Copper alloys are used in many industrial parts, but for JEDBUSHING, the most important question is how these materials perform in bronze bushings, sleeve bearings, sliding bearings and wear-resistant components.
Different copper alloys behave differently under load, speed, lubrication and working environments. This article explains the basic types of copper alloys and how to choose a suitable material for custom bushings and bearing parts.
What Is a Copper Alloy?
A copper alloy is a metal based on copper and combined with other elements such as tin, zinc, aluminum, lead, nickel or silicon. These added elements can change the strength, wear resistance, corrosion resistance, machinability and casting performance of the material.
Pure copper has excellent electrical and thermal conductivity, but it is usually too soft for many wear or load-bearing parts. For bushings, sleeve bearings and sliding parts, copper alloys are often more suitable because their properties can be adjusted for mechanical use.
| Alloying Element | Common Effect |
|---|---|
| Tin | Improves wear resistance and strength |
| Zinc | Forms brass and supports general-purpose parts |
| Aluminum | Improves strength, load capacity and corrosion resistance |
| Lead | Improves machinability and anti-seizure performance |
| Nickel | Improves corrosion resistance in harsh environments |
| Silicon | Improves strength and corrosion resistance in selected alloys |
Main Types of Copper Alloys
Copper alloys can be divided into several main groups. Each group has different properties and typical uses.
| Type | Main Elements | Common Use Direction |
| High copper alloys | Copper with small alloy additions | Conductive parts and special-strength parts |
| Brass | Copper + zinc | Fittings, general components and lower-cost parts |
| Tin bronze | Copper + tin | Bushings, bearings and wear parts |
| Aluminum bronze | Copper + aluminum | Heavy-load and high-strength components |
| Leaded bronze | Copper + tin + lead | Bearing parts and machinable bushings |
| Copper-nickel | Copper + nickel | Marine and corrosion-resistant parts |
For bushing and bearing applications, bronze materials are usually more important than general brass or pure copper. Tin bronze, aluminum bronze, leaded bronze and oilless bronze materials are commonly considered for sliding or rotating parts.
Common Copper Alloy Grades
In custom bushing production, the material grade matters. Different copper alloy grades may look similar, but they can perform very differently in actual working conditions.
| Grade / Material | Material Type | Common Application Direction |
| C93200 / SAE 660 | Leaded tin bronze | General bearing bronze and sleeve bushings |
| C95400 | Aluminum bronze | Heavy-load bushings and higher-strength parts |
| C86300 | Manganese bronze | High-strength wear parts and heavy-duty components |
| C90700 | Tin bronze | Wear-resistant bushings and bearing parts |
| C93700 | High-leaded tin bronze | Bearing parts needing good machinability |
| CuSn / CuAl / CuPb series | Bronze alloy families | Selected based on drawings and working conditions |
These grades are not interchangeable in every application. A bronze sleeve bearing used in hydraulic equipment may need a different alloy from a sliding bearing used in mining machinery or wind power equipment.
For this reason, JEDBUSHING usually checks the drawing, working condition and material requirement before confirming the final copper alloy.
Why Copper Alloys Work for Sliding Parts
Copper alloys are widely used for bushings and sliding bearings because they can provide a useful balance between wear resistance, strength, friction behavior and machinability.
| Property | Why It Matters for Bushings and Bearings |
| Wear resistance | Helps reduce surface damage during sliding movement |
| Load capacity | Supports pressure between shaft and bushing |
| Anti-seizure behavior | Helps reduce sticking or damage between moving surfaces |
| Corrosion resistance | Useful in wet, outdoor or industrial environments |
| Machinability | Helps meet drawing tolerance, oil grooves and surface requirements |
| Castability | Supports custom sizes, rings, plates and non-standard structures |
In many machines, the bushing is a replaceable wear part. Its job is to protect more expensive components, support movement and reduce friction. A suitable copper alloy can help the part work more reliably under the right lubrication and operating conditions.
How to Choose the Right Copper Alloy
There is no single “best” copper alloy for every bushing or bearing. The right material depends on the working condition.
| Working Condition | Possible Material Direction |
| General sliding wear | Tin bronze or leaded tin bronze |
| Higher load or impact | Aluminum bronze or manganese bronze |
| Limited lubrication | Oilless bronze or graphite bronze bushing |
| Better machinability needed | Leaded bronze |
| Wet or corrosive environment | Aluminum bronze or other corrosion-resistant bronze |
| Cost-sensitive bearing structure | Bimetal bearing material |
| Custom heavy-duty wear part | Cast bronze alloy based on drawing requirements |
Before selecting a material, buyers should consider:
- Load and movement direction
- Shaft material and surface condition
- Working speed
- Lubrication method
- Temperature and environment
- Required tolerance and surface finish
- Quantity and production method
A material that works well in one machine may not be suitable for another. This is especially true for custom bronze bushings, sleeve bearings and sliding bearings.
Copper Alloy vs Pure Copper
Pure copper and copper alloy are not the same in industrial applications. Pure copper is valued for conductivity, but copper alloys are usually more suitable for mechanical wear parts.
| Material | Main Strength | Limitation | Bushing Suitability |
| Pure copper | Excellent conductivity | Softer and lower wear resistance | Usually not the first choice |
| Copper alloy | Adjustable strength, wear resistance and corrosion resistance | Properties depend on alloy grade | More suitable for bushings and bearings |
For most bronze bushings, sleeve bearings and plain bearings, buyers choose copper alloys instead of pure copper because the part must handle friction, pressure and long-term movement.
Custom Bushings and Bearings from JEDBUSHING
JEDBUSHING manufactures custom bronze bushings, sleeve bearings, sliding bearings, bronze rings, wear plates and other copper alloy wear parts. We support production based on drawings or samples and can discuss different material options, including tin bronze, aluminum bronze, leaded bronze, manganese bronze, bimetal bearing material and oilless bronze.
To help us review your project, you can send the following details:
| Information to Send | Why It Helps |
| Drawing or sample | Confirms dimensions and structure |
| Material grade | Helps check alloy selection and availability |
| Load and speed | Affects wear and strength requirements |
| Lubrication method | Helps choose standard bronze or oilless design |
| Working environment | Helps check corrosion, temperature and dust risk |
| Tolerance requirement | Helps plan machining and inspection |
| Quantity | Helps estimate production method and cost |
If you are not sure which copper alloy is suitable, our team can help review your working condition and recommend a practical material direction.
FAQ About Copper Alloy Bushings
What is a copper alloy?
A copper alloy is a metal based on copper and combined with elements such as tin, zinc, aluminum, lead or nickel to improve properties such as strength, wear resistance, corrosion resistance or machinability.
Is bronze a copper alloy?
Yes. Bronze is a copper alloy. Many bronze materials are used for bushings, sleeve bearings, sliding bearings and wear-resistant parts.
Which copper alloy is best for bushings?
There is no single best material for all bushings. Tin bronze, leaded bronze, aluminum bronze, manganese bronze and oilless bronze may all be suitable depending on load, speed, lubrication and working environment.
Is brass suitable for bushings?
Brass can be used for some general components, but for many wear-resistant or load-bearing bushing applications, bronze materials are usually more suitable.
What information is needed for a custom copper alloy bushing quote?
You can send the drawing, material requirement, quantity, tolerance, load, speed, lubrication method and working environment. These details help confirm the right material and production method.