Is cobalt-chromium stronger than stainless steel?
The cobalt alloy has higher strength than stainless steel—allowing thinner struts while maintaining radial strength.
How strong is cobalt alloy?
4.4. 2 Cobalt Alloys
| Property | ASTM F75 | ASTM F90 |
|---|---|---|
| As-Cast/Annealed | Annealed | |
| Elastic modulus (GPa) | 210 | 210 |
| Yield strength (MPa) | 450 | 448–648 |
| Tensile strength (MPa) | 655 | 951–1220 |
What is cobalt alloy steel?
Cobalt steel is a type of high-speed alloy steel used primarily for cutting tools. Introduced to manufacturers in 1900, high-speed steel, containing a mixture of tungsten, chromium, and trace amounts of carbon, enabled manufacturers to double or even triple their production.
Is cobalt chrome harder than steel?
Cobalt chrome is harder than stainless steel, therefore, harder to scratch. Although not 100% scratch proof like tungsten carbide, it is much harder than titanium, and all precious metals including platinum, gold and silver.
What is cobalt chromium alloy?
About Cobalt Chromium Alloy. Cobalt Chromium is one of numerous metal alloys sold by American Elements under the trade name AE Alloys™. Generally immediately available in most volumes, AE Alloys™ are available as bar, ingot, ribbon, wire, shot, sheet, and foil. Ultra high purity and high purity forms also include metal powder,…
What is the corrosion resistance of cobalt alloys?
Cobalt alloys show an extremely high degree of corrosion resistance even in chloride surroundings due to the spontaneous creation of a chromium oxide (Cr2 O 3) passive layer within the human body [81]. These biomaterials possess superior mechanical properties such as greater resistance to fatigue and good wear resistance to corrosion.
Are cobalt-based alloys better than stainless steel?
The cobalt-based alloys exhibit balance between biocompatibility and mechanical properties; both forms are somewhat better than stainless steel in corrosion resistance and strength but more costly to design. Cobalt-based alloys are better than stainless steel with regard to its corrosion stability.
What is the microstructure of cobalt-based alloy?
The microstructure of cobalt-based alloys possesses a cobalt-rich solid-solution medium having carbides (Cr 7 C 3, and M 23 C 6) in which W, Cr, Ta, Ni, Zr, Si, and Co may be found in a single carbide particle [87].