rolling mills, multi-pass drawing units, and automated forming equipment, enabling efficient and stable transformation from copper rods to finished products. Our core machinery allows us to flexibly manufacture a full range of grades-including pure copper (e.g., C11000/T1), phosphorus deoxidized copper (e.g., C12200/TP2), and brass (e.g., H62)-in the form of sheets, tubes, rods, strips, and wires. We also provide tailored processing services such as cutting, slitting, and precision finishing.
