Cu-ETP
CW004AElectrolytic 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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C11000 | C11000 | REF |
| 🇪🇺 | EN | Europe | Cu-ETP | CW004A | 100% |
| 🇬🇧 | BS | United Kingdom | C101 | — | 98% |
| 🇯🇵 | JIS | Japan | C1100 | — | 98% |
Sources: ASTM B152, EN 13601, BS 1172, JIS H3100
Mechanical properties
Compatibility verdict
Cu-ETP and C101: 98% composition match
Related materials
CuZn39Pb3
2.0401The most widely used free-cutting brass (machinability index 100%). Excellent for high-speed automatic lathe work. Used for turned parts, faucets, valves, fittings, screws, nuts, electrical connectors, and watch components. Also known as MS58.
CuSn8
2.1030Phosphor bronze with 8% tin. High mechanical strength, excellent wear resistance, good corrosion resistance (especially seawater). Self-lubricating sliding properties. Used for heavy-duty bearings, gears, worm wheels, springs, sliding elements, and connectors.
CuZn37
2.0321Lead-free alpha/alpha+beta brass (63% Cu, 37% Zn). Compromise between cold formability (CuZn35) and hot formability (CuZn40). The most widely used unleaded brass. Used for cartridge cases, radiator cores, lamp components, plumbing fixtures, and decorative hardware.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription