Its tensile strength is as high as 355MPa, and its yield strength also reaches the corresponding standard, which makes Q355B steel plate have better strength and stability under large loads and complex working conditions. At the same time, Q355B steel plate also has good toughness and impact resistance, and can maintain stable performance in harsh environments.
Because they are produced by cold rolling process, the surface quality of these steel coils is good. For example, the surface of cold rolled coils is smooth and free of iron oxide scale, which can meet some application scenarios with high requirements on surface quality, such as ensuring the appearance of the coils when used in home appliance manufacturing.
The surface quality of hot rolled steel strip is one of its important characteristics. The standard specifies the allowable number and type of various surface defects to ensure that the surface quality of the strip meets the requirements, thereby reducing problems during processing and improving product quality.
Q235B/Q355B steel strip is a carbon structural steel with excellent weldability, plasticity and toughness, and is widely used in construction, rail transportation, mechanical equipment and other fields. Its characteristics: strength and mechanical properties, corrosion resistance, machinability and weldability.
SS400: Its lower limit tensile strength is 400MPa, which is suitable for a variety of architectural and engineering structures. This material shows good tensile strength and plastic deformation ability during stretching. SS490: It has higher tensile strength and is suitable for structures that require higher strength and durability. SS540: It has higher tensile strength and is suitable for projects with extremely high strength requirements.
Under most environmental conditions, Q235B I beam exhibits good corrosion resistance and can resist a certain degree of oxidation and corrosion, extending the service life and safety of steel. However, in corrosive media such as strong acids and alkalis, corresponding protective measures need to be taken.
