People often hear the question "Is the magnetic sa213 UNS N08904 904L super stainless steel pipe fake?" In fact, it is unscientific to judge the authenticity of the product by whether it is magnetic or not, so how to distinguish the true and false ? The following small series teach you how to distinguish between true and false.
We know that the common difference between sa213 UNS N08904 904L super stainless steel pipe and iron lies in the difference in carbon content. The content of carbon in iron is much higher than that of stainless steel. In the material of sa213 UNS N08904 904L super stainless steel pipe, the carbon content is different due to different materials.
One of the main ways to judge the quality of sa213 UNS N08904 904L super stainless steel pipe is the content of chromium and nickel contained in it. If the content of this car meets the requirements, it is qualified.
According to the non-magnetic and magnetic properties of stainless steel materials, it can be divided into austenite and two types. The former is non-magnetic or weakly magnetic, the latter is magnetic, and the other is non-magnetic. You are in the material. Contains relatively high manganese, so it can cause that not all sa213 UNS N08904 904L super stainless steel pipes are non-magnetic.
There is no great basis for judging the quality of sa213 UNS N08904 904L super stainless steel pipe by looking at whether it is magnetic.
Here are a few ways to tell if it's true or false:
1. It can be judged by using a special measuring solution. It belongs to the special test method for the tip of the nose, and can give accurate results for stainless steel of different materials.
2. To judge by using copper sulfate solution, drop a few drops of copper sulfate solution on the surface of sa213 UNS N08904 904L super stainless steel pipe.