CuFe2P
CW107CPrecipitation-hardened copper-iron alloy — THE semiconductor leadframe material since 1964. Fe precipitates give UTS up to 580 MPa while maintaining 60-65% IACS electrical conductivity. Resists softening to 350°C (critical for IC packaging). Also used for automotive connectors, pin grid arrays (PGA), and terminals. Trade names: Wieland K65, Aurubis PNA212.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C19400 | C19400 | REF |
| 🇪🇺 | EN | Europe | CuFe2P / CW107C | CW107C | 100% |
| 🇯🇵 | JIS | Japan | C1940 | — | 100% |
Sources: ASTM B888, EN 1758, JIS H3100
Mechanical properties — Pro
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Density |
R470 Hard
| Property | Value | Unit |
|---|---|---|
| Tensile Strength |
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