What is H62 brass?
H62 brass strip is a common copper alloy. Its main components are copper and zinc, with the Cu content ranging from 60.5% to 63.5%. This alloy has a range of excellent properties. H62 brass belt has good mechanical properties, high strength and hardness, can withstand large pressure and bending stress, and is widely used in various mechanical parts, tools, medical equipment and other fields.
Performance Characteristics of H62 Brass
- Mechanical Properties
- Strength and Hardness: H62 brass possesses high strength and hardness, allowing it to withstand greater external forces without easily deforming compared to pure copper. This makes it excellent in applications requiring resistance to pressure and friction. For example, in manufacturing mechanical parts, it ensures that parts maintain stable shape and dimensions over long-term use, reducing damage caused by external forces.
- Toughness: H62 brass also exhibits good toughness, meaning it is not easily broken under impact. This characteristic allows for safe use in environments that may experience sudden impacts, such as as connectors in mechanical equipment subject to significant vibration.
- Physical Properties
- Electrical Conductivity: While H62 brass's electrical conductivity is not as high as pure copper, it still possesses good conductivity. In electrical applications where a certain level of conductivity is required but extremely high conductivity is not necessary, it is an economical and practical choice. For example, in common electrical switches and sockets, H62 brass rods can effectively conduct current.
- Thermal Conductivity: It also has good thermal conductivity, enabling rapid heat transfer. This property makes it suitable for use in equipment requiring heat dissipation, such as radiators and heat exchangers.
- Chemical Properties
- Corrosion Resistance: H62 brass exhibits a certain degree of corrosion resistance, remaining relatively stable in acidic and alkaline environments and humid air. This allows for its use in outdoor environments or those with a certain risk of corrosion, reducing damage and replacement costs caused by corrosion. However, its corrosion resistance is still limited compared to some special corrosion-resistant alloys, requiring additional protective measures in highly corrosive environments.
- Oxidation Resistance: At room temperature, H62 brass has good oxidation resistance, and its surface is not easily oxidized. This helps maintain its appearance and performance stability, extending its service life.
Thermal Properties
In terms of thermal properties, H62 brass exhibits excellent thermal and electrical conductivity. Its thermal conductivity reaches 110 W/(m·K), approximately three times that of low-carbon steel. This characteristic makes it particularly suitable for manufacturing electrical components requiring rapid heat dissipation. Experimental data shows that when the zinc content is controlled within the range of 38-42%, the alloy's conductivity remains above 28% IACS (International Annealed Copper Standard). Notably, its coefficient of linear expansion is 20.6 × 10⁻⁶/℃ (20-300℃), close to that of ordinary glass. This compatibility makes it an ideal choice for sealing components in vacuum devices.
Mechanical Properties
In terms of mechanical properties, H62 brass has a tensile strength of 330-450 MPa, an elongation of approximately 35%, and a hardness of HRB 55-75. Through cold working hardening, its strength can be increased to over 600 MPa, but this will correspondingly reduce its ductility. Research data shows that when the deformation reaches 30%, the material's yield strength increases by approximately 40%, and this adjustable mechanical property provides flexible options for different application scenarios. In terms of fatigue performance, its conditional fatigue limit is approximately 180 MPa (10⁷ cycles), superior to most aluminum alloys.
Electrical Properties
From an electrical perspective, H62 has a volume resistivity of approximately 6.5 × 10⁻⁸ Ω·m, which, while lower than pure copper, still meets most conductivity requirements. In practical applications, its contact resistance stability is outstanding; after 1000 hours of testing in a humid environment, the contact resistance change rate does not exceed 15%. This stable electrical contact performance gives it an irreplaceable advantage in applications with frequent switching, such as relays and switches.
Inquire about H62 Brass Pricing & Samples
H62 Brass vs. 360 Brass, What are the Differences?
1. 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.
3. 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.
4. Corrosion Resistance
H62 Brass: Good corrosion resistance in neutral or mildly corrosive environments. More resistant to dezincification compared to 360 brass (due to lower lead content).
360 Brass: Decent corrosion resistance but more prone to dezincification (selective leaching of zinc in corrosive environments). Not ideal for applications exposed to water or high humidity for extended periods.
Choose H62 Brass if: You need a material for forming, bending, or drawing. Corrosion resistance and environmental safety are priorities. Cost is a concern.
Choose 360 Brass if: Machinability is the primary requirement. You are producing precision components like screws or fittings. Dezincification is not a concern in your application.
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.
Get Fast Quote & Logistics Plan
