Cu-DHP vs Cu-ETP: 100% composition overlap. Very similar materials, likely interchangeable for most applications.
Cu-DHP vs Cu-ETP
Side-by-side chemical composition and mechanical property comparison.
Overview
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.
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.
| Cu-DHP | Cu-ETP | |
|---|---|---|
| Material Number | CW024A | CW004A |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1652 | EN 13601 |
Chemical composition (wt%)
| Element | Cu-DHP | Cu-ETP | Overlap |
|---|---|---|---|
| P | 0.015–0.04% | — | — |
| Cu | ≥ 99.9% | ≥ 99.9% | OK |
| O | — | 0–0.04% | — |
| Bi | — | 0–0.0005% | — |
Mechanical properties
| Property | Cu-DHP | Cu-ETP | Unit |
|---|---|---|---|
| tensile_strength | 200–260 | 200–260 | MPa |
| yield_strength | 40–80 | 40–80 | MPa |
| elongation | 40–50 | ≥ 33 | % |
Compatibility Assessment
Cu-DHP and Cu-ETP have very similar compositions (100% overlap) and are likely interchangeable for most applications. Verify mechanical properties for your specific use case.
Automated assessment based on composition analysis
Frequently Asked Questions
Is Cu-DHP the same as Cu-ETP?
Cu-DHP and Cu-ETP have a 100% composition overlap. For most purposes, they can be considered similar.
Can I replace Cu-DHP with Cu-ETP?
In many cases, yes. The compositions overlap significantly (100%). However, always verify mechanical property requirements and heat treatment compatibility for your specific application.
What is the difference between Cu-DHP and Cu-ETP?
The main differences are in the following elements: overall alloying content. Cu-DHP is a Copper & Brass grade, while Cu-ETP 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.