Chemical composition of stainless steel products

In addition to the main chemical components Fe iron, the stainless steel products also contain a small amount of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), oxygen (0), nitrogen (N) ), titanium (Ti), vanadium (V) and other elements, although the content of these elements is small, they have a great impact on the performance of stainless steel products.

Carbon is the most important element that determines the performance of stainless steel products, it affects the mechanical properties of stainless steel products such as strength, plasticity, toughness and so on. When the carbon content in the steel is below 0.8%, as the carbon content increases, the strength and hardness of the steel increase, while the plasticity and toughness decrease; but when the carbon content is greater than 1.0%, with the increase of the carbon content, the steel's strength and hardness increase. Intensity decreased. Generally, carbon steel for engineering is low carbon steel, that is, the carbon content is less than 0.25%, and the carbon content of low alloy steel for engineering is less than 0.52%.

The knowledge of stainless steel products

Beneficial elements in steel include manganese, silicon, vanadium, titanium, etc., which can be smelted into low-alloy steel by controlling the amount of doping. The main harmful elements in steel are sulfur, phosphorus and oxygen, and special attention should be paid to controlling their content. Phosphorus is one of the most harmful elements in steel, and it is mainly dissolved in ferrite for strengthening. With the increase of phosphorus content, the strength and hardness of stainless steel products increase, and the plasticity and toughness decrease significantly. In particular, the lower the temperature, the greater the impact on plasticity and toughness, thereby significantly increasing the cold brittleness of stainless steel products. Phosphorus also significantly reduces the weldability of stainless steel products, but phosphorus improves the wear and corrosion resistance of steel. Sulfur is also a very harmful element, which exists in steel as non-metallic sulfide inclusions, reducing steel various mechanical properties of the material.

Due to the low melting point of sulfide, the stainless steel products cause the separation of grains during the hot working process, causing the stainless steel products to fracture, resulting in a hot brittle phenomenon called hot brittleness. Sulfur reduces the weldability, impact toughness, fatigue resistance and corrosion resistance of steel. Oxygen is a harmful element in steel, mainly exists in non-metallic inclusions, and a small amount is melted in ferrite. Non-metallic inclusions reduce the mechanical properties of the steel, especially the toughness. Oxygen has the effect of promoting aging tendency. The low melting point caused by oxides also deteriorates the weldability of the steel.

The recommendation of stainless steel products manufacturer

As the stainless steel products manufacturer-TJYCT Steel Co., Ltd. sells high-quality stainless steel products. I believe you have known about the knowledge of stainless products by the paper abpve. If you want to know more knowledge about stainless steel products, you can visit the website of TJYCT Steel Co., Ltd.