Good Overall C45 Carbon Steel Surface Hardness Can Reach 55hrc Or Higher - China

The chemical composition of C45 carbon steel mainly includes the following elements:

Carbon (C): 0.42%~0.50%

Silicon (Si): ≤0.40%

Manganese (Mn): 0.50%~0.80%

Sulfur (S): ≤0.045%

Phosphorus (P): ≤0.045%

The content of other elements such as chromium (Cr), nickel (Ni), molybdenum (Mo) is usually very low or not added.

These chemical compositions make C45 carbon steel have good comprehensive properties, including good mechanical strength and machinability.

Mechanical properties of C45 carbon steel

Elongation (δ5): ≥16% (some say it varies with heat treatment process and thickness, but usually expressed as 14-17%)

Shrinkage (ψ): ≥40%

Impact energy (Akv): ≥39J

Impact toughness value (αkv): ≥49J/cm² In addition, the hardness of C45 carbon steel is ≤229HB before heat treatment and ≤197HB after annealing.

After proper heat treatment (such as quenching and tempering), its surface hardness can reach 55HRC or higher.

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• Posted By: Dongguan Songshun Mould Steel Co., Ltd.

• Phone: 076985475596

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• Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.
  
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