JIS G4304/4312 SUS 420J2 is a martensitic stainless steel with high strength, high hardness and excellent corrosion resistance. This stainless steel material is widely used in the manufacture of components and products that require high hardness, high wear resistance and good corrosion resistance.
JIS G4304/4312 SUS 420J2 Stainless steel Features:
High strength and hardness: Because 420J2 is a martensitic stainless steel, its yield strength and tensile strength are higher than ordinary steel, high hardness, not easy to deformation, so it is very suitable for manufacturing parts and products requiring high precision and high hardness.
Excellent corrosion resistance: Although its high carbon content makes it less corrosion-resistant than austenitic stainless steel in some acidic or alkaline environments, it still shows good corrosion resistance in general environments, such as atmosphere, water and steam, especially suitable for Marine environments.
Excellent processing performance: This material shows good processing performance in casting, welding, cutting, bending and straightening processes, and is not easy to crack and deformation, which can ensure processing quality and accuracy.
JIS G4304/4312 SUS 420J2 Stainless steel is mainly composed of iron (Fe), carbon (C), chromium (Cr) and a small number of other metallic elements. Its specific chemical composition is roughly as follows:
Iron: Margin
Carbon: 0.16%~0.25%
Chromium: 12%~14%
Manganese: Up to 1%
Silicon: up to 1%
Phosphorus: Up to 0.04%
Sulfur: Up to 0.03%
The precise ratio of these elements ensures that 420J2 stainless steel has excellent mechanical properties and corrosion resistance.
JIS G4304/4312 SUS 420J2 stainless steel has excellent mechanical properties, its tensile strength ≥520MPa, yield strength ≥275MPa, elongation ≥14%, hardness ≤241HB. These performance parameters make it an ideal material for applications such as tooling, high-hardness parts, and medical devices.
Due to its excellent properties, JIS G4304/4312 SUS 420J2 stainless steel is widely used in many fields. It is often used to make sharp tools such as blades, blades, saw blades, and is also used to make high-hardness parts, such as bearings, gears, piston rings, and so on. In addition, due to its good corrosion resistance and biocompatibility, it is also widely used in the manufacture of medical devices and surgical instruments. JIS G4304/4312 SUS 420J2 stainless steel also plays an important role in high-precision and demanding fields such as aerospace and nuclear equipment.
