CuSn5Zn5Pb5-C (CC491K) vs Cu-DHP: 13% composition overlap. Significantly different materials serving different application areas.
CuSn5Zn5Pb5-C (CC491K) vs Cu-DHP
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-DHP
CW024A
Phosphorus-deoxidized copper (DHP = Deoxidized High Phosphorus, 0.015-0.040% P). THE material for copper plumbing tubes worldwide (EN 1057). P prevents hydrogen embrittlement during brazing/welding — essential for plumbing/HVAC joints. Slightly lower electrical conductivity than Cu-ETP (85% IACS vs 101%) due to P content. UNS C12200. Used for plumbing tubes, heating systems, solar thermal, refrigeration tubes, and architectural roofing.
| CuSn5Zn5Pb5-C (CC491K) | Cu-DHP | |
|---|---|---|
| Material Number | 2.1096 | CW024A |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1982 | EN 1652 |
Chemical composition (wt%)
| Element | CuSn5Zn5Pb5-C (CC491K) | Cu-DHP | Overlap |
|---|---|---|---|
| Si | ≤ 0.01% | — | — |
| P | ≤ 0.1% | 0.015–0.04% | OK |
| Ni | ≤ 2% | — | — |
| Cu | 83–87% | ≥ 99.9% | No overlap |
Mechanical properties
| Property | CuSn5Zn5Pb5-C (CC491K) | Cu-DHP | Unit |
|---|---|---|---|
| tensile_strength | 200–250 | 200–260 | MPa |
| yield_strength | 90–110 | 40–80 | MPa |
| elongation | 6–13 | 40–50 | % |
Compatibility Assessment
CuSn5Zn5Pb5-C (CC491K) and Cu-DHP have significantly different compositions (13% 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-DHP?
CuSn5Zn5Pb5-C (CC491K) and Cu-DHP have a 13% composition overlap. They are generally not directly interchangeable.
Can I replace CuSn5Zn5Pb5-C (CC491K) with Cu-DHP?
Generally not recommended. The compositions differ significantly (13% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between CuSn5Zn5Pb5-C (CC491K) and Cu-DHP?
The main differences are in the following elements: Cu. CuSn5Zn5Pb5-C (CC491K) is a Copper & Brass grade, while Cu-DHP is a Copper & Brass grade.
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.