What is carbon steel?
Carbon steel is one of the main materials of steel castings in the world. Carbon steel can be divided into the following categories according to the carbon content:

Mild Steel (< 0.20% C): Provides a range of tensile properties by heat treatment and can be hardened to provide high surface hardness, wear resistance and good core ductility.

Medium Carbon Steel (0.20 to 0.50% C): This composition makes it more durable, more flexible, and stronger. A range of tensile strengths is possible with good ductility and impact resistance, easy processing in softened conditions.

High Carbon Steel (>0.50% C): Strong and has good shape memory, making it a particularly useful choice for spring manufacturers. This alloy steel for high-strength applications is subject to wear and is also suitable for heavy-duty applications.

Carbon steel casting process:
Like alloy steel castings, carbon steel castings can be produced using two different casting processes: water glass casting and silica sol casting.
Water glass casting: This casting process can manufacture carbon steel castings with tolerances of CT7-CT8. Due to the low cost, most carbon steel castings adopt the water glass casting process. In China, about 70% of foundries are water glass foundries.
Silica sol casting: Another lost wax casting method for carbon steel casting. This casting process can control carbon steel castings within tolerance CT5-6. The surface finish will also be much better. The only consideration in choosing this process is its high production cost. We recommend this process if you have high requirements on carbon steel castings.

Benefits of Carbon Steel Castings
Carbon steel is a very popular cast steel material choice due to its wide variety of applications in several different industries. Due to the low cost of materials and various grades of materials, carbon steel castings are commonly used, and their strength, ductility and other properties can be improved through heat treatment, which is suitable for industrial applications. Due to its ferromagnetic properties, this material is particularly suitable for use in motors and appliances. Carbon steel is safe, durable and has a high degree of structural integrity, properties that make it popular and make it one of the most manufactured alloys in the world.