CuSn8 vs CuZn28: 33% composition overlap. Significantly different materials serving different application areas.
CuSn8 vs CuZn28
Side-by-side chemical composition and mechanical property comparison.
Overview
CuSn8
2.1030
Phosphor bronze with 8% tin. High mechanical strength, excellent wear resistance, good corrosion resistance (especially seawater). Self-lubricating sliding properties. Used for heavy-duty bearings, gears, worm wheels, springs, sliding elements, and connectors.
CuZn28
CW505L
Single-phase alpha brass — Cu 72%, Zn 28%. Excellent cold formability (deep drawing, spinning, bending). Better corrosion resistance than higher-Zn brasses (CuZn37, CuZn40). Used for cartridge cases (hence "cartridge brass"), musical instruments, lamp fittings, radiator cores, and decorative hardware. Good dezincification resistance.
| CuSn8 | CuZn28 | |
|---|---|---|
| Material Number | 2.1030 | CW505L |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 12163 | EN 1652 |
Chemical composition (wt%) — Pro
| Element | CuSn8 | CuZn28 | Overlap |
|---|---|---|---|
| P | 0.01–0.4% | — | — |
| Ni | 0–0.3% | — | — |
| Cu | — | 71–73% | — |
| Sn | 7.5–8.5% | — | — |
| Zn | |||
| Fe | |||
| Pb |
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Sign up free — 3 comparisons/day freeMechanical properties — Pro
| Property | CuSn8 | CuZn28 | Unit |
|---|---|---|---|
| Tensile Strength | 450–540 | 300–380 | MPa |
| Yield Strength | ≥ 300 | 90–150 | MPa |
| Elongation | ≥ 18 | 40–55 | % |
| Hardness HB | |||
| Elastic Modulus | |||
| Density | |||
| Tensile Strength | |||
| Yield Strength Rp0.2 | |||
| Elongation A | |||
| Density | |||
| Electrical Conductivity |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
CuSn8 and CuZn28 have significantly different compositions (33% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is CuSn8 the same as CuZn28?
CuSn8 and CuZn28 have a 33% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn8 with CuZn28?
Generally not recommended. The compositions differ significantly (33% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn8 and CuZn28?
The main differences are in the following elements: overall alloying content. CuSn8 is a Copper & Brass grade, while CuZn28 is a Copper & Brass grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.