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 elements1 element | |||
| Cu+Ag | Copper (incl. silver) | ≥ 99.95% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual3 elements | |||
| O | Oxygen | ≤ 0.001% | |
| Other | Elements other than copper and silver, total (max by difference) | ≤ 0.05% | |
| Deox. | Metallic or other deoxidiser | Not permitted | |
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 ≥ % |
|---|---|---|---|---|
| Wire and filler metals | ||||
| Electrolytic copper wire rod (6.4–35 mm) | Hot-worked or annealed | — | — | ≥ 30 |
| Several forms | ||||
| Sheet, strip, plate and rolled bar | H01, cold-rolled (1/4 hard) | 235 – 290 | — | — |
| Sheet, strip, plate and rolled bar | H02, cold-rolled (1/2 hard) | 255 – 315 | — | — |
| Sheet, strip, plate and rolled bar | O60, soft annealed | — | — | — |
| Refinery wire bar, cake and billet | Grade 2 / C10200 / OF | — | — | — |
Where this grade is recommended
Matched in 7 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Vacuum electronics | Semiconductor & Vac-Electronics | ≤ 400 °C | 1 / 8 | 95 |
| EV drive & battery busbars | Automotive & Racing | ≤ 120 °C | 1 / 5 | 94 |
| Battery tabs & collectors | Hydrogen & New Energy | ≤ 80 °C | 1 / 4 | 94 |
| Lead frames & packaging | Semiconductor & Vac-Electronics | ≤ 300 °C | 1 / 6 | 92 |
| Sputtering targets | Semiconductor & Vac-Electronics | Ambient | 5 / 6 | 87 |
| Imaging equipment & targets | Medical Devices | In-body (37 °C) | 5 / 5 | 84 |
| Coating equipment & targets | Solar & Glass | ≤ 600 °C | 4 / 4 | 82 |
Designations & equivalents
| UNS | C10200 |
| W.Nr. (Germany) | 2.0040 |
| EN material number (copper) | CW008A |
| EN designation | Cu-OF |
| Trade name(s) | OFHC / OF Copper |
| ASTM / AISI | B49 / B111 / B152 / B170 / B187 / B395 |
| JIS (Japan) | C1020 |
| GOST (Russia) | ≈ М0б |
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
8 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 TU1 Oxygen-Free Copper (C10200)?
TU1 Oxygen-Free Copper (C10200) — Copper. Electron-tube grade high-purity copper
What is the maximum service temperature of TU1?
Typically about 150 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of TU1?
The specified minimum tensile strength is 235 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 TU1?
ASTM B49, ASTM B152/B152M, ASTM B170, ASTM B187/B187M, ASTM B111/B111M, ASTM B395/B395M, EN 12449 (seamless copper tubes), EN 1652 (copper plate, sheet and strip)
Where is TU1 typically used?
Vacuum electronics (Semiconductor & Vac-Electronics); EV drive & battery busbars (Automotive & Racing); Battery tabs & collectors (Hydrogen & New Energy); Lead frames & packaging (Semiconductor & Vac-Electronics)
In which forms is TU1 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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