CuSn8 (CW453K / C52100) Bronze Bushings Material Datasheet
CuSn8 (also known as CW453K and material number 2.1030) is a premium tin bronze with approximately 8% tin. JBM uses this high-strength phosphor bronze for self-lubricating bushings designed for heavy-load and low-speed operating conditions.
What Makes CuSn8 (CW453K) Ideal for Bushings?
CuSn8 is known for excellent cold-forming behavior, stable elastic response, and strong anti-wear performance. In practical engineering discussions, you may also see this alloy written as cu sn 8, 2.1030 CuSn8, or C52100 depending on the standard format.
When processed for wrapped or precision-machined bushings, CuSn8 can handle high contact stress while keeping friction low against hardened steel shafts. This combination supports long service life in applications where maintenance access is limited.
- Exceptional wear and friction performance: suitable for heavy-load, low-speed sliding conditions.
- High mechanical strength: commonly available in high-strength states such as CuSn8 R450.
- Superior corrosion resistance: reliable in seawater, humid climates, and industrial atmospheres.
Equivalent Names
CuSn8 = CW453K = 2.1030 = C52100
Also referenced as CuSn8P when phosphorus is explicitly listed.
Typical Use at JBM
Wrapped bronze bushings, self-lubricating sliding bearings, and custom wear plates for continuous duty equipment.
CuSn8 Material Datasheet and Chemical Composition
The phosphorus addition (often written as CuSn8P) acts as a deoxidizer and helps improve stiffness and fatigue behavior.
| Specification | Cu | Sn | P | Zn | Ni | Fe | Other Elements | Pb |
|---|---|---|---|---|---|---|---|---|
| CuSn8 / CW453K / C52100 | Rem. | 7.5 - 8.5 | 0.01 - 0.40 | ≤ 0.20 | ≤ 0.20 | ≤ 0.10 | Total ≤ 0.20 | ≤ 0.02 |
Physical and Mechanical Properties
Understanding the physical data of 2.1030 CuSn8 helps engineers match materials to duty cycle, temperature, and loading profile.
Density
8.80 g/cm³
Melting Range
1025°C - 1040°C
Electrical Conductivity
~7.5 MS/m (approx. 13% IACS)
Tensile Strength (Rm)
Up to 450 MPa or higher in CuSn8 R450 condition
Typical Applications of CuSn8 Bronze
- Mechanical engineering: bearings, cages, wear plates, gears, and heavy-duty shafts.
- Electronics: connectors, terminals, and high-performance contact springs.
- Marine and industrial: parts exposed to seawater or corrosive atmospheres.
Why Choose JBM for CuSn8 Self-Lubricating Bushings?
JBM specializes in advanced sliding bearing solutions for demanding motion systems. Our CuSn8 CW453K bronze bushings are engineered for high fatigue resistance, dimensional stability, and low maintenance.
From standard dimensions to custom-machined wear components, we help teams shorten lead time while maintaining strict quality consistency.
JBM can machine CuSn8 material into almost any component form, including bushings, wear plates, gaskets/shims, and semi-finished round bars for downstream processing.
Contact JBM for a Quote or Technical SupportNeed CuSn8 Bronze Bushings?
Get material guidance and production support for CuSn8 (CW453K / 2.1030) self-lubricating bushings, wrapped bearings, and custom bronze wear components.
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