1. Introduce
– One of the finest cobalt-based alloys used as a biomaterial
– ASTM F-75 : Standard Specification for CCM Alloys for Surgical Implants
– UNS R30075
* CCM : Abbreviation for Co-Cr-Mo
* UNS
- Abbreviation for Unified Numbering Systems for Metals and Alloys
- Unified unique numbering system for metals and alloys
- A representative number that is compatible with metals and alloys defined in many material-related codes such as ASTM, AISI, ASME, AWS, etc.
* R : Reactive and Refractory Metals and Alloys
* UNS R30075 : 3XXXX : Cobalt
2. Property
– Excellent strength, ductility, hardness, corrosion resistance, wear resistance
– Non-magnetic, biocompatible properties
| Element | Impact |
|---|---|
| Co | Provides high strength, high temperature corrosion resistance, creep resistance, oxidation resistance, abrasion resistance |
| Cr | Provides corrosion resistance |
| Mo, C | Provides excellent mechanical properties such as solid solution strengthening, precipitation strengthening, hardness, wear resistance, etc. |
[F-75 Chemical Chemical Composition (%)]
| Co | Cr | Mo | Ni | Fe |
|---|---|---|---|---|
| 61.20 ~ 68.00 | 27.00 ~ 30.00 | 5.00 ~ 7.00 | Max. 0.20 | Max. 0.17 |
| C | Si | W | P | S |
|---|---|---|---|---|
| Max. 0.02 | Max. 0.10 | Max. 0.20 | Max. 0.02 | Max. 0.01 |
| N | Al | Ti | B | Mg |
|---|---|---|---|---|
| Max. 0.05 | Max. 0.01 | Max. 0.01 | Max. 0.01 | Max. 1.00 |
[F-75 Mechanical Properties]
| Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) |
|---|---|---|
| Min. 655 | Min. 450 | Min. 8 |
[F-75 Physical Properties]
| Density (g/㎤) | Melting Range (℃) | Specific Heat (0-100℃), J/kg*℃ |
|---|---|---|
| 9.62 | 1350 ~ 1430 | 450 |
3. Standard & Specification
– Specification : UNS R30075
| ASTM | F75, F799, F1537 |
4. Available Form
– Plate, Sheet
– Bar, Rod
– Coil, Strip
– Pipe, Tube
5. Application & Product
– Medical, Aerospace
| Application | Product |
|---|---|
| Medical | Implants (dental, orthopedic) |
| Aerospace | Aircraft, Gas turbine blades, Fuel injection nozzles, Vanes |
(1) Dental implants / (2) Orthopedic implants / (3) Turbine blades / (4) Fuel nozzles for gas turbines
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