TL;DR | Article Summary for Buyers
863 manganese bronze, also known throughout the industry as UNS C86300, is a high-strength copper-based alloy specifically engineered for heavy-load applications with consistent wear, such as bearings, bushings, and gears. Erie Bronze and Aluminum specializes in manufacturing custom 863 manganese bronze castings for industrial OEMs throughout the world’s most demanding industries.
Quotes for 863 Manganese Bronze Parts
What is 863 Manganese Bronze?
863 manganese bronze is a unique copper-zinc alloy that is further enhanced with manganese, aluminum, and iron to deliver the strength and wear resistance characteristics to outperform softer bronze alloys in high-performance applications. Unlike these softer bronze alloys, 863 is designed for use in applications where components are subjected to consistent compressive forces, shock, and continual friction.
This alloy is frequently specified under the C86300 designation and is commonly selected for applications where standard tin or leaded bronzes do not afford the mechanical strength or longevity required. With a carefully optimized combination of casting characteristics and durability, 863 manganese bronze castings offer Erie Bronze & Aluminum the ability to create cost-efficient parts that perform reliably under severe conditions without extending turnaround times.
| Property | 863 Manganese Bronze | 660 Bearing Bronze | Aluminum Bronze |
| Load Capacity | High | Moderate | Very High |
| Wear Resistance | Excellent in sliding and boundary-lubricated conditions | Good for low to moderate wear applications | Excellent in abrasive environments |
| Machinability | Good for a high-strength bronze | Excellent | Fair to difficult |
| Shock Load Performance | Very good | Limited | Excellent |
| Corrosion Resistance | Moderate | Moderate | Excellent |
| Relative Cost | Moderate | Low | High |
Common Applications for 863 Manganese Bronze Castings
This alloy is widely specified throughout the industrial world, notably in applications that have challenging conditions and cannot experience any downtime. Typical castings made at Erie Bronze & Aluminum from manganese bronze include, but are not limited to:
- Industrial bushings and bearings
- Worm gears, gear segments, and standard gears
- Hydraulic and mechanical linking components
- Marine equipment components
Who Should Consider Partnering with EBA for Manganese Bronze Parts
If you’ve made it this far in your search for a reliable casting partner with experience in 863 manganese bronze, chances are you are representing one of the major industrial sectors below. Throughout our history, we’ve had the opportunity to partner with OEMs and other manufacturers to develop robust manganese bronze castings designated for mission-critical applications. We’ve worked with customers in the mining, steel processing, marine equipment, heavy machining OEMs, material handling applications, and countless power generation projects to deliver high-performance and reliable UNS C86300.
Reasons Why Manganese Bronze is Specified by Engineers
Durability and friction performance are often the first attributes engineers associate with 863 manganese bronze castings, but several additional factors make this alloy a reliable choice for demanding industrial applications.
863 manganese bronze performs exceptionally well under high loads where softer bronze alloys may deform, seize, or experience premature wear, conditions that can derail machinery, increase maintenance costs, and extend production downtime. It delivers consistent wear performance without becoming cost-prohibitive, making it well-suited for components that require long service life without excessive material expense.
The alloy also resists metal-to-metal adhesion in sliding and friction-heavy applications, reducing the risk of galling or seizure where weaker alloys may fail. Just as importantly, 863 manganese bronze maintains tight tolerances and dimensional stability throughout extended service intervals, even under repeated stress and impact loading.
Additional FAQs About C86300 Castings
How does 863 manganese bronze compare to 660 bearing bronze?
863 offers higher strength and load capacity than 660 bearing bronze, making it a better choice for applications where deformation resistance and long service life are required.
Can 863 manganese bronze be machined?
Yes, it can be CNC machined, if specified, to tight tolerances for precision components such as bearings, gears, and wear parts.
When should 863 manganese bronze not be used?
863 manganese bronze is not ideal for high-speed applications or environments requiring extreme corrosion resistance, where other bronze alloys may perform better.
Request a Quote for 863 Manganese Bronze Castings
If your application requires durable, high-strength bronze components, Erie Bronze and Aluminum is prepared to support your project with American-made custom 863 manganese bronze castings. Our team works directly with engineers, buyers, and maintenance managers to ensure material selection, casting design, and final machining align with real-world performance requirements.
Submit your drawings or specifications today to request a quote and discuss your 863 manganese bronze casting needs with a knowledgeable bronze foundry partner.
