Cu-ETP vs CuBe2: 0% composition overlap. Significantly different materials serving different application areas.
Cu-ETP vs CuBe2
Side-by-side chemical composition and mechanical property comparison.
Overview
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.
CuBe2
CW101C
THE highest-strength copper alloy — UTS up to 1400 MPa (200 ksi), approaching steel strength with copper's conductivity (22% IACS aged). Age-hardenable: solution treat 780-800°C, age 315-340°C → HRC 38-45. Non-sparking, non-magnetic. Trade names: Alloy 25 (Materion), BeCu25 (NGK). CAUTION: Be dust is carcinogenic — machining requires extraction. Used for non-sparking tools, mold inserts, springs, connectors, and resistance welding electrodes.
| Cu-ETP | CuBe2 | |
|---|---|---|
| Material Number | CW004A | CW101C |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 13601 | EN 12163 |
Chemical composition (wt%)
| Element | Cu-ETP | CuBe2 | Overlap |
|---|---|---|---|
| Ni | — | 0–0.3% | — |
| Cu | ≥ 99.9% | — | — |
| O | 0–0.04% | — | — |
| Bi | 0–0.0005% | — | — |
Mechanical properties
| Property | Cu-ETP | CuBe2 | Unit |
|---|---|---|---|
| tensile_strength | 200–260 | 440–540 | MPa |
| yield_strength | 40–80 | — | MPa |
| elongation | ≥ 33 | 25–45 | % |
Compatibility Assessment
Cu-ETP and CuBe2 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-ETP the same as CuBe2?
Cu-ETP and CuBe2 have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace Cu-ETP with CuBe2?
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-ETP and CuBe2?
The main differences are in the following elements: overall alloying content. Cu-ETP is a Copper & Brass grade, while CuBe2 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.