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Cobalt Chromium Molybdenum Alloy

Linear Formula:



Co- Cr-28% Mo-6% alloy 1
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Co- Cr-28% Mo-6% alloy 2
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Co- Cr-28% Mo-6% alloy 3
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Co- Cr-28% Mo-6% cast
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Co-63% Cr-30% Mo-7%
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Cobalt Chromium Molybdenum Alloy Properties


8.4 g/cm3 (520 lb/ft3)

Thermal Expansion

12 µm/m-K

Tensile Strength

780 to 1280 MPa (Ulitmate)/ 480 to 840 MPa (Yield)

Thermal Conductivity

13 W/m-K

Young's Modulus

210 to 250 GPa

Poisson's Ratio


Electrical Resistivity

-6 10x Ω-m

Specific Heat

450 J/kg-K

Cobalt Chromium Molybdenum Alloy Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Transport Information N/A

About Cobalt Chromium Molybdenum Alloy

Cobalt Chromium Molybdenum 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, submicron powder and nanoscale, targets for thin film deposition, and pellets for chemical vapor deposition (CVD) and physical vapor deposition (PVD) applications. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Primary applications include bearing assembly, ballast, casting, step soldering, and radiation shielding. Cobalt-chromium based alloys or ceramic materials (aluminum oxide or zirconium oxide) are used in making orthopedic implants. These bio-medical materials are biocompatible, resistant to corrosion, degradation, and wear, and they have mechanical properties that duplicate the structures they are intended to replace.

Cobalt Chromium Molybdenum Alloy Synonyms

CoCrMo Super Alloy; Cobalt-Chromium-Molybdenum, Dispersion Strengthened Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 3, R31539), High Carbon Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 2, ISO 5832-12 Alloy 2, R31538), Low Carbon Co-28Cr-6Mo Alloy (ASTM F1537 Alloy 1, ISO 5832-12 Alloy 1, R31537), UNS R30075 (ASTM F75 F-75, ISO 5832-4) Co-Cr-Mo Alloy

Cobalt Chromium Molybdenum Alloy Chemical Identifiers

Linear Formula


Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Chromium products. Chromium (atomic symbol: Cr, atomic number: 24) is a Block D, Group 6, Period 4 element with an atomic weight of 51.9961. Chromium Bohr ModelThe number of electrons in each of Chromium's shells is 2, 8, 13, 1 and its electron configuration is [Ar] 3d5 4s1. Chromium was first discovered by Louis Nicolas Vauquelin in 1797. It was first isolated in 1798, also by Louis Nicolas Vauquelin. The chromium atom has a radius of 128 pm and a Van der Waals radius of 189 pm. In its elemental form, chromium has a lustrous steel-gray appearance. Elemental ChromiumChromium is the hardest metal element in the periodic table and the only element that exhibits antiferromagnetic ordering at room temperature, above which it tranforms into a paramagnetic solid. The most common source of chromium is chromite ore (FeCr2O4). Due to its various colorful compounds, Chromium was named after the Greek word 'chroma' meaning color.

See more Cobalt products. Cobalt (atomic symbol: Co, atomic number: 27) is a Block D, Group 9, Period 4 element with an atomic weight of 58.933195. Cobalt Bohr ModelThe number of electrons in each of cobalt's shells is 2, 8, 15, 2 and its electron configuration is [Ar] 3d7 4s2The cobalt atom has a radius of 125 pm and a Van der Waals radius of 192 pm. Cobalt was first discovered by George Brandt in 1732. In its elemental form, cobalt has a lustrous gray appearance. Cobalt is found in cobaltite, erythrite, glaucodot and skutterudite ores. Elemental CobaltCobalt produces brilliant blue pigments which have been used since ancient times to color paint and glass. Cobalt is a ferromagnetic metal and is used primarily in the production of magnetic and high-strength superalloys. Co-60, a commercially important radioisotope, is useful as a radioactive tracer and gamma ray source. The origin of the word Cobalt comes from the German word "Kobalt" or "Kobold," which translates as "goblin," "elf" or "evil spirit." For more information on cobalt, including properties, safety data, research, and American Elements' catalog of cobalt products, visit the Cobalt element page.

See more Molybdenum products. Molybdenum (atomic symbol: Mo, atomic number: 42) is a Block D, Group 6, Period 5 element with an atomic weight of 95.96. Molybdenum Bohr ModelThe number of electrons in each of molybdenum's shells is [2, 8, 18, 13, 1] and its electron configuration is [Kr] 4d5 5s1. The molybdenum atom has a radius of 139 pm and a Van der Waals radius of 209 pm. In its elemental form, molybdenum has a gray metallic appearance. Molybdenum was discovered by Carl Wilhelm in 1778 and first isolated by Peter Jacob Hjelm in 1781. Molybdenum is the 54th most abundant element in the earth's crust. Elemental MolybdenumIt has the third highest melting point of any element, exceeded only by tungsten and tantalum. Molybdenum does not occur naturally as a free metal, it is found in various oxidation states in minerals. The primary commercial source of molybdenum is molybdenite, although it is also recovered as a byproduct of copper and tungsten mining. The origin of the name Molybdenum comes from the Greek word molubdos meaning lead.

Recent Research

Effect of molybdenum and niobium on the phase formation and hardness of nanocrystalline CoCrFeNi high entropy alloys., Praveen, S, Murty B S., and Kottada Ravi S. , J Nanosci Nanotechnol, 2014 Oct, Volume 14, Issue 10, p.8106-9, (2014)

Biomimetic apatite formed on cobalt-chromium alloy: A polymer-free carrier for drug eluting stent., Chen, Cen, Yao Chenxue, Yang Jingxin, Luo Dandan, Kong Xiangdong, Chung Sung-Min, and Lee In-Seop , Colloids Surf B Biointerfaces, 2017 Mar 01, Volume 151, p.156-164, (2017)

A comparison of Staphylococcus aureus biofilm formation on cobalt-chrome and titanium-alloy spinal implants., Patel, Shalin S., Aruni Wilson, Inceoglu Serkan, Akpolat Yusuf T., Botimer Gary D., Cheng Wayne K., and Danisa Olumide A. , J Clin Neurosci, 2016 Sep, Volume 31, p.219-23, (2016)

Hybrid framework with cobalt-chromium alloy and gold cylinder for implant superstructure: Bond strength and corrosion resistance., Yoshinari, Masao, Uzawa Shinobu, and Komiyama Yataro , J Prosthodont Res, 2016 Oct, Volume 60, Issue 4, p.274-281, (2016)

Electrochemical etching of micro-pores in medical grade cobalt-chromium alloy as reservoirs for drug eluting stents., Fuchsberger, Kai, Binder Karoline, Burkhardt Claus, Freudigmann Christian, Herrmann Markus, and Stelzle Martin , J Mater Sci Mater Med, 2016 Mar, Volume 27, Issue 3, p.47, (2016)

The effects of cobalt-chromium-molybdenum wear debris in vitro on serum cytokine profiles and T cell repertoire., Pearson, Mark J., Williams Richard L., Floyd Hayley, Bodansky David, Grover Liam M., Davis Edward T., and Lord Janet M. , Biomaterials, 2015 Oct, Volume 67, p.232-9, (2015)

Chromium(0), Molybdenum(0), and Tungsten(0) Isocyanide Complexes as Luminophores and Photosensitizers with Long-Lived Excited States., Büldt, Laura A., and Wenger Oliver S. , Angew Chem Int Ed Engl, 2017 May 15, Volume 56, Issue 21, p.5676-5682, (2017)

Biological monitoring of welders' exposure to chromium, molybdenum, tungsten and vanadium., Ellingsen, Dag G., Chashchin Maxim, Berlinger Balázs, Fedorov Vladimir, Chashchin Valery, and Thomassen Yngvar , J Trace Elem Med Biol, 2017 May, Volume 41, p.99-106, (2017)

Electrodeposited-hydroxide surface-covered porous nickel-cobalt alloy electrodes for efficient oxygen evolution reaction., Prataap, R K. Vishnu, and Mohan S , Chem Commun (Camb), 2017 Mar 16, Volume 53, Issue 23, p.3365-3368, (2017)

Is quantitative coronary angiography reliable in assessing the late lumen loss of the everolimus eluting bioresorbable polylactide scaffold in comparison with the cobalt chromium metallic stent?, Sotomi, Yohei, Onuma Yoshinobu, Miyazaki Yosuke, Asano Taku, Katagiri Yuki, Tenekecioglu Erhan, Jonker Hans, Dijkstra Jouke, de Winter Robbert J., Wykrzykowska Joanna J., et al. , EuroIntervention, 2017 Mar 07, (2017)


June 24, 2017
Los Angeles, CA
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