Description
Premium ASTM F75 Cobalt Alloy Bar – Reliable CoCrMo Rod for Medical & Industrial Applications
⭐ Introduction
The ASTM F75 Cobalt Alloy Bar is a premium-grade cobalt-based alloy widely recognized for its strength, reliability, and exceptional performance across medical and industrial sectors. Often referred to as a CoCrMo Rod, it is a specialized material formulated to withstand extreme conditions, resist wear and corrosion, and integrate safely into human biological systems.
Unlike conventional stainless steels, the Cobalt Chrome Molybdenum Bar offers unparalleled durability. Its unique balance of chromium, molybdenum, and cobalt ensures that the F75 Cobalt Alloy Bar maintains mechanical stability and surface integrity under both high-stress mechanical loads and complex chemical environments.
⚙️ Chemical Composition
The chemical makeup of ASTM F75 Cobalt Alloy Bar is key to its performance:
| Element | Content (wt%) |
|---|---|
| Cobalt (Co) | Balance |
| Chromium (Cr) | 27.0 – 30.0 |
| Molybdenum (Mo) | 5.0 – 7.0 |
| Carbon (C) | ≤ 0.35 |
| Nickel (Ni) | ≤ 1.0 |
| Iron (Fe) | ≤ 0.75 |
| Silicon (Si) | ≤ 1.0 |
| Manganese (Mn) | ≤ 1.0 |
💡 The high chromium content boosts corrosion resistance, molybdenum enhances strength and hardness, and cobalt provides the alloy with long-term structural stability. The alloy composition of ASTM F75 Cobalt Alloy Bar strictly follows international standards, ensuring consistent chemical balance and biocompatibility.
👉 Reference: ASTM F75 Standard Specification
📊 Mechanical Properties
The performance of the ASTM F75 Cobalt Alloy Bar is highlighted by its outstanding mechanical profile:
| Property | Value |
|---|---|
| Density | ~8.3 g/cm³ |
| Tensile Strength | ≥ 655 MPa |
| Yield Strength | ≥ 450 MPa |
| Elongation | ≥ 8% |
| Hardness | 25 – 35 HRC |
| Elastic Modulus | ~210 GPa |
These numbers explain why CoCrMo Rods are favored in orthopedic implants, aerospace turbines, and industrial valves — they provide a combination of strength and resilience unmatched by common steels.
🛡 Key Advantages
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⭐ Strength and Toughness – The ASTM F75 Cobalt Alloy Bar supports long-term use in implants and high-stress machinery.
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🛡 Wear Resistance – Extends the lifespan of artificial joints and friction-heavy parts.
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⚙️ Corrosion Protection – Performs reliably in saline environments and body fluids.
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🏥 Biocompatibility – The Cobalt Chrome Molybdenum Bar is safe for use in direct contact with human tissues.
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🔧 Manufacturing Flexibility – Available in forged, hot-rolled, and precision-machined formats.
🏥 Medical Applications
The healthcare industry is the primary domain of the F75 Cobalt Alloy Bar:
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Hip and knee joint implants
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Trauma fixation devices (plates, screws, rods)
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Dental crowns, bridges, and partial dentures
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High-strength surgical tools
💡 Surgeons rely on the ASTM F75 Cobalt Alloy Bar for its ability to integrate with human bone, resist wear inside joints, and reduce the risk of rejection. The CoCrMo Rod is widely recognized in the medical field for hip and knee implants, dental prosthetics, and surgical tools.
👉 More details: NIH – Cobalt-Chromium Alloys in Medicine
✈️ Aerospace and Energy Applications
The CoCrMo Rod is also critical in aerospace and power generation:
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Turbine blades capable of enduring high thermal stress
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Bearings and bushings in extreme load environments
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Pump impellers and valve seats in corrosive fluid systems
👉 In these sectors, the Cobalt Chrome Molybdenum Bar ensures long-term operational stability, even under demanding conditions.
⚖️ Alloy Comparisons
| Alloy | Tensile Strength | Corrosion Resistance | Biocompatibility | Applications |
|---|---|---|---|---|
| ASTM F75 CoCrMo Bar | High | Excellent | Excellent | Implants, aerospace |
| 316L Stainless Steel | Medium | Good | Moderate | Surgical instruments |
| Ti-6Al-4V (Grade 5) | High | Excellent | Excellent | Aerospace, implants |
| Hastelloy C-276 | High | Excellent | Not Biocompatible | Chemical processing |
📊 Clearly, the F75 Cobalt Alloy Bar offers a rare combination of medical-grade biocompatibility and industrial-level durability.
🔧 Processing and Fabrication
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Forging & Rolling: Enhances density and refines grain structure.
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Heat Treatment: Increases hardness and tensile strength.
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Machining: Carbide tooling recommended for precision shaping of CoCrMo Rods.
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Surface Options: Polished, turned, or ground, depending on customer requirements.
🏭 Quality Standards & Certification
All ASTM F75 Cobalt Alloy Bars meet rigorous international standards:
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ASTM F75
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ISO 5832-4
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EN 10204 3.1 / 3.2 Certification available
Each order is accompanied by mill test reports, mechanical property charts, and chemical composition certifications.
📦 Supply Range
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Diameter: 5 mm – 200 mm
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Length: 100 mm – 3000 mm
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Condition: Forged, hot-rolled, or precision-machined
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Surface: Bright polished, ground, or custom finished
🌍 Why Choose Us?
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⭐ Proven expertise in cobalt alloys
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🛡 Compliance with global standards
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⚙️ Tailor-made sizes and finishes
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📊 Competitive pricing and fast logistics
📌 Conclusion
The ASTM F75 Cobalt Alloy Bar is not just another alloy. It is a trusted CoCrMo Rod with a proven track record in medicine, aerospace, and industry. Its unique blend of biocompatibility, wear resistance, and corrosion protection makes it indispensable in fields where reliability is paramount.
Whether as a surgical implant, a turbine blade, or a valve component, the F75 Cobalt Alloy Bar ensures safety, performance, and long-term stability.
📞 Contact Us
📧 Email: sales@niticu.com
📞 Phone / WhatsApp / WeChat: +86 13335373172
📲 WhatsApp Direct Link: Click here to chat
🏭 Factory: Baotai Road Industrial Park, High-tech Zone, Baoji City, Shaanxi, China
🌐 Website: https://niticu.com
📩 Contact us today for pricing, samples, and technical support — we respond within 24 hours.
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