CuSn5Zn5Pb5-C (CC491K) vs CuZn36Pb3: 22% composition overlap. Significantly different materials serving different application areas.
CuSn5Zn5Pb5-C (CC491K) vs CuZn36Pb3
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.
CuZn36Pb3
CW603N
Free-cutting leaded brass — the benchmark for non-ferrous machinability (rated 100%). Lead particles act as chip breakers for excellent surface finish. Used for screw machine parts, fittings, valves, watch components, precision mechanics, and electrical connectors. Old DIN number 2.0375.
| CuSn5Zn5Pb5-C (CC491K) | CuZn36Pb3 | |
|---|---|---|
| Material Number | 2.1096 | CW603N |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 12164 |
Chemical composition (wt%)
| Element | CuSn5Zn5Pb5-C (CC491K) | CuZn36Pb3 | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | — | — |
| Ni | ≤ 2% | 0–0.3% | OK |
| Cu | 83–87% | 60–63% | No overlap |
Mechanical properties
| Property | CuSn5Zn5Pb5-C (CC491K) | CuZn36Pb3 | Unit |
|---|---|---|---|
| tensile_strength | 200–250 | ≥ 340 | MPa |
| yield_strength | 90–110 | ≥ 280 | MPa |
| elongation | 6–13 | ≥ 10 | % |
Compatibility Assessment
CuSn5Zn5Pb5-C (CC491K) and CuZn36Pb3 have significantly different compositions (22% 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 CuZn36Pb3?
CuSn5Zn5Pb5-C (CC491K) and CuZn36Pb3 have a 22% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn5Zn5Pb5-C (CC491K) with CuZn36Pb3?
Generally not recommended. The compositions differ significantly (22% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn5Zn5Pb5-C (CC491K) and CuZn36Pb3?
The main differences are in the following elements: Cu, Sn, Pb. CuSn5Zn5Pb5-C (CC491K) is a Copper & Brass grade, while CuZn36Pb3 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.