Properties of Q235B Mold Steel Plates

　　Keywords: Q235B mold steel plate, Q235B steel price, Q235B carbon steel

　　Q235B Material Properties

　　Q235B Mold Steel Plates have a certain elongation, strength, good toughness and castability, easy to stamp and weld, and is widely used in the manufacture of general mechanical parts. It is mainly used for welded structural parts with high quality requirements in construction and bridge engineering.

　　The two digits at the beginning of the steel number indicate the carbon content of the steel, expressed as a few tenths of the average carbon content. For example, steel with an average carbon content of 0.45%, the steel number is “45”, which is not a sequence number, so it cannot be read as 45 steel.

　　2 High-quality carbon structural steel with high manganese content should be marked with manganese, such as 50Mn.

　　3 Boiling steel, semi-killed steel and special-purpose high-quality carbon structural steel shall be specially marked at the end of the steel number, for example, semi-killed steel with an average carbon content of 0.1%, and its steel number is 10b.

　　4 high quality carbon structural steel is supplied according to chemical composition and mechanical properties. The content of sulfur, phosphorus and non-metallic inclusions in the steel is small, indicating that the quality and uniformity of the structure are good, and it is often used for various important mechanical structural parts that require heat treatment.

　　5 According to different chemical compositions, high-quality carbon structural steel is divided into two types: ordinary manganese-containing steel and higher manganese-containing steel.

　　Carbon Tool Steel

　　1 steel is crowned with “T” to avoid mixing with other steels.

　　The number in the 2 steel number indicates the carbon content, expressed as a few thousandths of the average carbon content. For example, "T8" means an average carbon content of 0.8%.

　　3 For those with higher manganese content, “Mn” is marked at the end of the steel number, for example “T8Mn”.

　　4 The high-quality carbon tool steel has lower phosphorus and sulfur content than ordinary high-quality carbon tool steel. The letter “A” is added to the steel number to distinguish it, for example, “T8MnA”.

　　Free Cutting Steel

　　The number after the letter "Y" indicates the carbon content, expressed as a few tenths of the average carbon content, for example, a free-cutting steel having an average carbon content of 0.3%, and its steel number is "Y30".

　　For those with higher manganese content, "Mn" is also indicated after the steel number, for example "Y40Mn".

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