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 elements2 elements | |||
| W | Tungsten | Bal. | |
| Cu | Copper | 18 – 22% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual2 elements | |||
| Additive | Additive, each | ≤ 1% | |
| Additive | Additives, total | ≤ 1% | |
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 ≥ % | Other requirements and notes |
|---|---|---|---|---|---|
| Powder-metallurgy electrical contact parts | Class E, about 80W-20Cu; properties by agreement on the order | — | — | — | Typical, informative: Density 15 g/cm³ · Hardness 94 HRB – 106 HRB · Conductivity (infiltrated) 38–45 %IACS · Conductivity (LPS) 25–37 %IACS |
Where this grade is recommended
Matched in 1 service conditions; ranks and scores computed from the condition-scoring matrix.
| Service condition | Industry | Temperature | Rank | Score |
|---|---|---|---|---|
| Vacuum electronics | Semiconductor & Vac-Electronics | 400 – 900 °C | 4 / 8 | 84 |
Designations & equivalents
| Trade name(s) | CuW80 / W80Cu20 / Elkonite |
| ASTM / AISI | ASTM B702 |
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
Name the standard and its edition on the order.
Frequently asked questions
What is W-Cu 80/20 Electrode Alloy?
W-Cu 80/20 Electrode Alloy — Tungsten. EDM electrodes, HV contacts and heat sinks — conductive and arc-resistant
What is the maximum service temperature of W80Cu20?
Typically about 900 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
Which standards cover W80Cu20?
ASTM B702-93
Where is W80Cu20 typically used?
Vacuum electronics (Semiconductor & Vac-Electronics)
In which forms is W80Cu20 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
Or email us: info@kochlin.com