CoCrMo Sputtering Target (ASTM F75) — Cobalt Chromium Molybdenum for Biocompatible Wear-Resistant Coatings
Our ASTM F75 cobalt‑chromium‑molybdenum sputtering target is premium metallurgical material designed for PVD biocompatible wear‑resistant thin‑film coatings. Conforming to ASTM F75 medical‑grade alloy standard, this Co‑Cr‑Mo target features precisely controlled elemental ratios, high density and homogeneous grain structure to enable stable sputtering output and uniform film deposition. Deposited coatings exhibit outstanding biocompatibility, superior wear resistance and great corrosion resistance against bodily fluids. It is extensively applied for surface modification of orthopedic implants, dental prostheses and surgical components. Strict impurity elimination and rigorous composition calibration deliver consistent batch performance, supporting reliable large‑scale magnetron sputtering for biomedical device manufacturing.
CoCrMo Planar and Rotary Target Technical Specifications
| Product | Co/Cr/Mo Sputtering Target — Cobalt–Chromium–Molybdenum alloy (ASTM F75) for biocompatible wear-resistant coatings |
| Composition | ASTM F75 (UNS R30075): Cr 27–30%, Mo 5–7%, C ≤0.35%, balance Co |
| Component Elements | Cobalt (Co, Z=27) + Chromium (Cr, Z=24) + Molybdenum (Mo, Z=42) |
| CAS | Co 7440-48-4 / Cr 7440-47-3 / Mo 7439-98-7 (alloy — no single CAS) |
| Purity Grades | 99.95% (3N5) | ≥99.5% |
| Density | 8.3–8.6 g/cm³ |
| Melting Point | 1,300–1,400°C |
| Crystal Structure | fcc (γ-Co matrix, ASTM F75) with Cr/Mo solid-solution strengthening and carbide precipitates |
| Key Property | Biocompatible (ISO 10993), corrosion-resistant in body fluids, high wear resistance |
| Grain Size | <100 μm (typical for consolidated sputtering targets) |
| Target Forms | Planar round, planar rectangular, rotary targets, bonded assemblies |
| Backing Plate | OFHC Copper / Ti backing — indium bonding, elastomer bonding, or solder bonding |
| Manufacturing | Vacuum melting / powder metallurgy → HIP → machining → inspection |
Product Overview
CoCrMo sputtering targets — also known as cobalt chromium molybdenum sputtering targets or ASTM F75 sputtering targets — are high-purity cobalt–chromium–molybdenum alloy consumable cathode materials used in magnetron sputtering to deposit biocompatible, wear-resistant coatings. Princeton Powder supplies the ASTM F75 (UNS R30075) composition — Cr 27–30%, Mo 5–7%, C ≤0.35%, balance Co — at purities of ≥99.5% to 99.95% (3N5). CAS: Co 7440-48-4 / Cr 7440-47-3 / Mo 7439-98-7.
CoCrMo (ASTM F75) is the gold-standard biomedical implant alloy: its chromium-rich oxide passivation layer resists corrosion in body fluids, while the Cr/Mo solid-solution strengthening and carbide precipitates provide high wear resistance — properties that have made it the material of choice for orthopedic joints, dental restorations, and cardiovascular stents for decades. As a CoCrMo sputtering target supplier with ISO 9001:2015 certification, Princeton Powder delivers bonded CoCrMo sputtering targets on OFHC copper or titanium backing plates, plus planar and rotary configurations. Whether you need a custom CoCrMo sputtering target for a medical device coating line or a small R&D target for tribocorrosion research, our team adjusts composition within ASTM F75 limits to your deposition recipe. Buy CoCrMo sputtering targets directly from the manufacturer with application-specific process guidance included.
Manufacturing Process & Quality Control
Manufacturing Process
Every Princeton Powder CoCrMo alloy sputtering target is manufactured through a controlled sequence designed to achieve the composition accuracy and homogeneous microstructure that reproducible biocompatible deposition demands:
- Raw Material Selection: High-purity cobalt (≥99.9%), chromium (≥99.9%), and molybdenum (≥99.9%) feedstock is sourced, verified against CoA, and precisely weighed to the ASTM F75 composition (±0.5 wt% tolerance).
- Vacuum Melting / Powder Metallurgy: The Co, Cr, and Mo charge is consolidated under vacuum to eliminate dissolved gases and achieve uniform alloying. Vacuum processing minimizes oxide and carbide defects that would otherwise create spitting and arcing during sputtering.
- Hot Isostatic Pressing (HIP): The consolidated material is HIP'd at elevated temperature and pressure to close porosity and achieve high density with uniform microstructure.
- Machining: CNC precision-machining to final target dimensions with tight tolerances (diameter ±0.1 mm, thickness ±0.05 mm).
- Inspection & Packaging: 100% dimensional verification, ICP-OES full composition analysis, C-scan bond inspection (for bonded assemblies), and vacuum-sealed packaging with desiccant. Each target is individually serialized for full traceability.
Available Target Forms
| Form | Description | Typical Applications |
|---|---|---|
| Planar Round Targets | Circular discs, standard Ø25–300 mm. Monolithic CoCrMo or bonded to Cu/Ti backing. | R&D magnetrons, implant coating prototyping, university research |
| Planar Rectangular Targets | Rectangular plates, custom W×L. For large-area sputtering systems. | Medical device coating production lines |
| Rotary Targets | Cylindrical targets for rotating magnetron cathodes. >70% material utilization. | High-volume implant coating lines |
| Bonded Assemblies | CoCrMo target bonded to OFHC Cu or Ti backing plate. C-scan verified. | High-power sputtering requiring thermal dissipation |
Applications
CoCrMo for Medical Implants — Biocompatible Orthopedic & Dental Coatings
CoCrMo for medical implant coatings is the flagship application: the ASTM F75 alloy is the established material for orthopedic joints (hip and knee), dental frameworks, and cardiovascular stents, valued for its biocompatibility and resistance to corrosion in body fluids. Sputtered CoCrMo coatings transfer these properties onto polymer, titanium, or steel implant surfaces, improving wear resistance at articulating interfaces while maintaining a passive, tissue-compatible surface.
Peer-reviewed research confirms CoCrMo's tribocorrosion behavior: studies of coatings on CoCrMo substrates in physiological 0.89% NaCl solution (Journal of Bio- and Tribo-Corrosion) show how surface treatments modulate the alloy's wear-corrosion response — directly relevant to how sputtered CoCrMo coatings perform in the body. Princeton Powder's CoCrMo sputtering targets deliver the ASTM F75 chemistry and low-impurity content that reproduce these biocompatible properties in deposited films. Pair CoCrMo with Ti6Al4V targets for complete implant coating stacks.
CoCrMo for Wear-Resistant Industrial Coatings — Tools & Sliding Components
Beyond implants, the CoCrMo sputter target deposits wear-resistant coatings for industrial tools, cutting edges, and sliding components where both abrasion resistance and corrosion resistance are required. The same molybdenum-strengthened microstructure that resists wear in the body also protects tooling and machine parts against metal-to-metal contact, galling, and aggressive environments.
Research on Co-Cr-Mo alloy coatings for surgical implants produced by centrifugal spray (Surface and Coatings Technology, 2005) confirms the alloy's coating processability and wear performance — principles that extend to magnetron-sputtered CoCrMo coatings for industrial wear parts. Compare with CoCrW (Stellite-type) targets for applications prioritizing hardness over biocompatibility.
CoCrMo for Aerospace / Turbine & Chemical Processing — Protective Films
In aerospace and chemical processing, the CoCrMo sputter target provides protective coatings that combine wear resistance with resistance to oxidation and corrosive chemical environments. The chromium-rich passive oxide layer resists attack in chloride and oxidizing media, making CoCrMo coatings suitable for turbine components, pumps, and valves exposed to both mechanical wear and corrosive fluids.
The cobalt-chromium superalloy family — of which CoCrMo is the biocompatible member — is engineered for exactly this dual role of wear and corrosion resistance at temperature. Princeton Powder supplies research-format targets (1″–3″ diameter) with full CoA and ICP-OES verification for systematic composition and tribology studies. Browse our full sputtering target catalog for matching protective and functional coatings.
Why Choose Princeton Powder CoCrMo Sputtering Targets
- ASTM F75 Composition — The Implant Standard, Verified: Princeton Powder CoCrMo targets meet ASTM F75 (Cr 27–30%, Mo 5–7%, C ≤0.35%) chemistry, verified by ICP-OES on every target — the same composition trusted in medical implants for decades.
- Custom CoCrMo Composition — Within or Beyond F75 Limits: Adjust Cr/Mo ratios within ASTM F75 limits for your device design, or request custom compositions for non-medical wear applications. ±0.5 wt% tolerance.
- Low-Impurity Processing — Preserved Biocompatibility: Vacuum melting with controlled impurity content prevents the trace contamination that could compromise the passive corrosion behavior and biocompatibility of deposited films.
- Bonded CoCrMo Sputtering Targets — C-Scan Verified: Indium or elastomer bonding to OFHC copper or titanium backing plates for optimal thermal management, with C-scan inspection to guarantee bond quality.
- Validated Performance — Backed by Published Data: CoCrMo's tribocorrosion and coating behavior is documented in peer-reviewed research (Journal of Bio- and Tribo-Corrosion; Surface and Coatings Technology, 2005) — real performance, not marketing claims.
Frequently Asked Questions About Medical CoCrMo Sputtering Target
What is a CoCrMo sputtering target used for?
A CoCrMo (cobalt–chromium–molybdenum) sputtering target is used in magnetron sputtering to deposit biocompatible, wear-resistant coatings for three main applications: (1) medical implants — orthopedic joints, dental frameworks, and stents requiring corrosion resistance in body fluids; (2) wear-resistant industrial coatings — tools and sliding components; and (3) aerospace / chemical processing — protective films combining wear and corrosion resistance.
How is a CoCrMo sputtering target made?
CoCrMo sputtering targets are made by vacuum melting or powder metallurgy of precisely weighed high-purity cobalt, chromium, and molybdenum feedstock, followed by hot isostatic pressing (HIP) to close porosity and achieve uniform microstructure, then CNC machining to final dimensions. Vacuum processing minimizes oxide and carbide defects that cause spitting and arcing, and preserves the low-impurity content required for biocompatibility. Every target ships with a full CoA and ICP-OES composition report.
Is CoCrMo biocompatible?
Yes. CoCrMo (ASTM F75) is one of the most established biocompatible alloys, meeting ISO 10993 biocompatibility requirements. Its chromium-rich passive oxide layer resists corrosion in body fluids, and it has been the standard material for orthopedic implants (hip and knee joints), dental restorations, and cardiovascular stents for decades. Sputtered CoCrMo coatings transfer these biocompatible properties onto other substrates.
What is the composition of CoCrMo (ASTM F75)?
ASTM F75 (UNS R30075) specifies Cr 27–30%, Mo 5–7%, C ≤0.35%, balance cobalt. Chromium provides the corrosion-resistant passive oxide layer and forms carbides, while molybdenum strengthens the solid solution and enhances wear resistance. Princeton Powder supplies CoCrMo targets meeting this standard composition, with custom Cr/Mo ratios available on request.
What is the difference between CoCrMo and CoCrW?
Both are cobalt-chromium superalloys with wear resistance, but they serve different primary purposes. CoCrMo (ASTM F75) is the biocompatible implant alloy, optimized for corrosion resistance in body fluids and wear performance in articulating joints. CoCrW (Stellite-type) is optimized for maximum hardness and high-temperature wear resistance in tooling, valve, and turbine applications. Choose CoCrMo for medical/biological compatibility; choose CoCrW for extreme abrasion and high-temperature wear.
What CoCrMo composition do I need for implant coating?
The standard choice for medical implant coatings is ASTM F75 (Cr 27–30%, Mo 5–7%, balance Co), which matches the bulk implant alloy and ensures coating-substrate compatibility. The exact Cr/Mo ratio within F75 limits can be tuned for specific wear or corrosion requirements. Princeton Powder's engineering team can recommend the optimal composition for your specific implant or device design.
Research & Technical References
The following peer-reviewed research validates the biocompatibility, wear resistance, and coating processability of CoCrMo (ASTM F75) alloy. Princeton Powder CoCrMo targets meet or exceed the material specifications used in these studies.
Tribocorrosion Behaviour of Duplex S/Cr(N) and S/Cr(C) Coatings on CoCrMo Alloy in 0.89% NaCl Solution
Journal of Bio- and Tribo-Corrosion — Characterized the combined wear-corrosion (tribocorrosion) behavior of surface-treated CoCrMo alloy in physiological saline, quantifying how coatings modulate the wear-corrosion response relevant to implants. Practical takeaway: CoCrMo's surface engineering governs its in-vivo wear-corrosion performance — Princeton Powder targets enable precise coating deposition.
Coating of Co–Cr–Mo alloy for surgical implants by centrifugal spray
Surface and Coatings Technology, 2005 — Demonstrated the deposition of Co-Cr-Mo alloy coatings for surgical implants, confirming the alloy's coating processability and wear performance. Practical takeaway: CoCrMo is a proven coating material for implant surfaces; Princeton Powder targets extend this to magnetron sputtering.
Contact our technical team for the complete reference list and to discuss CoCrMo alloy sputtering target specifications for your specific deposition process.