45# carbon structural steel

45# carbon structural steel, also known as 45# steel, is a medium-carbon high-quality carbon structural steel. Its carbon content is approximately between 0.42% and 0.50%. This characteristic gives it high strength and resistance to deformation.

45# carbon structural steel can further improve its mechanical properties and processing properties through normalizing, annealing, quenching and tempering. Among them, quenching + tempering* (quenching and tempering) treatment is a commonly used heat treatment method.

45# carbon structural steel is widely used in the field of machinery manufacturing due to its high strength, good plasticity and toughness.

Identify and purchase:

Spark identification: Observe the sparks through grinding with the grinding wheel. The white ones are medium carbon steel, such as 45# steel, and the red ones are low carbon steel, such as A3 steel.

Hardness test: 45# steel has higher hardness after heat treatment and can be initially identified through the hardness test.

Manufacturer's reputation: Choose 45# steel produced by regular manufacturers to ensure better quality.

Precautions for using 45# carbon structural steel:

45# steel has low hardenability and is not suitable for workpieces with large cross-section sizes and high requirements. When performing heat treatment, process documents must be strictly followed to ensure the quality of heat treatment. During use, care should be taken to avoid overloading and impact loads to avoid damaging the workpiece.

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