CuCr1Zr (CW106C) vs Cu-ETP (CW004A): 0% composition overlap. Significantly different materials serving different application areas.
CuCr1Zr (CW106C) vs Cu-ETP (CW004A)
Side-by-side chemical composition and mechanical property comparison.
Overview
CuCr1Zr (CW106C)
CW106C
Chromium-zirconium copper alloy, precipitation hardened. High electrical/thermal conductivity (~80% IACS) with significantly higher strength and hardness than pure copper. Age-hardened: Rm 440–540 MPa, Rp0.2 380–480 MPa, HB 130–170. Softening temperature ~500°C. UNS C18150, EN CW106C. Applications: resistance welding electrodes and caps, continuous casting molds, circuit breaker contacts, lead frames, MIG welding tips. THE standard electrode material.
Cu-ETP (CW004A)
2.0060
Electrolytic tough pitch copper — 99.90% Cu minimum with 0.02-0.04% oxygen from electrolytic refining. The standard electrical-grade copper worldwide (IACS 101% conductivity). Highest electrical and thermal conductivity of any commercial copper grade. Easy to cold form, hot form, and solder/braze. Cannot be welded in oxidizing atmosphere (embrittlement from oxygen). Used for electrical busbars, wire, cable, transformer windings, circuit boards, heat exchangers, roofing, and plumbing. ASTM: C11000, UNS C11000.
| CuCr1Zr (CW106C) | Cu-ETP (CW004A) | |
|---|---|---|
| Material Number | CW106C | 2.0060 |
| Category | Copper & Brass | Copper & Brass |
| Standard | EN 12163 / CEN/TS 13388 | EN 1652 |
Chemical composition (wt%)
| Element | CuCr1Zr (CW106C) | Cu-ETP (CW004A) | Overlap |
|---|---|---|---|
| Cr | 0.5–1.2% | — | — |
| Cu | ≥ 98.5% | ≥ 99.9% | No overlap |
| Zr | 0.03–0.3% | — | — |
| O | — | ≤ 0.04% | — |
Mechanical properties
| Property | CuCr1Zr (CW106C) | Cu-ETP (CW004A) | Unit |
|---|---|---|---|
| tensile_strength | 440–540 | 200–250 | MPa |
| yield_strength | 380–480 | 40–80 | MPa |
| elongation | 8–15 | ≥ 33 | % |
Compatibility Assessment
CuCr1Zr (CW106C) and Cu-ETP (CW004A) 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 CuCr1Zr (CW106C) the same as Cu-ETP (CW004A)?
CuCr1Zr (CW106C) and Cu-ETP (CW004A) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace CuCr1Zr (CW106C) with Cu-ETP (CW004A)?
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 CuCr1Zr (CW106C) and Cu-ETP (CW004A)?
The main differences are in the following elements: Cu. CuCr1Zr (CW106C) is a Copper & Brass grade, while Cu-ETP (CW004A) 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.