3J21 corresponding grade:3J240, CO40NiCRMO (China), UNS R30003, Elgiloy, NAS604PH (USA), Nivaflex (Germany), NAS604PH (Japan), Phynox (France), K40HXM, 40KHxm (Russia).
3J21 Technical Standard:yb/t 5253-2011，astm f1058 grade1，ams5833，ams5834，ams5876
3J21 Supply form:Rods, strips, wires.
Alloy 3J21 is a highly elastic alloy composed mainly of iron (Fe), nickel (Ni) and cobalt (Co). Its chemical composition is as follows:
Iron (Fe): about 49-53%.
Nickel (Ni): about 28-32%.
Cobalt (CO): about 16-18%.
3J21 alloy has the following characteristics and physical properties:
1. High modulus of elasticity: 3J21 alloy has a high modulus of elasticity, which can quickly return to its original state after being stressed, and is not easy to produce permanent deformation. As a result, it is often used in applications that require high elasticity and resilience.
2. Low coefficient of thermal expansion: 3J21 alloy has a low coefficient of thermal expansion and can maintain a relatively stable size under temperature changes. This makes it advantageous in applications that require resistance to thermal expansion.
3. Good corrosion resistance: 3J21 alloy has good corrosion resistance, and has good resistance to most acidic media and some corrosive gases.
4. Moderate magnetism: 3J21 alloy has moderate magnetism and has a certain permeability. This makes it widely used in applications that require magnetic properties, such as magnetics and sensors.
In general, 3J21 alloy has high elasticity, low thermal expansion, good corrosion resistance and moderate magnetic properties, which makes it widely used in precision instruments, measuring equipment, springs, magnetic components and other fields.
3J21 alloy has excellent performance in terms of mechanical properties. Here is some important information about the mechanical properties of alloy 3J21::
1. Modulus of elasticity: 3J21 alloy has a high modulus of elasticity, usually between 180-190 GPA. The high modulus of elasticity means that the alloy retains good shape stability when subjected to forces.
2. Yield strength: The yield strength of 3J21 alloy is usually between 400-600 MPa, and it has good tensile properties. This makes it ideal for applications that need to be subjected to large loads or stresses.
3. Elongation: The elongation of 3J21 alloy is generally between 15-25% and has good plasticity. This means that it can be plastically deformed within a certain range and is suitable for applications that require molding or bending.
4. Hardness: 3J21 alloy has a moderate hardness, usually between 200-250 HB. This makes it resistant to a certain degree of wear and deformation.
It should be noted that the mechanical properties of 3J21 alloy may be affected by different processing processes, so in specific applications, it is also necessary to select and evaluate according to the actual situation.
Alloy 3J21 has the following main characteristics:
1. High modulus of elasticity: 3J21 alloy has a high modulus of elasticity, usually between 180-190 GPA. This means that it can maintain good shape stability when subjected to force and is not prone to plastic deformation.
2. Low coefficient of thermal expansion: 3J21 alloy has a low coefficient of thermal expansion, which means that it expands less when the temperature changes. This makes it useful in applications where dimensional stability is required, such as precision instruments and measuring equipment.
3. Good corrosion resistance: 3J21 alloy has excellent corrosion resistance and can maintain good corrosion resistance in various corrosive media. This makes it widely used in corrosion-resistant environments, such as the chemical industry and marine engineering.
4. Moderate magnetism: 3J21 alloy has moderate magnetism and can respond to external magnetic fields to a certain extent. This gives it a certain potential for applications in areas such as magnetics, sensors, and motors.
In summary, 3J21 alloy has the characteristics of high elastic modulus, low coefficient of thermal expansion, good corrosion resistance and moderate magnetism, which makes it widely used in precision instruments, measuring equipment, springs, magnetic components and other fields.