What is the difference between 316L stainless steel pipe and 316 stainless steel pipe?

[导读] : Everyone should know that there are many materials of stainless steel pipe, such as 304, 316 and 316L. Among them, there are many uninformed will think that 316 and 316L are the same, and do not know what they all represent. Today, I will talk about what is the difference between 316L stainless steel pipe and 316 stainless steel pipe.

Everyone should know that there are many materials of stainless steel pipe, such as 304, 316 and 316L. Among them, there are many uninformed will think that 316 and 316L are the same, and do not know what they all represent. Today, I will talk about what is the difference between 316L stainless steel pipe and 316 stainless steel pipe.

316L stainless steel pipe and 316 stainless steel pipe difference?

1, the difference in production costs

316 L stainless steel has a low carbon content and is easy to weld, so the price of 316 L stainless steel pipe is more expensive than 316 stainless steel pipe, but the difference is not great. In addition, 316 L stainless steel can also be called ultra-low carbon steel plate 316 stainless steel.

2, the difference in the strength of stainless steel pipe

The tensile strength of 316 stainless steel pipe is higher than 316 L stainless steel pipe.316 stainless steel pipe has a tensile strength higher than 520 MPa~(316 L) stainless steel pipe.316 stainless steel pipe has a tensile strength of only more than 480 Mpa.This is due to the fact that the element of carbon is a strong austenite-forming element, which can significantly enhance the strength of stainless steel pipe.

3, the difference between specific applications

The cost difference between 316 L stainless steel and 316 stainless steel is not large, and the corrosion resistance and weldability of 316 L stainless steel is significantly better than general 316 stainless steel. From the producer's point of view, it seems that the stainless steel factory is reluctant to produce, because the requirements for general 316 stainless steel are very low. Therefore, the actual circulation in the market is basically low carbon 316 L stainless steel, general 316 stainless steel is rarely sold, unless there are special requirements.

4, the difference between welding treatment

Carbon has a negative impact on the corrosion resistance of stainless steel pipe. In particular, the need to weld stainless steel, welded low carbon 316 L stainless steel corrosion resistance is lower than 316 stainless steel. 316 stainless steel welded section needs to be solution annealed after welding. If the use of 316 L stainless steel, it is not necessary to weld after solution annealing.

5, the difference in corrosion resistance

316 L stainless steel pipe has stronger corrosion resistance, suitable for strong corrosion areas such as seashore. In addition to this, 316 stainless steel pipe is not recommended to consider the previous conditions.

6, the difference between the scope of use

In most cases, 304 stainless steel pipe is enough to meet the application requirements. Because 316L stainless steel pipe is more expensive, from the point of view of material cost, the use of 316L stainless steel pipe is about 1.5 times that of 304 stainless steel pipe, and thus it is appropriate to customize the use of 316L steel pipe.