S275JR and S275J0 are two materials of European standards, both of which belong to the mild steel series, which are widely used in construction, bridges, vehicles, ships and other fields. The features and differences between these two materials are detailed below.
1. Chemical composition.
The chemical composition of S275JR and S275J0 is basically the same, with the main difference being the carbon content. S275JR has a higher carbon content of 012%～0.20%, while S275J0 has a lower carbon content of 012%～0.20%。In addition, the manganese content of the two materials is also slightly different, with the manganese content of S275JR being 030%～0.65%, while S275J0 has a manganese content of 030%～0.60%。These differences in chemical composition make the two materials different in terms of mechanical properties and areas of use.
2. Mechanical properties.
There are also some differences in the mechanical properties of S275JR and S275J0. Due to the higher carbon content of S275JR, it has a relatively high yield strength of 275 340MPa, a tensile strength of 340 470MPa, and an elongation of 21%. The yield strength of S275J0 is 275 360MPa, the tensile strength is 360 460MPa, and the elongation is 21%. These differences in mechanical properties make the two materials have different advantages and disadvantages in different applications.
3. Areas of use.
Due to the different chemical composition and mechanical properties of S275JR and S275J0, their application fields are also different. S275JR is mainly used in construction, bridges, ships and other fields, because it has good toughness and welding performance, and at the same time, it is relatively cheap. S275J0 is mainly used in vehicles, machinery and other fields, because it has high strength and hardness, and at the same time has certain wear resistance and fatigue resistance.
Fourth, other features.
In addition to the above features, the S275JR and S275J0 have some other advantages. For example, they all have good processing properties and welding properties, and can carry out processing operations such as shearing, bending, welding, etc. In addition, they all belong to the low carbon steel series, which has better toughness and corrosion resistance compared to high carbon steel.
In short, although S275JR and S275J0 both belong to the European standard low carbon steel series, there are certain differences in chemical composition, mechanical properties and use fields. Understanding these differences can help us choose the right material for each occasion.