Wear & Corrosion Resistance
Excellent resistance to abrasion, galling, cavitation, and erosion.
PRODUCTS
Our Cobalt-Based Alloys Product Range
Browse our diverse catalog of Cobalt-Based Alloys, available in various forms and specifications to meet your engineering demands.
Characteristic
Key Advantages of QHBD Cobalt-Based Alloys
Our cobalt-based alloys are engineered for exceptional performance, combining high strength with resistance to extreme conditions.
Common Alloys
Cobalt-based Alloys: Common Alloy Materials
Stellite Series
Exceptional wear resistance, represented by Stellite 6 and Stellite 21, used for hardfacing treatment of valves and pump parts.
Haynes Series
Boasting prominent high-temperature strength, including Haynes 25 and Haynes 188, widely adopted in aerospace core components.
CoCrMo Alloy
Specially developed for orthopedic implants such as hip and knee joint prostheses.
Other Grades
Alacrite, Havar, Megallium, Permendur and other functional cobalt-based alloys.
APPLICAITON
Where Cobalt-Based Alloys Excel: Industrial Applications
Discover how our cobalt-based alloys power innovations across diverse sectors, from aviation to healthcare.
FAQs
Cobalt-Based Alloys FAQs
Cobalt-based alloys are widely used in high-temperature, high-wear, and corrosive environments such as aerospace, medical implants, gas turbines, and industrial tooling. Below are the most frequently asked questions to help you better understand their properties, applications, and performance.
What are cobalt-based alloys?
Cobalt-based alloys are metal materials primarily composed of cobalt, combined with elements such as chromium, tungsten, nickel, and carbon. These additions enhance hardness, wear resistance, corrosion resistance, and high-temperature strength.
What are the main advantages of cobalt-based alloys?
Key advantages include:
Excellent wear and abrasion resistance
Strong corrosion and oxidation resistance
High-temperature stability
Good fatigue strength
Long service life in harsh environments
Excellent wear and abrasion resistance
Strong corrosion and oxidation resistance
High-temperature stability
Good fatigue strength
Long service life in harsh environments
Are cobalt-based alloys corrosion resistant?
Yes. They perform well in many corrosive environments, especially when chromium is present in higher proportions. However, performance can vary depending on the specific alloy grade and exposure conditions (acidic, saline, or oxidizing environments).
Are cobalt-based alloys suitable for medical use?
Yes. Certain cobalt-chromium alloys are biocompatible and widely used in orthopedic implants and dental applications because of their strength, corrosion resistance, and wear durability inside the human body.
Why are cobalt-based alloys used in high-temperature applications?
Cobalt alloys maintain mechanical strength and oxidation resistance at elevated temperatures. Unlike many steels, they do not rapidly lose hardness or deform under thermal stress, making them ideal for turbine blades, furnace components, and engine parts.
How do cobalt-based alloys compare to nickel-based alloys?
Cobalt-based alloys generally offer better wear resistance and thermal fatigue resistance, while nickel-based alloys often provide superior creep resistance at extreme temperatures. The choice depends on whether wear or creep is the dominant failure mode in the application.
Can cobalt-based alloys be machined easily?
They are considered difficult to machine due to their high hardness and work-hardening behavior. Specialized tooling such as carbide or ceramic cutting tools is typically required, along with controlled cutting parameters.
What factors affect the performance of cobalt-based alloys?
Performance depends on:
Alloy composition (Cr, W, Ni content)
Heat treatment process
Operating temperature and environment
Mechanical stress and wear conditions
Surface finishing quality
Alloy composition (Cr, W, Ni content)
Heat treatment process
Operating temperature and environment
Mechanical stress and wear conditions
Surface finishing quality
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