Stainless steel screws have strong anti-rust and anti-corrosion properties, and are widely used outdoors and in places where they are often exposed to rain. Generally, the stainless steel screws we refer to are just a collective name for materials. The details can usually be divided into the following categories:
201 stainless steel screws
Material grade: 17Cr-4.5Ni-6Mn-N; however, the 201 material referred to in the domestic market usually does not meet this standard. The default refers to ordinary stainless steel with a nickel content of less than 1%, which is not required for anti-rust performance. The price is also the cheapest in places where there is no contact with water indoors, which is equivalent to half of the price of 304 material.
304 stainless steel screws
Element content: Carbon C: ≤0.08, Silicon Si: ≤1.00, Chromium Cr: 18.00-20.00, Manganese Mn: ≤2.00, Nickel Ni: 8.00-11.0, Phosphorus P: ≤0.045, Sulfur S: ≤0.030, among which check whether Authentic 304 material, nickel element is the most important element, as long as the nickel element is greater than 8%, then we can basically conclude that the 304 material is correct. Among them, 304 material is the most commonly used stainless steel screw.
316 stainless steel screws
Material grade: 06Cr17Ni12Mo2, the corrosion resistance is better than 304 stainless steel, and it has good corrosion resistance during use. Moreover, 316 stainless steel is also resistant to the erosion of the ocean and the corrosive industrial atmosphere.
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