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Cobalt Chromium Molybdenum Casting Description:
Cobalt-chromium molybdenum artificial joint castings are produced by investment casting techniques. Investment casting is also known as "lost wax casting". Wax is injected into a metal(usually aluminum) mold to form a wax pattern. The pattern can also be produced by 3D printing from resin. This can create high-quality surface and high dimensional accuracy for complex-structured products which requires minimal machining and welding.
Cobalt-chromium molybdenum Knee Castings are a high-performance medical alloy material for knee replacement. The casting consists of three metal elements, cobalt, chromium and molybdenum. It is made through a precision casting process to ensure its excellent mechanical properties and biocompatibility, which can effectively replace the natural knee joint and restore the patient's mobility. 
Artificial Joints Casting Specifications:
| Standard | ASTM F75-12, ISO, AMS, JIS, DIN |
| Material | CoCrMo |
| Weight | 0.001~100kg |
| Process | Vacuum Casting |
| Machining Tolerance | +/-0.15mm |
| Surface Roughness | Ra3.2 ~ 6.3 |
| Min. Casting Wall Thickness | 0.5mm |
| Max. Casting Size | Dia 1200mm X 800mm |
| Heat Treatment | Solid Solution Treatment |
| Application | Knee joint prosthesis implant |
Cobalt Chromium Molybdenum Casting Features:
Uniform grain size
High purity of materials
No metallurgical casting defects
Superior strength
Excellent wear resistance
High fatigue resistance
Optimal elasticity
Excellent biocompatibility
Applicable groups:
Patients with osteoarthritis
Patients with rheumatoid arthritis
Patients with joint trauma
Patients with other degenerative diseases or injuries
Patients with other joint diseases
Why Buy Medical Implant Castings from Us?
There are several reasons why you should buy orthopedic implant castings from us. The following are just some of the benefits that you get when you choose us as your medical implant castings manufacturer:
We have a proven track record of manufacturing medical implants for the knee and shoulder orthopedic markets with Grade A integrity.
We have extensive experience casting, heat treating and processing CoCrMo.
We can manufacture orthopedic implant castings with tight dimensional tolerances.
We manufacture high-quality, high-volume products with consistent quality.
Applications of Cobalt Chromium Molybdenum Casting
Orthopedic Surgery:
Knee Replacement: Used to replace damaged or degenerated natural knee joints, restore the patient's knee function and quality of life.
Repair Surgery: Suitable for the repair and replacement of knee prostheses to improve the patient's postoperative recovery effect.
Medical Devices:
Joint Prosthesis: As a high-performance knee prosthesis material, it is widely used in various joint replacement surgeries.
Other Orthopedic Implants: Implants such as hip joints and shoulder joints are widely used due to their superior performance.
Cobalt-chromium-molybdenum knee castings, with their excellent mechanical properties and biocompatibility, provide a reliable solution for orthopedic surgery, helping patients regain freedom of movement and improve their quality of life.
Chemical Composition
ASTM 75-12 Chemical Composition:
| Element | Composition, % (Mass/Mass) | |
| min | max | |
| Chromium | 27.00 | 30.00 |
| Molybdenum | 5.00 | 7.00 |
| Nickel | ... | 0.50 |
| Iron | ... | 0.75 |
| Carbon | ... | 0.35 |
| Silicon | ... | 1.00 |
| Manganese | ... | 1.00 |
| Tungsten | ... | 0.20 |
| Phosphorous | ... | 0.020 |
| Sulfur | ... | 0.010 |
| Nitrogen | ... | 0.25 |
| Aluminum | ... | 0.10 |
| Titanium | ... | 0.10 |
| Boron | ... | 0.010 |
| Cobalt | balance | balance |
Product Analysis Tolerances
ASTM 75-12 Product Analysis Tolerances:
| Element | Tolerance Under the Minimum or Over the Maximum Limit, % (Mass/Mass)C |
| Chromium | 0.30 |
| Molybdenum | 0.15 |
| Nickel | 0.05 |
| Iron | 0.03 |
| Carbon | 0.02 |
| Silicon | 0.05 |
| Manganese | 0.03 |
| Tungsten | 0.04 |
| Phosphorous | 0.005 |
| Sulfur | 0.003 |
| Nitrogen | 0.02 |
| Aluminum | 0.02 |
| Titanium | 0.02 |
| Boron | 0.002 |
Mechanical properties:
| Sample Number | Test Conditions | Test Results | Remarks | |||
| Rp0.2(MPa) | Rm(MPa) | A(%) | Z(%) | |||
| Standard requirement | / | 450 | 665 | 8 | 8 | / |
| 1# | / | 582 | 871 | 13.5 | 19 | 2 |
| 2# | / | 586 | 879 | 14 | 19 | 2 |
| 3# | 605 | 917 | 15.5 | 19 | 2 | |
| 3# | 592 | 900 | 13.5 | 18 | 2 | |
Artificial Joints Casting Production Process:
Wax Model Preparation→Shell Preparation→Shell Sintering→Melting and Pouring→Non-Destructive Testing→Vacuum Quenching→Dimensional Inspection→Packaging→Delivery
 |  |  |
| Titanium Bar/Rod | Titanium Wire | Titanium Disc |
 |  |  |
| Titanium Ingot | Nitinol/Nickel Titanium | Artificial Joint Castings |
Q: Are you a direct manufacturer or trading company?
A: We're a manufacturer with more than 18 years of professional production experience.
Q: Do you offer free samples?
A: Usually, our sample is free but we need our customer to pay the freight.
Q: What is the minimum quantity per order?
A: 1 kg. For regular standard medical and aerospace materials, based on our production capacity of 20 tons per month for titanium wire and rods. the stock inventory could meet all your requirements.
Q: What products can you offer?
A: We specialize in the production of pure titanium, titanium alloy, titanium rods, wires, discs, nitinol alloy, etc.,
Q: What's the payment term?
A: When we quote for you, we will confirm with you the way of transaction, FOB, CIF, CNF, etc.
For mass-production goods, you need to pay 30% deposit before producing and 70% balance against a copy of documents. The common way is by T/T. L/C is also acceptable.
Q: What applications do your products relate to?
A: Our titanium alloys and nitinol alloys are widely used in medical, aerospace, and other Industries.
Q: How can we get your price?
A: We need the below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
Q: Can you do customized products?
A: Yes, we support customized products according to the customers' drawings or samples.
Q: How do you guarantee the quality of your goods?
A: We ensure quality by inspecting every process and using advanced testing equipment to conduct comprehensive checks, ensuring finished products meet customer and international standards.
Q: How do you deliver the goods to us?
A: We will usually ship the goods by sea and air according to your requirements.
