CuBe2
CW101CTHE 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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C17200 | C17200 | REF |
| 🇪🇺 | EN | Europe | CuBe2 / CW101C / 2.1247 | CW101C | 100% |
| 🇯🇵 | JIS | Japan | C1720 | — | 100% |
Sources: ASTM B196, EN 12163, JIS H3270
Mechanical properties — Pro
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Elongation |
Aged TH04
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Hardness HRC | ||
| Elastic Modulus | ||
| Density |
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Elongation A |
Precipitation hardened
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength Rp0.2 | ||
| Hardness HRC | ||
| Elongation A |
General
| Property | Value | Unit |
|---|---|---|
| Density | ||
| Electrical Conductivity | ||
| Melting Range |
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