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NINGBO LARGE STONES HARDWARE & ELECTRICAL TRADING CO.,LTD
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SOMETHING ABOUT SCREWS
Different material grades not only determine the mechanical properties of the bolt, but also affect its corrosion resistance, high temperature resistance and applicable environment. Below, we will detail several common stainless steel bolt material grades.
1. SUS201
SUS201 stainless steel is a chromium-nickel-manganese stainless steel that contains low nickel elements, so the price is relatively affordable. SUS201 bolts perform well in dry environments, but have poor corrosion resistance in wet or corrosive environments. Bolts of this material grade are commonly used for equipment connections in some indoor, mildly corrosive environments.
2. SUS304
SUS304, also known as 18/8 stainless steel, is so named because it contains 18% chromium and 8% nickel. This is a very common stainless steel material with good corrosion resistance, heat resistance and processability. SUS304 bolts perform well in most environments and are particularly suitable for use in food, medical and light chemical industries.
3.SUS316
3.SUS316
SUS316 adds molybdenum element on the basis of SUS304, thereby significantly improving its corrosion resistance in chloride environments. Therefore, SUS316 bolts are often used in highly corrosive environments such as marine and chemical industries. In addition, it has good heat resistance and can maintain stable performance at high temperatures.
4. SUS316L
SUS316L is a low-carbon version of SUS316 with better welding performance. In applications requiring welding, SUS316L bolts can effectively avoid the risk of intergranular corrosion. Bolts of this material grade are often used in high-end equipment manufacturing, petrochemical industry, and offshore engineering.
In addition to the common material grades mentioned above, there are other stainless steel bolt materials such as SUS400 series. Which material grade of bolts to choose needs to be decided based on the actual use environment and needs. The correct choice can not only ensure the safe and stable operation of the equipment, but also reduce maintenance costs and increase service life.
