cold-rolled coil
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With its unique cobalt-based composition and excellent performance characteristics, 3J21 has occupied a place in the fields of aviation, aerospace, precision instrument manufacturing and other fields. As a high-performance cobalt-based alloy, 3J21 has become one of the indispensable materials in modern industry due to its excellent elasticity, corrosion resistance, high temperature stability and non-magnetic properties.
CHEMICAL COMPONENT
| Element | C | Mn | Si | P | S | Cr | Ni | Co | Mo | Be | Fe |
| % | ≥0.15 | 1.5-2.5 | ≥1.2 | ≥0.015 | ≥0.015 | 19-21 | 14-16 | 39-41 | 6-8 | ≥0.1 | Bal |
PHYSICAL&MECHANICAL PROPERTIES
| Density | Melting | Elongation | Tensile strength | Yield strength |
| 8.3 g/cm³ | 1427°C | 5-30% | 970 MPa | 480 MPa |
CHARACTERISTIC
1. Non-magnetic: This makes 3J21 alloy very useful in magnetically sensitive applications, such as magnetic sensors, magnetic shielding and other fields.
2. Corrosion resistance: In a variety of media, 3J21 alloy has shown strong corrosion resistance, can effectively resist oxidation, vulcanization and other chemical corrosion.
3. High elasticity and fatigue resistance: suitable for components requiring repeated deformation, such as elastic components, precision instruments, etc.
APPLICATION AREA
1. Precise instrument
2. Aerospace vehicle:Engine blades, bearings, etc.
3. Magnetic sensor
4. Chemical and petroleum industries:Manufacture corrosion-resistant equipment and pipes that resist chemical corrosion and high temperature environments.
5. Medical device field:Such as artificial joints, implanted devices, etc., need materials with good biocompatibility and corrosion resistance.
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