CF9SMnPb36 is a low carbon free-cutting steel grade that is commonly used for the production of machine parts and components. It is known for its enhanced efficiency and durability due to its specific mechanical properties and chemical composition.

Mechanical Properties:

1. Tensile Strength: CF9SMnPb36 has a high tensile strength of approximately 600- 800 MPa, which makes it suitable for applications requiring strong and durable machine parts.

2. Yield Strength: The yield strength of CF9SMnPb36 is around 400-600 MPa, indicating its ability to withstand heavy loads and stress without permanent deformation.

3. Elongation: CF9SMnPb36 exhibits a high elongation of approximately 20-25%, which means it can undergo plastic deformation before fracturing, allowing for greater flexibility and resistance to breakage.

4. Hardness: CF9SMnPb36 has a hardness range of 180-250 HB, providing good wear resistance and improving the durability of components.

Chemical Composition:

– Carbon (C): CF9SMnPb36 steel grade contains a low carbon content ranging from 0.06-0.14%. This low carbon content contributes to its enhanced machinability.

– Silicon (Si): The silicon content in CF9SMnPb36 is usually kept below 0.40%, as it can enhance the steel’s strength and hardness.

– Manganese (Mn): CF9SMnPb36 steel contains manganese in the range of 1.10-1.50%. Manganese improves the hardenability and strength of the steel, contributing to its durability.

– Phosphorus (P) and Sulfur (S): These elements are added in small amounts to improve machinability. CF9SMnPb36 typically contains phosphorus up to 0.35% and sulfur up to 0.40%. The combination of these elements aids in the formation of free-machining chips during the machining process.

– Lead (Pb): The addition of lead improves the machinability of CF9SMnPb36 by promoting the formation of finely-divided chips during machining.

Overall, CF9SMnPb36 steel grade offers enhanced efficiency and durability due to its high tensile strength, yield strength, elongation, and hardness. Its chemical composition, including low carbon content, controlled levels of silicon, manganese, phosphorus, and sulfur, along with the addition of lead, contributes to its excellent machinability and long-lasting performance.
CF9SMnPb36 Steel grade