S50C - Heat Treatment

S50C is a high-quality carbon steel with excellent weldability and machinability. It is commonly used in the manufacturing of various tools, such as knife blades, gears, and shafts. The proper heat treatment process is crucial for achieving the desired mechanical properties and performance of S50C.

The heat treatment process involves heating the steel to a specific temperature, holding it at that temperature for a prescribed period, and then cooling it at a controlled rate. The aim of heat treatment is to improve the steel's hardness, toughness, wear resistance, and dimensional stability.

The first step in the heat treatment process for S50C is preheating. This step ensures that the steel is evenly heated and prevents cracking and distortion during heating. The preheating temperature is typically between 400 and 600°C for S50C.

Next, the steel is heated to the austenitizing temperature, which is around 780-820°C. At this temperature, the steel transforms into an austenitic structure, which makes it easier to harden. The steel is held at this temperature for a specific period, depending on the thickness and composition of the steel.

After the heating process, the steel is cooled rapidly using a quenching medium, such as water, oil, or air. The cooling rate should be controlled to achieve the desired microstructure and properties. A fast cooling rate results in a harder and more brittle material, while a slower rate produces a softer and more ductile material.

Finally, the steel undergoes tempering, which involves heating it to a lower temperature between 150 and 650°C. Tempering improves the steel's toughness, ductility, and impact resistance by reducing internal stresses and removing excess hardness.

Product Specification

• Chemical composition:  includes elements such as carbon, silicon, manganese and phosphorus, ensuring the high strength and wear resistance of the material.
• Physical properties: good heat treatment performance and weldability, which can meet the needs of different processing and manufacturing.
• Surface treatment: rough surface treatment, bright surface treatment, hot dip galvanized treatment and other surface treatment methods to meet the needs of different applications.
• Implementation standards:implements international standards including JIS G4051, ASTM A29/A29M, DIN EN 10083-2, etc., in line with international quality standards.
• Application: widely used in mechanical parts, tools, bearings, vibrators, molds and other fields, is a high-quality material choice.

Carbon steel 1050 Chemical Composition
Chemical Composition (wt%) limits of AISI 1050 carbon steel per ASTM A684*

Steel 1050 Mechanical Properties