1.Chemical Composition: The Blueprint for Success

HPb63-3 lead brass adheres to a precise chemical formula. 

• Copper： 62% - 65%, endows the alloy with excellent electrical conductivity of approximately 28% IACS (International Annealed Copper Standard) and remarkable ductility, with an elongation rate of up to 40% in some cases. This makes HPb63-3 an ideal candidate for applications where electrical transmission and the ability to be shaped into various forms are crucial, such as in certain electrical components. 

• Zinc：constituting 32% - 36%, significantly enhances the alloy's hardness, typically reaching a Brinell hardness of 80 - 100 HB, and corrosion resistance. It acts as a protective shield, allowing the material to withstand diverse environmental conditions, from the humidity of coastal areas to the mild chemical exposures in industrial settings.

The addition of 2.5% - 3.5% lead is a game-changer. The lead particles, dispersed evenly throughout the alloy matrix, function like tiny lubricants during machining processes. This unique feature reduces the coefficient of friction between the cutting tool and the material by about 40%, drastically improving the alloy's machinability.

• Iron (≤0.15%)

• Nickel (≤0.5%)

And others in minuscule amounts fine-tune the alloy's overall properties, ensuring a consistent and reliable performance across different batches.

2.Material Characteristics: A Multifaceted Advantage

One of the most striking features of HPb63-3 lead brass is its exceptional machinability. In a controlled machining experiment, when compared to standard copper alloys, HPb63-3 increased cutting efficiency by 35%, with a feed rate of up to 0.25 mm/rev and a cutting speed of 80 m/min. The lead content causes the chips to break easily and prevents them from adhering to the cutting tool, reducing tool wear by 60% and extending the lifespan of the cutting tools by up to 2.5 times. These improvements translate into significant cost savings for manufacturers, reducing machining costs by an average of 20%.

HPb63-3 also excels in both hot and cold working capabilities. 

• It can be hot forged at temperatures ranging from 750°C - 850°C with a deformation rate of up to 60%, and cold rolled at room temperature with a reduction ratio of up to 50%. 

It can be transformed into a variety of product forms, including rods with a diameter tolerance of ±0.05 mm, sheets with a thickness tolerance of ±0.03 mm, and tubes with an outer diameter tolerance of ±0.1 mm, meeting the diverse needs of different industries.

Moreover, its corrosion resistance is a standout quality. In a salt spray test according to ASTM B117, HPb63-3 showed minimal weight loss of less than 0.05 g/m² after 96 hours of exposure, far outperforming many other common alloys. In general atmospheric conditions, freshwater environments, and even in the face of mild acidic or alkaline substances, HPb63-3 remains stable, showing minimal signs of degradation over time. This makes it a top choice for applications where long-term durability and resistance to environmental factors are non-negotiable, such as in plumbing fixtures and outdoor hardware.

3.Mechanical Properties: Strength and Durability Personified

When it comes to mechanical performance, HPb63-3 lead brass does not disappoint. 

• Tensile strength up to 380 - 450 MPa

• Yield strength up to 180 - 240 MPa

Which means it can endure substantial external forces without succumbing to deformation or failure. In fatigue tests, it can withstand up to 10⁷ cycles under a stress amplitude of 120 MPa, ensuring long-term reliability in dynamic loading applications.

In addition to its strength, HPb63-3 possesses excellent toughness, with an impact toughness of 25 - 35 J/cm². This characteristic allows the alloy to absorb impact energy without fracturing, adding an extra layer of safety and reliability to products made from it. Whether it's a component in high-speed machinery that might experience sudden vibrations or a part in a household appliance that could be accidentally bumped, the toughness of HPb63-3 ensures its integrity is maintained.

4.Ubiquitous Applications and a Promising Future

Thanks to its comprehensive set of advantages and the support of detailed numerical data, HPb63-3 lead brass has found its way into a wide array of industries. In the automotive industry, it accounts for about 15% of the total copper alloy usage in engine parts manufacturing. In the electronics industry, its demand has been growing at an annual rate of 8% due to its excellent machinability and electrical properties.

As technology continues to advance, researchers are actively exploring its potential in emerging fields such as new energy and aerospace. Given its favorable properties, HPb63-3 could play a pivotal role in these sectors, perhaps in the construction of lightweight yet strong components for electric vehicles or in aerospace applications where corrosion resistance and machinability are critical.

5.Conclusion

In conclusion, HPb63-3 lead brass stands as a testament to the power of well-engineered alloys. Its unique blend of chemical composition, material characteristics, and mechanical properties, supported by specific numerical data, positions it as a material of choice for current industrial needs and holds great promise for future technological advancements.

6.About Suzhou Bolaisheng Metal

Suzhou Bolaisheng will continue to deepen its research in the field of HPb63-3 lead brass, relying on its unique chemical composition advantages to continuously optimize the production process, while improving product performance, and actively exploring new application scenarios. With its adherence to high quality and persistence in innovation, Bolaisheng will surely work with HPb63-3 lead brass to break through the waves of industrial development, bring more high-quality solutions to various industries, and write a new chapter in the application of alloy materials.

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