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 | |||
| Co | Cobalt | Bal. | |
| Cr | Chromium | 27 – 30% | |
| Mo | Molybdenum | 5 – 7% | |
| Element | Name | Content % | |
|---|---|---|---|
| Minor & residual9 elements | |||
| C | Carbon | ≤ 0.35% | |
| Ni | Nickel | ≤ 0.5% | |
| Fe | Iron | ≤ 0.75% | |
| Si | Silicon | ≤ 1% | |
| Mn | Manganese | ≤ 1% | |
| W | Tungsten | ≤ 0.2% | |
| N | Nitrogen | ≤ 0.25% | |
| P | Phosphorus | ≤ 0.02% | |
| S | Sulphur | ≤ 0.01% | |
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 ≥ % |
|---|---|---|---|---|
| Implant castings and cast test bars | As-cast | ≥ 665 (96 ksi) | ≥ 450 (65 ksi) | ≥ 8 |
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 |
|---|---|---|---|---|
| Orthopaedic & dental implants | Medical Devices | High-temperature processing | 1 / 8 | 94 |
Designations & equivalents
| UNS | R30075 |
| EN designation | CoCr28Mo |
| Trade name(s) | Vitallium / Haynes 21 / Cast CoCrMo |
| ASTM / AISI | ASTM F75 |
| ISO | ISO 5832-4 |
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
2 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 Cast Co-Cr-Mo (ASTM F75)?
Cast Co-Cr-Mo (ASTM F75) — Co-Cr-Mo alloys. Cast CoCrMo — the standard material for artificial joints and dental castings
What is the maximum service temperature of F75?
Typically about 350 °C; the practical limit depends on media, stress and design life — acceptance per the governing standard.
What is the tensile strength of F75?
The specified minimum tensile strength is 665 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 F75?
ASTM F75, ISO 5832-4
Where is F75 typically used?
Orthopaedic & dental implants (Medical Devices)
In which forms is F75 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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