Carbon Structural Steel

Description

Carbon structural steel is a kind of carbon steel. The carbon content is about 0.05% to 0.70%, and individual can be as high as 0.90%. Which has many uses and a large amount, it is mainly used in railways, bridges and various construction engineering. This material is used to manufacture different metal components that bear static loads, as well as machine elements and general welded parts that do not require hest treatment.

Grade

This kind of steel mainly guarantees mechanical properties, so its grades also reflect mechanical properties. It is generally represented by Q and numbers, where Q means yield point and the numbers signify numerical value of the yield point. Carbon structural steel is divided into 5 grades according to the yield strength of steel: Q195, Q215, Q235, Q255, Q275, each grade is divided into classes A, B, C, D in accordance with different quality. In these grades, S,P content decrease in order, and the steel quality increases in sequence. There are four at most and one at least. In addition, there are differences in the deoxidation method of steel smelting. The symbol of deoxidation method: F--rimmed steel, b—semi killed steel, Z--killed steel, TZ—special killed steel.

For example, Q235-A•F signifies the A class rimmed steel that deoxidation is 235Mpa. Normally, Q235-C means the C class killed steel or special killed steel that deoxidation is 235Mpa.

Mass Fraction

Carbon structural steel is generally not subjected to heat treatment, but is directly used in the supply state. Usually Q195, Q215 and Q235 carbon structural steels have low mass fraction, good welding performance, good plasticity, toughness and certain strength. They are often rolled into thin plate, steel bar, welded steel pipe, etc., used for bridges, buildings and other structures and general manufacturing parts such as screws and nuts. Q255 and Q275 carbon structural steels have slightly higher mass fraction and strength, better plasticity and toughness, as well as can be welded. They are usually rolled into structural steels, bars and steel sheet as structural parts, and are used to manufacture connecting rods, gears, couplings, pins and other parts of simple machines. 

Need any metal, please email us or add whatsapp to communicate directly.

Jessica Hu

Email: ceo@eoexport.com

WhatsApp: +86 15524105871