The carbon content of 16Mn seamless steel pipe is 0.1% -0.25%, and the main alloy elements Mn, Si, V, Nb and Ti are added; its total alloy content is <3%. According to the strength, it can be divided into 4 levels: 300, 350, 400 and 450MPa. There are mainly Q295, Q345, Q390, Q420, Q460. : "Q" is the Chinese pinyin capitalization of the yielded "Qu" character, the following number is the minimum yield point (σs) value of the brand, and the subsequent symbol is based on the content of the steel impurity elements (sulfur, phosphorus) When it is low, it is divided into A, B, C, and D with the changes of carbon and manganese. Among them, A and B grade steel is usually called 16Mn. Due to the low carbon content of 16mn seamless steel pipes, the tendency to harden is reduced and the tendency to cold cracking is reduced. However, as the strength level increases and the plate thickness increases, it still has a certain tendency to cold cracks. When welding on site, cellulose electrodes, self-shielded flux-cored welding wire and other hydrogen-containing welding materials are often used, which has low line energy and fast cooling speed, which will increase the sensitivity of cold cracks. Necessary welding measures such as welding are required. Before warming up.

The above is the relevant knowledge of 16mn seamless steel pipe, especially its performance and physical properties, which are necessary for our actual production and life, otherwise, 16mn seamless steel pipe will not play a greater role Function, efficiency will also be affected, please contact us for more information!