Cobalt Chrome Additive Manufacturing Providers
Cobalt chrome alloys — CoCrMo and CoCrW — deliver exceptional hardness, wear resistance, and biocompatibility, making them the material of choice for orthopaedic implants, dental prosthetics, and high-temperature turbine components. Additive manufacturing enables patient-specific implant geometries and porous lattice structures that promote bone ingrowth. Browse verified cobalt chrome AM providers on ForgedLink, screened for ASTM F75 compliance, powder recycling protocols, and medical device quality systems.
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Why cobalt chrome is the go-to metal for wear-critical and dental AM
Cobalt-chrome-molybdenum (CoCrMo) occupies a specific and irreplaceable niche in metal AM: it combines biocompatibility with outstanding wear resistance — a combination no other AM metal matches. In orthopaedic articulating surfaces (femoral heads, tibial trays, glenoids), the wear couple between CoCrMo and UHMWPE or ceramic acetabular components is the clinical gold standard with decades of in-vivo data. In dental prosthetics, CoCrMo's hardness, dimensional stability, and corrosion resistance in the oral environment have made it the default framework material for crowns, bridges, and partial denture frameworks for over 30 years.
LPBF and EBM have extended cobalt chrome's reach beyond casting. AM-produced CoCrMo implants can incorporate porous lattice structures engineered for osseointegration — replicating trabecular bone architecture to a degree casting cannot. Patient-specific geometries for complex reconstructions (acetabular revision cups, calcaneal implants, custom cranio-facial implants) are now produced routinely at ISO 13485-qualified providers. CoCrW (cobalt-chrome-tungsten) and Haynes 25 / L605 bring the cobalt alloy family into high-temperature turbine service, where the alloys hold useful strength above 900°C.
Where AM cobalt chrome parts are used in production
Hip and knee arthroplasty implants
LPBF and EBM femoral heads, tibial trays, and patella buttons in CoCrMo ASTM F1537, with engineered trabecular lattice for cementless fixation. In production at multiple major orthopaedic OEMs under FDA 510(k) and CE mark quality systems.
Dental crowns, bridges, and frameworks
The largest volume AM cobalt chrome application globally — millions of CoCrMo dental frameworks printed annually via LPBF in dental laboratories and outsourced dental milling centres. Replaces traditional casting with CAD-accurate, consistent, rapid-turn production.
Spinal implants — interbody fusion cages and rods
TLIF, LLIF, and ALIF interbody cages in ASTM F1537 CoCrMo, with engineered porous lattice at the bone contact surfaces for biological integration. Custom cages for complex reconstruction cases are patient-specific.
Turbine vanes and hot-section hardware
CoCrW (Haynes 25 / L605) turbine vanes and combustor components for industrial gas turbines and aero-engines where the cobalt alloy's oxidation resistance above 900°C is required.
Orthopaedic surgical instruments
CoCrMo patient-matched cutting guides, drill guides, and trial implants for joint replacement surgery — printed to the patient's CT scan geometry and used in a single surgery.
Wear-resistant industrial components
Stellite-grade CoCrW overlays, wear pads, and hardfacing components in oil-and-gas and mining applications, produced by DED or LPBF for extreme-wear environments.
Common cobalt chrome grades for AM
CoCrMo ASTM F75 (as-cast composition)
The medical-implant workhorse. ASTM F75 is the classic as-cast CoCrMo composition (Co-28Cr-6Mo), widely adapted for LPBF and EBM. ~800–950 MPa UTS as-built; higher after solution and age. Default for dental frameworks and orthopaedic implants.
CoCrMo ASTM F1537 (wrought composition)
Higher-purity, lower-carbon variant of F75 with tighter chemistry limits. Mandated for load-bearing orthopaedic implants requiring fatigue qualification under ASTM F2996. Better fatigue and ductility than F75.
CoCrW / Stellite 6 (Co-28Cr-4W)
Tungsten-bearing cobalt alloy for hard-facing and wear-resistant overlays. Hardness up to 40 HRC. Also produced by LPBF for DED-deposited wear-layer applications on steel substrates.
Haynes 25 / L605 (Co-20Cr-15W-10Ni)
High-temperature cobalt superalloy for turbine vanes and combustor hardware. Useful strength above 900°C, exceptional oxidation resistance. Available on a smaller subset of LPBF providers.
ASTM F3091 (CoCr LPBF — medical)
The medical-device specific LPBF CoCr material standard (equivalent to F75 for powder-bed produced implants). Governs powder chemistry, build parameters, and post-process heat treatment requirements for regulatory submission.
When to choose AM cobalt chrome over titanium, stainless steel, or Inconel
CoCrMo vs titanium for orthopaedics: CoCrMo wins on wear resistance — for articulating surfaces (femoral heads against UHMWPE or ceramic), cobalt chrome is the clinical standard. Titanium wins on osseointegration (particularly EBM porous cages), weight, and fatigue in thin-section implants. Both are biocompatible; the choice is driven by the function of the specific implant component.
CoCrMo vs stainless steel: CoCrMo gives substantially better corrosion resistance in physiological chloride environments and better wear resistance — stainless 316L ion leaching in the body is a known concern for load-bearing implants. Stainless wins on cost and machinability for non-implantable medical instruments.
CoCrW vs Inconel for turbine work: CoCrW (Haynes 25) wins on oxidation resistance and hot corrosion above 900°C. Inconel wins on creep strength at moderate temperatures (700–800°C). Different hot-section positions; choose by the dominant failure mode (creep vs oxidation) at the operating temperature.
AM CoCrMo vs cast CoCrMo: AM wins for patient-specific geometry, porous lattice structures for osseointegration, and rapid-turn dental frameworks. Cast CoCrMo wins for high-volume implants where investment casting economics are well-established and the design geometry is stable.
Cost and lead time for AM cobalt chrome parts
First-article AM CoCrMo parts for medical applications typically deliver in 4–7 weeks when the production chain includes solution annealing or hot isostatic pressing, NDT, and ISO 13485 documentation. Dental frameworks are a notable exception — dental-specific LPBF centres routinely deliver CoCrMo crowns and bridges in 3–5 working days without the full medical-device QMS overhead. Turbine-grade CoCrW parts run 4–6 weeks with heat treatment and NDT qualification.
Indicative pricing for a 100 cm³ CoCrMo LPBF part (medical, with solution anneal): £600–£1,100 / €700–€1,300 — between stainless and titanium pricing. Dental frameworks are typically priced per unit (crown framework ~£20–£50 / €24–€60; bridge spanning 3–4 units ~£60–£120 / €70–€140). Turbine CoCrW parts run similar to or slightly above titanium pricing due to lower provider count and specialty heat-treatment requirements.
Related processes & materials
Frequently asked questions
Is cobalt chrome biocompatible for medical implants?
Yes — CoCrMo has one of the longest clinical track records in orthopaedics, with hip and knee implants in service for over 50 years. ASTM F75 and F1537 govern the chemistry and mechanical requirements for implant-grade cobalt chrome. The alloy is approved under FDA 510(k) and CE mark quality systems for load-bearing orthopaedic implants. Note: cobalt and chromium ion release from wear debris is a known concern in large-head metal-on-metal hip bearings — this has driven some clinical preference toward ceramic-on-ceramic couples, not AM specifically.
What's the difference between CoCrMo ASTM F75 and F1537?
F75 is the as-cast composition specification — the same chemistry used for decades of CoCrMo investment casting, adapted for AM powder. F1537 is the wrought-bar specification with tighter carbon and nitrogen limits, giving better fatigue and ductility. For AM, most providers reference F75 for initial material qualification; load-bearing implants requiring fatigue qualification under ASTM F2996 typically specify F1537 chemistry with additional AM-specific process controls.
Why is cobalt chrome used for dental frameworks?
Three reasons: (1) hardness — CoCrMo resists wear from opposing dentition better than polymer or softer metals; (2) corrosion resistance in saliva, acidic foods, and oral bacteria environments; (3) dimensional stability — CoCrMo frameworks maintain fit geometry under occlusal load over years of service. AM (specifically LPBF) has displaced traditional lost-wax casting for CoCrMo dental frameworks in most high-volume dental laboratories due to speed, accuracy, and material consistency.
Does AM cobalt chrome need HIP?
For fatigue-critical load-bearing orthopaedic implants — yes, HIP is standard practice and often required by the regulatory pathway. For dental frameworks and non-fatigue-critical medical instruments, solution annealing is typically sufficient. For turbine hardware, HIP is specified per the relevant aerospace flow-downs. As-built LPBF CoCrMo density is typically >99.5% — HIP closes the remaining porosity and recovers fatigue properties closer to wrought-equivalent levels.
Can AM cobalt chrome be post-processed like cast cobalt chrome?
Yes, for most operations — CNC machining, polishing, EDM, and surface finishing all work on AM CoCrMo, with similar tooling and parameters to cast equivalents. The as-built AM surface is rougher than a cast and hand-finished implant surface (Ra ~10–20 µm vs ~0.5–1 µm polished), so post-print finishing is required for articulating surfaces. Electropolishing is commonly used for dental frameworks and instrument surfaces.