20/45/C22/C45 steel bar is a high-quality low-carbon steel, which is cold extruded, carburized and hardened steel. In the unheat-treated state, the hardness is ≤156HBS. Normalizing can promote the spheroidization of the steel, refine the large proeutectoid ferrite, and improve the cutting performance of the blank less than 160HBS.
20CrMo is an alloy structural steel containing alloy elements such as chromium (Cr) and molybdenum (Mo). Chromium can enhance the steel's oxidation resistance and corrosion resistance, while molybdenum improves its mechanical properties at high temperatures. This steel has higher strength and hardenability than carbon steel, good plasticity and toughness, good weldability, medium plasticity during cold deformation, and good cutting performance.
Q235B steel plate has high yield strength and tensile strength, with a yield strength of 235MPa and a tensile strength between 370 and 500MPa. It can withstand large loads and provide a solid structural foundation for angle steel, allowing it to withstand certain pressure and tension during use. Q235B is easy to cast and weld, which is conducive to the manufacture of angle steels of various shapes, and during the processing and assembly process, it is easy to connect with other parts by welding and other methods. In addition, it also has good plasticity and is easy to carry out processes such as cutting, bending, and stamping.
Q235B seamless pipe is a seamless pipe made of carbon structural steel defined in accordance with the Chinese national standard GB/T700. It has certain strength and good processing performance at room temperature, good surface quality, and can meet the use requirements of general engineering.
Q235B is a carbon structural steel with a chemical composition of carbon (C) ≤ 0.22%, manganese (Mn) ≤ 1.4%, silicon (Si) ≤ 0.35%, etc. Q355B is a low alloy steel, and the implementation standards vary depending on the material.
It has excellent castability and weldability, is easy to cast and weld, and is conducive to the manufacture of parts of various shapes and processing and assembly. It also has good plasticity and is easy to cut, bend, stamp and other processes. Due to its low carbon content, the welding process window is wide and it is suitable for most conventional welding methods, such as manual arc welding, gas shielded welding, etc. It is also easy to perform deformation processing such as cold bending and stamping, and is suitable for making special-shaped components.
