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CoCrMo
DLX
Customized
ISO9001, ROHS
10PCS
10-25 days
Nickel-based casting superalloy
Product Description
CoCrMo is a cobalt-based casting alloy developed for applications requiring a combination of strength, hardness, wear resistance and resistance to corrosion in demanding environments.
Chromium supports the formation of a protective surface oxide layer, while molybdenum contributes to strength, corrosion resistance and microstructural stability. Controlled carbon influences carbide formation, which can affect hardness, wear behavior, ductility and casting performance.
The alloy can be investment cast into complex near-net-shape components. Its final performance is strongly influenced by melting cleanliness, carbon control, casting parameters, grain and carbide structure, porosity, heat treatment, hot isostatic pressing, machining and surface finishing.
Specification
Property | Value |
|---|---|
Material Grade | CoCrMo (F75 Equivalent) |
Industry Standard | ASTM F75, ISO 5832-4 |
Biocompatibility | Cytotoxicity & Sensitization Tested |
Melting Technology | Vacuum Induction Melting (VIM) |
Density | 8.3 g/cm³ |
Melting Range | 1380 °C - 1450 °C |
Hardness (As-cast) | 25 - 35 HRC |
Tensile Strength | ≥ 665 MPa |
Yield Strength | ≥ 450 MPa |
Chemical composition%
Element | Co | Cr | Mo | Ni | Si | Mn | Fe | C |
|---|---|---|---|---|---|---|---|---|
Content (%) | Bal | 27.0-30.0 | 5.0-7.0 | ≤ 0.5 | ≤ 1.0 | ≤ 1.0 | ≤ 0.75 | ≤ 0.35 |
Exceptional Wear Resistance: Ideally suited for articulating surfaces in joint replacements, minimizing metal-on-polyethylene debris.
Ultra-Low Impurity Levels: VIM melting removes trace gas elements (O, N, H), preventing porosity in complex orthopedic castings.
Superior Corrosion Stability: High Chromium content (27-30%) forms a passive oxide layer that resists body fluid degradation.
Precision Grain Structure: Optimized chemical balance ensures a uniform microstructure, critical for post-cast mechanical reliability.
Applications
CoCrMo may be used to manufacture selected femoral components, stems and other hip-system parts requiring strength, corrosion resistance and polished surfaces.
Knee femoral components are a common application where wear resistance, surface finish and dimensional accuracy are important.
Selected tibial baseplates and related structural components may use cast CoCrMo when supported by the device design and qualification program.
The alloy may be used for selected humeral and shoulder-system components requiring strength and wear-resistant surfaces.
DLX Advantage
CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. DLX Alloy supplies cobalt-based casting alloys for medical component manufacturers and precision investment foundries.
Our CoCrMo supply program can be configured around customer-defined chemistry, charge size, product form, inspection, packaging and traceability requirements.
FAQ
CoCrMo is a cobalt-chromium-molybdenum alloy designed for casting components requiring strength, wear resistance, corrosion resistance and dimensional stability.
It offers a useful combination of mechanical strength, hardness, wear resistance, corrosion resistance and polishability. These properties support selected hip, knee and shoulder component applications.
No material should be described as universally biocompatible. Biological safety depends on alloy chemistry, manufacturing, surface condition, cleaning, sterilization, contact type, exposure duration and the completed device’s risk-based evaluation.
No. It is raw casting alloy or remelting feedstock used to manufacture orthopedic components. It is not supplied as a sterilized or approved finished implant.
