What is the low-alloy steel?

 Types of low-alloy steel

Low-alloy steel refers to steel whose alloy element type and content are lower than the range specified by the national standard. According to the quality level (that is, according to the content of harmful impurities S and P in low alloy steel), low alloy steel can be divided into ordinary quality low alloy steel (such as general low alloy high strength structural steel, low alloy reinforced steel, etc.); high quality low alloy steel (such as general low alloy high strength structural steel, low alloy steel for boilers and pressure vessels, low alloy steel for shipbuilding); special quality low alloy steel (such as low alloy steel for nuclear energy, alloy steel for low temperature pressure vessels).