Cu-DHP vs Cu-OF: 0% composition overlap. Significantly different materials serving different application areas.
Cu-DHP vs Cu-OF
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-OF
CW008A
Oxygen-free high-conductivity copper. 99.95% Cu min with max 0.001% O — eliminates hydrogen embrittlement risk during welding/brazing in reducing atmospheres. Used for vacuum electronics, waveguides, particle accelerator components, cryogenic systems, and applications where welding in H2-containing atmospheres is required.
| Cu-DHP | Cu-OF | |
|---|---|---|
| Material Number | CW024A | CW008A |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 1652 | EN 13601 |
Chemical composition (wt%) — Pro
| Element | Cu-DHP | Cu-OF | Overlap |
|---|---|---|---|
| P | 0.015–0.04% | — | — |
| Cu | ≥ 99.9% | ≥ 99.95% | No overlap |
| O | — | 0–0.001% | — |
Mechanical properties — Pro
| Property | Cu-DHP | Cu-OF | Unit |
|---|---|---|---|
| Tensile Strength | 200–260 | 200–260 | MPa |
| Yield Strength | 40–80 | 40–80 | MPa |
| Elongation | 40–50 | ≥ 33 | % |
| Elastic Modulus | |||
| Density |
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Cu-DHP and Cu-OF 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 Cu-DHP the same as Cu-OF?
Cu-DHP and Cu-OF have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace Cu-DHP with Cu-OF?
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 Cu-DHP and Cu-OF?
The main differences are in the following elements: Cu. Cu-DHP is a Copper & Brass grade, while Cu-OF is a Copper & Brass grade.
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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.