A Closer Look at the Chemical Composition and Mechanical Properties of C15 Steel Grade

C15 is a carbon steel grade that belongs to the European standard EN 10083. It is commonly used in the manufacturing of machine components, such as gears, sprockets, and shafts, due to its good combination of mechanical properties and affordability.

Chemical Composition:
The chemical composition of C15 steel grade is as follows:

– Carbon (C): 0.12 – 0.18%
– Silicon (Si): 0.15 – 0.35%
– Manganese (Mn): 0.3 – 0.6%
– Phosphorus (P): Max 0.035%
– Sulfur (S): Max 0.035%

These chemical elements contribute to the overall properties of the steel grade, such as its strength, hardness, and ductility.

Mechanical Properties:
The mechanical properties of C15 steel grade are:

– Tensile Strength: 430 – 580 MPa
– Yield Strength (depending on thickness): 240 – 340 MPa
– Elongation (after fracture): 14 – 20%
– Reduction in Area: 30 – 40%
– Hardness (HB): 131 – 163

These mechanical properties make C15 suitable for applications where moderate strength and toughness are required. It exhibits good machinability and can be easily welded.

C15 steel is typically supplied in the normalized or as-rolled condition. Normalizing involves heating the steel to a temperature above its critical transformation range and then air-cooling it. This process improves the mechanical properties and uniformity of the steel.

It is important to note that these values may vary slightly depending on the manufacturing process and supplier. Therefore, it is recommended to refer to the specific technical datasheet or contact the manufacturer for precise information on the chemical composition and mechanical properties of C15 steel grade.
C15 Steel grade
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