Product Overview

CoCrMo alloy is a high-end medical/industrial cobalt-based alloy developed and produced by Qinchuan New Materials (Zhengzhou) Co., Ltd. The alloy is based on cobalt, incorporating high chromium and molybdenum elements, and utilizes a low nickel controllable formula to ensure the product has no sensitization risk. The CoCrMo alloy boasts ultra-high mechanical strength, extreme wear resistance and fatigue resistance, medical-grade biocompatibility, and broad-spectrum corrosion resistance, suitable for wear-resistant and corrosive conditions at normal and medium-temperature levels. The long-term stable service temperature can reach up to 500°C, while the short-term ultimate tolerance temperature can reach 600°C, and it also features complete non-magnetic properties throughout.

Main Product Features

• High strength, fatigue resistance, wear resistance:The cobalt-chromium-molybdenum alloy, with its cobalt-based matrix and the composite reinforcement mechanism of chromium molybdenum carbides, exhibits far superior tensile strength, yield strength, and hardness compared to stainless steel, titanium alloys, and conventional nickel-based alloys, with extremely low notch sensitivity and top-notch resistance to cyclic fatigue.
• Top medical biocompatibility, non-sensitizing and non-rejecting:Low nickel/nickel-free high purity ratio, material is non-toxic and harmless, with extremely inert tissue, no human allergenicity, no rejection reaction, and resistance to corrosion by human body fluids.
• Broad-spectrum corrosion resistance and excellent high-temperature oxidation resistance:High chromium content can generate a dense and stable self-healing oxidation protective film, which boasts excellent resistance to acidic and alkaline corrosion, salt mist, body fluid corrosion, high-temperature oxidation resistance, and thermal corrosion resistance.
• Non-magnetic property, strong process adaptability:Alloys remain fully non-magnetic across the entire temperature range from room temperature to high temperature, capable of avoiding electromagnetic interference, suitable for nuclear magnetic, precise medical, and high-frequency precision equipment scenarios. Meanwhile, they exhibit excellent casting, forging, machining, and polishing properties, achieving mirror-like polishing effects.

Product Detailed Parameters

• Standard Grades: ASTM F75 (Cast), ASTM F1537 (Forged), UNS R30075, ISO 5832-4
• Nickel content: ≤1.0%
• Long-term stable service temperature: ≤500℃
• Short-term ultimate temperature tolerance: 600℃
• Magnetic-free characteristic: Entirely magnetic-free throughout

Application Scope

Cobalt-chromium-molybdenum alloys are widely used in the following fields:

• High-end medical implant devices: artificial hip, knee, and shoulder joint load-bearing prosthetics, spinal fixation pins and rods, bone plates, orthopedic implant fixation components, dental crowns, bridges, implant abutments, cardiovascular stents, and implantable precision medical devices.
• Aerospace and High-end Precision Equipment: Non-magnetic, wear-resistant components for aviation equipment, non-magnetic structural parts for precision instruments, and airborne precision friction parts.
• High-end precision industrial equipment: wear-resistant inserts for precision molds, high-temperature valve sealing surfaces, high-speed precision mechanical friction pairs, magnet-free precision instrument components, corrosion-resistant high-end tooling accessories.
• Petrochemical & Heavy Industry: High-temperature, high-pressure corrosion-resistant valves, abrasive-resistant components for medium erosion, accessories for precision anti-corrosion equipment in chemicals.
• Precision optoelectronic equipment: magnet-free precision components, high-frequency equipment anti-interference accessories, ultra-high finish precision mechanical parts.

Frequently Asked Questions (FAQ)

• Q: How is the corrosion resistance of cobalt-chromium-molybdenum alloy?

• Answer: Cobalt-chromium-molybdenum alloy boasts excellent corrosion resistance. The high chromium content can form a dense and stable self-healing oxide protective film, which has strong resistance to acid and alkali corrosion, salt spray, body fluid corrosion, high-temperature oxidation resistance, and thermal corrosion resistance.

• Q: How is the magnetic property of cobalt-chromium-molybdenum alloy?

• Answer: Cobalt-chromium-molybdenum alloy is fully non-magnetic throughout, capable of avoiding electromagnetic interference, and suitable for applications in nuclear magnetic, precision medical, and high-frequency precision equipment scenarios.

• Q: How is the machinability of cobalt-chromium-molybdenum alloy?

• Answer: Cobalt-chromium-molybdenum alloy boasts excellent casting, forging, machining, and polishing properties, enabling mirror-like polishing effects, making it suitable for manufacturing precision components with high accuracy, cleanliness, and complex structures.