Choosing CuSn10Pb10: Custom Precision Leaded Bronze Bushing for Enhanced Durability
Leaded bronze bushings have long been a staple in the world of mechanical engineering, renowned for their durability and resistance to wear. Among the variety of alloys available, CuSn10Pb10 has emerged as a particularly reliable choice for applications requiring not just strength but also superior resistance to corrosion and operational stability. In this blog post, we’ll explore the benefits of CuSn10Pb10 leaded bronze bushings and how custom solutions can be tailored to meet specific engineering needs.
Understanding CuSn10Pb10 Leaded Bronze
CuSn10Pb10 is a high-grade bronze alloy consisting primarily of copper (Cu), tin (Sn), and lead (Pb). This combination offers a unique balance of properties:
- Corrosion Resistance: The high copper content provides excellent resistance to corrosion, making it suitable for use in harsh environments.
- Machinability: The addition of lead significantly improves the machinability of the alloy, allowing for the creation of complex and precise shapes without compromising the material’s structural integrity.
- Wear Resistance: Tin enhances the alloy’s wear resistance, making it ideal for components subjected to high levels of friction and wear.
Applications of CuSn10Pb10 Bushings
CuSn10Pb10 bushings are used in a variety of applications across multiple industries. Some common uses include:
- Marine Engineering: Due to its corrosion resistance, CuSn10Pb10 is ideal for marine applications where components are exposed to seawater.
- Automotive Components: Its durability and wear resistance make it suitable for automotive parts such as bearings and bushings that require long service life under high friction conditions.
- Industrial Machinery: In heavy machinery, where reliability and longevity are critical, CuSn10Pb10 bushings ensure smooth operation and minimal downtime.
Custom Precision Solutions
While off-the-shelf components can meet many needs, custom precision bushings offer tailored solutions that precisely match the specific requirements of a project. At our facilities, we not only offer a range of the most requested leaded bronzes but also the capability to manufacture bespoke alloys. Here’s how we do it:
- Consultation and Requirement Analysis: We start by understanding your specific needs, including the operational environment, load conditions, and desired lifespan.
- Material Selection: Based on your requirements, we help select the right alloy, or develop a custom composition that excellent fits the application.
- Precision Manufacturing: Utilizing state-of-the-art manufacturing techniques, we produce bushings that meet exact specifications with high precision.
- Quality Assurance: Every custom bushing is subjected to rigorous testing to ensure it meets the highest standards of quality and performance.
Chemical Composition
| Element | Min. (%) | Max. (%) |
|---|---|---|
| Cu | 78.0 | 82.0 |
| Ni | – | 2.0 |
| P | – | 0.10 |
| Pb | 8.0 | 11.0 |
| Sn | 9.0 | 11.0 |
| Zn | – | 2.0 |
| Al | – | 0.01 |
| Fe | – | 0.25 |
| Mn | – | 0.2 |
| S | – | 0.10 |
| Sb | – | 0.5 |
| Si | – | 0.01 |
Note: Specified impurities are shown in light type. The percentages include nickel.
Mechanical Properties (Minimum Values)
| Casting Process | Tensile Strength Rm (MPa) | 0.2% Proof Strength Rp0.2 (MPa) | Elongation 5D A (%) | HBW (10/1000) |
|---|---|---|---|---|
| Continuous (GC) | 220 | 110 | 8 | 70 |
| Centrifugal (GZ) | 220 | 110 | 6 | 70 |
Note: The mechanical property requirements apply to sizes up to and including 300 mm external diameter for continuous castings. For larger continuous castings, requirements should be agreed upon between the supplier and the purchaser.
Closest International Standards
| Standard | Alloy | Status |
|---|---|---|
| BS 1400 | LB2 | |
| DIN 1716 | CuPb10Sn | |
| NFA 53707 | CuSn10Pb10 | |
| UNE 37103-2 | C-3320 (CuSn10Pb10) | – |
| ASTM B505 | C93700 (SAE 64) | Active |
| ASTM B271 | C93700 (SAE 64) | Active |
| AS 1565 | C93700 | Active |
| JIS H5121 | CAC603C | Active |
| JIS H5120 | CAC603 | Active |
| ISO 1338 | CuPb10Sn10 | Withdrawn |
Technical Characteristics
- High resistance to wear and traction
- Excellent anti-friction properties
- Corrosion resistant
- Suitable for friction bearings in applications with high speeds, pressures, impacts, and vibrations
Why Choose Us?
Choosing the right material and specifications for bronze bushings can be complex, but our expertise in custom alloy production and precision manufacturing makes it simpler. We offer:
- Expert Guidance: Our team of experts is available to assist with material selection and engineering decisions.
- Flexible Production Runs: Whether you need a prototype or large-scale production, we can accommodate your project’s specific requirements.
- Competitive Pricing: We provide high-quality custom bushings at competitive prices, ensuring you get the excellent value for your investment.
Conclusion
For those in need of reliable, high-performance bronze bushings, CuSn10Pb10 offers a compelling combination of properties that can significantly enhance the operational capabilities of mechanical systems. With the option for custom-tailored solutions, you can ensure that your specific needs are met with precision and efficiency. If you’re looking to upgrade your components or need advice on the excellent materials for your application, feel free to reach out to us for more information. Let’s make your project a success with the right materials and expert guidance.
Overview of CuSn10Pb10 Leaded Tin Bronze Alloy
CuSn10Pb10 is a leaded tin bronze alloy, notable for its composition of 10% tin and 10% lead, positioning it as a premier material for applications requiring excellent machinability and robust self-lubricating properties. This alloy aligns closely with international standards, including ASTM B505 93700 and BS 1400 LB2, marking its global acceptance and reliability.
Chemical Composition
The alloy is primarily composed of copper, with percentages adjusted to enhance specific properties:
- Copper (Cu): 78.0% minimum to 82.0% maximum (including up to 2.0% nickel)
- Tin (Sn): 9.0% to 11.0%
- Lead (Pb): 8.0% to 11.0%
- Zinc (Zn): up to 2.0%
- Phosphorus (P): up to 0.10%
- Iron (Fe): up to 0.25%
- Nickel (Ni): up to 2.0%
- Antimony (Sb): up to 0.50%
- Sulfur (S): up to 0.10%
- Aluminum (Al): up to 0.01%
- Manganese (Mn): up to 0.20%
- Silicon (Si): up to 0.01%
Mechanical Properties
The mechanical properties of CuSn10Pb10 vary slightly based on the molding process, yet consistently deliver reliable performance:
Molding Process: Continuous and Centrifugal
- Tensile Strength (Rm): 220 MPa
- Yield Point 0.2% (Rp0.2): 110 MPa
- Elongation 5D (A%): Continuous – 8%, Centrifugal – 6%
- Hardness (HBW 10-1000): 70
Physical Properties
CuSn10Pb10 also exhibits notable physical properties that contribute to its effectiveness in various applications:
- Density: 9.0 kg/dm³
- Specific Heat: 0.376 J/(g*K)
- Thermal Expansion Coefficient: 18.7 x 10-6 K-1
- Thermal Conductivity: 54 W/(m*K)
- Electrical Conductivity: 6.0 MS/m
Applications and Advantages
CuSn10Pb10 is extensively used in conditions where its self-lubricating properties can significantly reduce wear and extend component life, such as in bearings, bushings, and other friction-exposed parts. Its excellent machinability allows for the creation of complex parts with reduced processing time and cost.
In summary, CuSn10Pb10 leaded tin bronze is a highly versatile alloy, suited for a wide range of industrial applications, providing a reliable blend of mechanical strength, corrosion resistance, and operational efficiency.