High-carbon steel is a steel with long tempering time and high carbon content, the main use of general bearings, tools, rails, steel frame mold (used to shape the steel) and steel doors, etc..

It can be classified as.

Ultra-high carbon high carbon steel A steel with a slightly longer tempering time than high carbon steel, mainly used for general construction steel bricks. Low High Carbon Steel Steel with a slightly shorter tempering time than high carbon steel (not medium carbon steel), mainly used for the manufacture of metal pipes.

Carbon steel is an iron-carbon alloy material, with carbon content of 0.0218%~2.11%. Generally also contains a small amount of silicon, manganese, sulfur and phosphorus. Generally, the higher the carbon content in carbon steel, the greater the hardness and strength, but the plasticity is lower.