3J21 Cobalt Based Alloy
3J21 Cobalt Based Alloy
Physical and Mechanical Properties
Product Form and Standard Specification
Inquiry
3J21 is a high-performance cobalt-based alloy, distinguishing itself with a unique composition and exceptional performance characteristics, making it essential in aviation, aerospace, precision instrument manufacturing, and other demanding fields. Renowned for its superior elasticity, corrosion resistance, high-temperature stability, and non-magnetic properties, 3J21 is an indispensable material in modern industrial applications.
Features
- Non-magnetic performance: Ideal for magnetically sensitive environments, 3J21 alloy is frequently used in magnetic sensors, magnetic shielding, and precision instruments where magnetic interference must be avoided.
- Excellent corrosion resistance: The alloy resists oxidation, vulcanization, and chemical corrosion across a variety of media, making it suitable for chemically aggressive environments.
- High elasticity and fatigue resistance: 3J21 alloy maintains mechanical stability under repeated deformation, making it suitable for elastic elements and high-precision components.
Application
- Precision instruments: Used in components such as tension wires and spiral springs requiring high elasticity, precision, and long-term stability.
- Aerospace and aviation: Applied in engine blades, precision bearings, and elastic structural components with high-temperature and fatigue resistance.
- Magnetic sensors and shielding: The alloy’s non-magnetic nature and material sensitivity make it ideal for sensor components in magnetic detection systems.
- Chemical and petrochemical industries: Suitable for producing corrosion-resistant pipelines and equipment that must operate in harsh chemical or high-temperature environments.
- Medical devices: Used in applications such as artificial joints and implantable medical components, where biocompatibility and corrosion resistance are essential.
Chemical compositions
Element |
Min. % |
Max. % |
C |
- |
0.15 |
Mn |
1.5 |
2.5 |
Si |
- |
1.2 |
P |
- |
0.015 |
S |
- |
0.015 |
Cr |
19 |
21 |
Ni |
14 |
16 |
Co |
39 |
41 |
Mo |
6 |
8 |
Be |
- |
0.1 |
Fe |
- |
Bal |