SCr420 is a JIS standard low alloy chromium steel

SCr420 is a JIS standard low alloy chromium steel
SCr420 (SCr22) has moderate yield strength and tensile strength and is suitable for applications with general strength requirements. SCr420 has good toughness and impact resistance, allowing it to maintain reliability in applications subject to shock and vibration. SCr420 has certain wear resistance and is suitable for some parts and components that require wear resistance. SCr420 has good weldability and is easy to weld and assemble.

SCr420 uses:

Mechanical parts manufacturing: SCr420 is often used to manufacture mechanical parts with general strength requirements, such as bearings, gears, cams, connecting rods, etc.

Automobile industry: SCr420 is used in some parts of automobiles and motorcycles, such as gears, bearing rings, tapered roller bearings, etc., to meet strength and wear requirements.

Engineering machinery: SCr420 can be used to manufacture key components of engineering machinery, such as track sprockets, pins, excavator gears, etc.

SCr420 heat treatment methods include normalizing and tempering.

Normalizing: The SCr420 is heated to the appropriate temperature (usually between 830°C and 860°C), maintained for a period of time, and then cooled in the air. Normalizing increases the hardness and strength of steel.

Tempering: The normalized SCr420 is heated to an appropriate temperature (usually between 150°C and 200°C), maintained for a period of time and then cooled at an appropriate rate. Tempering can reduce the internal stress of steel and improve its toughness and impact resistance.