C87850 eco bronze bushing
C87850 eco bronze bushing
C87850 Eco Bronze Bushings: The Ultimate Lead-Free Solution for High-Performance Engineering
Lead-Free Innovation with Unmatched Durability
In an era of stringent environmental regulations such as the U.S. Safe Drinking Water Act (SDWA) and RoHS, C87850 Eco Bronze (Silicon Yellow Brass) stands out as the premier lead-free alternative to traditional leaded bronzes. It’s more than just an eco-friendly solution; it’s a high-performance alloy engineered to outperform C93200, while ensuring 100% compliance with regulatory standards.
Why Choose C87850 Eco Bronze?
Superior Strength & Environmental Compliance
The C87850 Eco Bronze is designed to excel where traditional alloys fall short. Here’s why it is the ideal choice for high-performance engineering:
- Lead-Free Compliance
Unlike conventional leaded alloys, C87850 is completely free from harmful substances like lead, arsenic, and bismuth. This makes it the perfect fit for NSF/ANSI 61 & 372 certified applications, ensuring that your products meet global health and safety standards without requiring additional coatings or treatments. - Uncompromised Mechanical Properties
Even without lead, C87850 offers superior strength and wear resistance. When compared to traditional alloys like C93200 (SAE 660), C87850 outperforms in key mechanical metrics, such as tensile and yield strength, while also offering better corrosion resistance.
Technical Specifications: The Science Behind C87850 Eco Bronze
1. Chemical Composition (ASTM B505 / B271)
C87850 utilizes Silicon (Si) to replace lead and enhance the alloy’s strength, wear resistance, and durability. Below is the detailed chemical composition:
| Element | Composition (%) | Role in Alloy |
|---|---|---|
| Copper (Cu) | 75.0 – 77.0% | Provides base matrix for conductivity & corrosion resistance |
| Silicon (Si) | 2.7 – 3.4% | Increases hardness and wear resistance |
| Phosphorus (P) | 0.01 – 0.20% | Acts as a deoxidizer, ensuring cleaner casting |
| Lead (Pb) | ≤ 0.09% (Max) | Ensures lead-free compliance for potable water |
| Zinc (Zn) | Remainder | Enhances fluidity and structural integrity |
2. Mechanical Performance (Typical Values)
C87850 delivers enhanced mechanical properties compared to C93200. It provides excellent tensile strength, yield strength, and elongation, making it suitable for demanding applications.
| Property | Metric (SI Units) | Imperial (US Units) |
|---|---|---|
| Tensile Strength | 450 MPa | 65,000 psi (65 KSI) |
| Yield Strength | 172 MPa | 25,000 psi (25 KSI) |
| Elongation (in 2″) | 8 – 16% | 8 – 16% |
| Hardness (Brinell) | 100 – 130 HB | 100 – 130 HB |
| Density | 8.30 g/cm³ | 0.300 lb/in³ |
Alloy Selection: C87850 vs. Traditional Bronzes
| Feature | C87850 (Eco Bronze) | C93200 (SAE 660) | C95400 (Aluminum Bronze) | C86300 (Manganese Bronze) |
| Primary Strength | Eco-Compliance & DZR | General Purpose / Lubricity | Extreme Load / Heavy Duty | High Strength / Structure |
| Lead Content (Pb) | Low-Lead (<0.09%) | High-Lead (6–8%) | Lead-Free | Lead-Free |
| Tensile Strength | 65 ksi (High) | 35 ksi (Medium) | 85 ksi (Very High) | 110 ksi (Ultra High) |
| Machinability | 70 (Excellent) | 70 (Excellent) | 20 (Difficult) | 8 (Very Difficult) |
| Corrosion Res. | Excellent (Anti-Dezinc) | Moderate | High (Sea Water) | High |
| Best Used For | Potable Water / Precision Bushings | Low-speed / General Industrial | Heavy Impact / Marine Gears | Slow-speed / High Static Load |
Outstanding Performance in Harsh Environments
C87850 is engineered to excel in high-stress, high-corrosion environments. Key benefits include:
- Corrosion Resistance: The silicon content in C87850 forms a dense protective layer, which makes the alloy highly resistant to dezincification and stress-corrosion cracking, common issues in traditional brass alloys exposed to harsh, acidic water.
- Advanced Wear & Galling Resistance: While it’s lead-free, C87850 still boasts excellent wear resistance. In certain high-load applications, its anti-friction properties rival those of more expensive alloys, such as C95400 aluminum bronze.
Industrial Applications: Precision Meets Durability
C87850 is a versatile solution for critical components across various industries, including:
- Potable Water Systems: Faucets, valves, meter components, and pipe fittings.
- Fluid Handling: Pump impellers, wear rings, and shaft sleeves.
- Heavy Industry: Hydraulic pump parts and high-fatigue bushings for agricultural machinery.
- Automotive & Marine: Corrosion-resistant fasteners, bushings, and electronic connectors.
Industry Case Studies:
- Water Treatment Plants: Major U.S. water utilities have switched to C87850 Eco Bronze for valve components, significantly improving long-term durability and reducing maintenance costs.
- Agricultural Machinery: Leading agricultural equipment manufacturers use C87850 bushings in high-stress applications, experiencing extended equipment life due to the alloy’s superior wear resistance.
Partner with Bearingface for Precision-Crafted C87850 Bushings
At Bearingface, we specialize in Continuous Casting (ASTM B505) and precision CNC machining. We understand that global procurement demands transparency and exacting standards.
- Custom Dimensions: We offer bespoke bushings in both Inches and Metric sizes, tailored to your precise requirements.
- Expert Consulting: Not sure if C87850 is the right material for your application? Our engineers provide data-backed material selection support to ensure optimal performance.
Frequently Asked Questions (FAQ)
Q: Can C87850 replace C93200 directly?
A: Yes. In most pumping and valve applications, C87850 offers better strength and compliance with environmental standards. However, since it lacks lead’s self-lubricating properties, we recommend verifying lubrication intervals for high-speed, rotating applications.
Q: How easy is it to machine C87850?
A: C87850 has a machinability rating of approximately 40% (compared to C36000). While this is lower than leaded brass, it is still considerably easier to machine than many high-strength stainless steels and aluminum bronzes.
Get in Touch with Bearingface Today!
Ready to upgrade to lead-free engineering?
Contact us at www.bearingface.com or email iris@viiplus.com for a technical consultation and competitive quotation on C87850 Eco Bronze bushings.
