CuSn5Zn5Pb5-C (CC491K) vs Cu-ETP: 0% composition overlap. Significantly different materials serving different application areas.
CuSn5Zn5Pb5-C (CC491K) vs Cu-ETP
Side-by-side chemical composition and mechanical property comparison.
Overview
CuSn5Zn5Pb5-C (CC491K)
2.1096
Classic leaded gunmetal (Rotguss Rg5) — the universal copper casting alloy for bearings and fittings. 5% Sn + 5% Zn + 5% Pb provides good machinability, moderate strength, excellent corrosion resistance in fresh and sea water, and self-lubricating properties from lead phase. Used for plain bearings under low/medium loads, valve bodies, pump housings, pipe fittings, and general marine hardware. The economic workhorse of the bronze foundry. ASTM: C83600 (SAE 40), BS: LG2.
Cu-ETP
CW004A
Electrolytic Tough Pitch copper — the most widely used copper grade worldwide. 99.90% Cu min with controlled oxygen content (~0.02-0.04%). Electrical conductivity ≥100% IACS. Used for busbars, motor windings, transformer coils, electrical conductors, roofing, and radiators. Caution: hydrogen embrittlement risk in reducing atmospheres above 370°C.
| CuSn5Zn5Pb5-C (CC491K) | Cu-ETP | |
|---|---|---|
| Material Number | 2.1096 | CW004A |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 13601 |
Chemical composition (wt%)
| Element | CuSn5Zn5Pb5-C (CC491K) | Cu-ETP | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Ni | ≤ 2% | — | — |
| Cu | 83–87% | ≥ 99.9% | No overlap |
Mechanical properties
| Property | CuSn5Zn5Pb5-C (CC491K) | Cu-ETP | Unit |
|---|---|---|---|
| tensile_strength | 200–250 | 200–260 | MPa |
| yield_strength | 90–110 | 40–80 | MPa |
| elongation | 6–13 | ≥ 33 | % |
Compatibility Assessment
CuSn5Zn5Pb5-C (CC491K) and Cu-ETP have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is CuSn5Zn5Pb5-C (CC491K) the same as Cu-ETP?
CuSn5Zn5Pb5-C (CC491K) and Cu-ETP have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn5Zn5Pb5-C (CC491K) with Cu-ETP?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn5Zn5Pb5-C (CC491K) and Cu-ETP?
The main differences are in the following elements: Cu, Pb. CuSn5Zn5Pb5-C (CC491K) is a Copper & Brass grade, while Cu-ETP is a Copper & Brass grade.
Related Comparisons
View full data for each material:
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.