H59 and H62 are two common materials. They both perform well in many applications, but in some areas, their respective characteristics determine their applicability. Their respective chemical compositions, mechanical properties, corrosion resistance, thermoelectric properties, and costs are different. Therefore, when choosing these two alloys, you need to weigh them according to the specific application requirements.
| Comparison Items | H59 Brass | H62 Brass |
| Differences In Chemical Composition | Copper content is about 57%-60% , zinc content is about 40%-43% | Copper content is about 60.5%-63.5% , zinc content is about 36.5%-39.5% |
| Mechanical Properties | Strength: 500MPa , hardness: higher elongation 10%-20% | Strength: 400-500MPa , hardness: lower elongation 20%-30% |
| Corrosion Resistance | General corrosion resistance, suitable for general environment | Stronger corrosion resistance, adaptable to more complex environments |
| Thermal Conductivity And Electrical Conductivity | Thermal conductivity: 70W/m·K , electrical conductivity: 20%-30%IACS | Thermal conductivity: 120W/m·K , electrical conductivity: 25%-35%IACS |
| Cost Considerations | Low price, suitable for large-scale production | The price is slightly higher, but the overall performance is better, suitable for high-demand applications |
Processing Technology Of H59 And H62 Brass
The differences in processing technology between H59 and H62 brass are mainly reflected in formability, processing difficulty, weldability and surface quality. H62 brass is more excellent in surface quality, welding performance and thin plate processing, while H59 brass has advantages in hardness and strength and is suitable for use in applications requiring higher strength.
To help you better understand the differences between H59 and H62 brass in terms of processing technology, I will provide more data to help you more accurately select the most suitable brass alloy :
CNC Machining
During CNC machining, both H59 and H62 brass can produce precision parts, but their machining characteristics are different:
H59 Brass :
Cutting Force : Due to the high hardness of H59 brass (Brinell hardness is 120-160), it requires greater cutting force when machining, usually requiring higher cutting speeds and stronger tools to avoid wear.
Surface Quality : The machined surface quality is relatively poor and may show more scratches, especially under high loads. The surface roughness Ra value is usually between 3.2 μm and 6.3 μm.
Processing Difficulty : Due to the high hardness of the material, the processing is difficult and it is necessary to choose a more suitable tool material, such as carbide tools.
H62 Brass :
Cutting Force : H62 brass has a lower hardness (Brinell hardness is 90-120), so it has less cutting force and can be machined more easily.
Surface Quality : The surface quality is better than H59, and the roughness Ra value can reach 1.6 μm to 3.2 μm, which is suitable for products requiring higher surface quality.
Processing Difficulty : relatively easy to process, conventional cutting tools can be used, and the production efficiency is high.
Sheet Metal Processing
In terms of sheet metal processing, the processability of H62 brass is significantly better than that of H59:
H59 Brass :
Formability : Due to its higher hardness, H59 brass requires higher pressure when stamping, resulting in higher scrap rates, especially when stamping complex shapes. The stamping success rate is usually between 85%-90%.
Forming Shape : H59 brass is suitable for simpler shapes and is more difficult to stamp out highly complex parts.
H62 Brass :
Formability : Due to the better ductility of H62 brass, it can be formed at lower pressures and has a lower scrap rate, usually controlled between 5%-10%.
Forming Shape : H62 brass is more suitable for stamping complex shapes, capable of producing more delicate and complex parts.
Forging And Casting Methods
H59 and H62 brasses also differ in forging and casting in the following ways:
H59 Brass :
Forging Temperature : The forging temperature of H59 brass is usually between 850°C and 950°C. Due to its high hardness, the temperature needs to be appropriately increased during forging to ensure good plasticity and formability.
Forging Defects : Cracks or deformation are more likely to occur, so the temperature and operating process need to be strictly controlled.
H62 Brass :
Casting Fluidity : H62 brass exhibits good fluidity during casting, and the casting temperature range is between 950°C and 1050°C. Due to the high copper content, its fluidity is better, which can reduce casting defects and ensure the integrity of the casting.
Casting Defects : relatively few casting defects occur, and the casting success rate can reach more than 95%.
Welding And Brazing Considerations
In terms of welding and brazing, H59 and H62 brasses also perform differently, as shown below:
H59 Brass :
Weldability : During welding, due to its higher hardness and higher zinc content (40%-43%), more welding cracks may occur and the quality of the weld is more difficult to control, especially when welding at high temperatures.
Brazing : During brazing, the bonding between the two is relatively good, but it is necessary to select a brazing material with a lower melting point to avoid adverse effects of excessively high welding temperatures on the materials.
H62 Brass :
Weldability : H62 brass has good weldability, high weld quality, and less cracks and pores during welding. Its low zinc content (36.5%-39.5%) makes it more stable during welding.
Brazing : H62 brass has better brazing properties than H59, bonding better to the brazing filler metal and requiring lower brazing temperatures.
Surface Treatment Options
For surface treatment, the suitability of H59 and H62 brass is as follows:
H59 Brass :
Electroplating And Passivation : Electroplating treatments such as gold plating, nickel plating, etc. can be performed to enhance its corrosion resistance and aesthetics.
Surface Effect : Due to the high surface hardness, there may be a few surface defects after electroplating, but the overall effect is relatively stable.
H62 Brass :
Plating And Passivation : The plating effect is better than H59, providing a more uniform and smooth surface.
Surface Effect : Due to its lower hardness and better formability, H62 brass has better appearance after surface treatment, especially in decorative products.
How To Choose The Right Brass Alloy
When choosing the right brass alloy, I usually consider the environment in which the product will be used and the specific performance requirements. For example, if your product needs to be used in a more general environment and has high strength requirements, but cost is an important factor, then H59 brass may be a more cost-effective choice. Although H59 brass is slightly inferior to H62 in corrosion resistance and formability, its hardness and strength advantages make it perform well in some heavy-load or cost-sensitive applications.
On the other hand, if your product needs to cope with more complex environments, especially when there are higher requirements for corrosion resistance, appearance and formability, H62 brass will be a better choice. It not only has better corrosion resistance, but also has obvious advantages in surface treatment and formability. It is suitable for applications that need to be used for a long time and maintain a high-quality appearance, such as high-end decorative parts, precision equipment parts, etc.
Application Of H59 Brass And H62 Brass
In our production process, H59 brass and H62 brass each have their own unique application areas. As an alloy with higher strength and hardness, H59 brass is usually used in applications that require higher mechanical properties and wear resistance. H62 brass is widely used in industries such as precision instrument components for its better formability and surface quality.
For example, in the field of building hardware and electronic accessories, H59 brass is widely used to manufacture high-load bearing parts and connectors due to its excellent strength and corrosion resistance. These parts are required to withstand long-term mechanical stress and environmental impact, and H59 brass just meets this demand.
H62 brass is widely used in sanitary ware, precision instrument parts and other industries due to its better formability and surface quality. In these fields, high requirements are placed on the appearance and precision of parts. The excellent surface treatment and lower hardness of H62 brass enable it to provide higher processing efficiency and better finished product appearance during the production process.
For example, faucets, valves and other accessories in bathroom equipment often use H62 brass, not only because of its corrosion resistance, but also because it can achieve precise processing and beautiful surface effects in complex designs.
Our factory
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.Please feel free to contact us anytime for detailed information and technical quotes.Mail：sales@gneemetal.com
Product Packaging
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.
