The purpose of ST44-2 steel
ST44-2 steel is a common type of carbon structural steel, which is widely used in the production of fixed parts, welded structures, pipes, vessels and shipbuilding and so on. It belongs to ordinary low alloy steel and is not alloyed with any other alloy elements.
Because of its reliable welding effect and good moving performance, ST44-2 steel has been widely used in many fields, ranging from the production of cars to ships and bridges. St44-2 steel is also used in the construction of frames, bridges and seawalls, as well as in some parts and components of mechanical structural parts.
ST44-2 steel is characterized by its high strength and good hardenability. It can withstand a certain amount of impact and force, and its material strength is very good.Also, the general surface hardness of ST44-2 steel is around 250HB, and its elongation after fracture is usually between 21 and 24.
The chemical composition of ST44-2 steel is mainly composed of 0.15 ～0.17% of phosphorus and sulfur, 0.40 ～ 0.50% carbon, 0.60 ～ 0.90% manganese, 0.05 ～ 0.25% silicon, 0.02 ～ 0.05% copper, 0.2 ～ 0.35% nickel, 0.25 ～ 0.55 chromium and other elements.
It is worth noting that the welding performance of ST44-2 steel is very reliable. When welding this kind of steel, it should be heated to suitable welding temperature, and use welding materials of the same type. This is also beneficial to the ideal welding effect.
In summary, ST44-2 steel is a common type of ordinary low alloy carbon structural steel widely used in various fields. Its main characteristics are high strength and good weldability. It is generally used in the production of fixed parts, welded structures, pipes, vessels and the shipbuilding industry. In addition, its chemical composition should be strictly controlled in production to ensure the quality of the steel, so that it can be applied better.
