Chemical composition
Nominal: mid-range where both limits are given, the cap where only a maximum is, balance takes the remainder. Exact specified ranges below.
| Element | Name | Content % | |
|---|---|---|---|
| Main elements3 elements | |||
| Cu | Copper | Bal. | |
| Be | Beryllium | 1.8 – 2% | |
| Ni+Co | Nickel + cobalt | ≥ 0.2% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual3 elements | |||
| Ni+Co+Fe | Nickel + cobalt + iron | ≤ 0.6% | |
| Al | Aluminium | ≤ 0.2% | |
| Si | Silicon | ≤ 0.2% | |
Mechanical minima by form
Guaranteed values differ by form, size and delivery condition; quotations confirm the specification, form, size and condition.
| Form | Condition | Rm MPa | Rp0.2 MPa | A ≥ % |
|---|---|---|---|---|
| Plate, sheet and strip | ||||
| Sheet and strip (≤4.78 mm) | TD02 (solution treated + half-hard cold-worked) | 585 – 690 | — | ≥ 9 |
| Sheet and strip (≤4.78 mm) | TH04 (solution treated + hard cold-worked + aged) | 1310 – 1520 | ≥ 1140 (165 ksi) | ≥ 1 |
| Several forms | ||||
| Plate, sheet, strip and rolled bar | TF00 (solution treated and precipitation aged) | 1140 – 1345 | ≥ 965 (140 ksi) | ≥ 3 |
| Plate, sheet, strip and rolled bar | TB00 (Solution treated) | 415 – 540 | — | ≥ 35 |
Where this grade is recommended
Matched in 5 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| EV drive & battery busbars | Automotive & Racing | 120 – 200 °C | 2 / 5 | 86 |
| Lead frames & packaging | Semiconductor & Vac-Electronics | ≤ 300 °C | 6 / 6 | 84 |
| Brake & drivetrain | Automotive & Racing | ≤ 300 °C | 3 / 5 | 82 |
| Surgical instruments | Medical Devices | In-body (37 °C) | 5 / 5 | 80 |
| Lightweight parts & springs | Automotive & Racing | ≤ 150 °C | 6 / 7 | 80 |
Designations & equivalents
| UNS | C17200 |
| W.Nr. (Germany) | 2.1247 |
| EN material number (copper) | CW101C |
| EN designation | CuBe2 |
| Trade name(s) | Beryllium Copper / CuBe2 / Alloy 25 |
| ASTM / AISI | B194 / B196 / B197 / B570 |
| AMS (SAE aerospace) | 4530 / 4532 |
| JIS (Japan) | C1720 |
| GOST (Russia) | ≈ БрБ2 |
Cross-references are common near-equivalents for search and shortlisting; substitution across standards requires clause-by-clause verification. All grades in one cross-reference table →
Applicable standards
9 specifications. Name the standard and its edition on the order.
Guaranteed values and required tests differ between specifications — see Mechanical minima by form for the figures per form.
Frequently asked questions
What is QBe2 Beryllium Copper (C17200)?
QBe2 Beryllium Copper (C17200) — Copper. Age-hardened ultra-high-strength springs and non-sparking tools
What is the maximum service temperature of QBe2?
Typically about 250 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of QBe2?
The specified minimum tensile strength is 1140 MPa for the main product form. Minima for other forms and sizes are listed under "Mechanical minima by form" on this page.
Which standards cover QBe2?
ASTM B194, ASTM B196, ASTM B197, ASTM B570, AMS 4530, AMS 4532, EN 12163 (copper alloy rod), EN 12167 (copper alloy profiles and bars), EN 1652 (copper plate, sheet and strip)
Where is QBe2 typically used?
EV drive & battery busbars (Automotive & Racing); Lead frames & packaging (Semiconductor & Vac-Electronics); Brake & drivetrain (Automotive & Racing); Surgical instruments (Medical Devices)
In which forms is QBe2 available?
Tube, plate, strip, bar, forgings, wire and other forms — sizes and delivery condition confirmed per order, with EN 10204 3.1 / 3.2 certification.
Same series
Download PDF datasheet
This grade’s datasheet as an A4 PDF — for filing, printing or forwarding to colleagues.
Download PDF datasheetSupply & enquiry
Tube & pipeφ1 – 219 × 0.25 – 25 mm
Plate4.76 – 80 mm
Barφ8 – 300 mm
Wire & filler metalsφ0.01 – 8 mmFor this grade we can supply, against your service conditions:
- Tube, plate, strip, bar, forgings, wire and more — with size range and lead time
- Chemistry and mechanical test report (EN 10204 3.1 / 3.2)
- Like-for-like alternatives and selection advice
- Applicable standards and inspection scope
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