1. Stainless steel screws are a family of iron alloys, each of which contains more than 12% chromium . Chromium is an anti-corrosion component, so all stainless steels have strong corrosion resistance. Generally speaking, the higher the chromium content, the better the corrosion resistance.
2. Nickel elements in stainless steel screws use fasteners. In the process of using stainless steel as the material, the use of nickel elements was once more dependent. However, as the global price of nickel elements rises, the price of fasteners has also been greatly affected. Influence. In order to alleviate the cost pressure and improve the competitiveness of fasteners, fastener manufacturers especially looked for alternative materials and produced low-nickel stainless steel fasteners.
3. If stainless steel is used as the main material for fasteners in stainless steel screws, it is necessary to understand the magnetism of stainless steel itself. Stainless steel is generally considered to be non-magnetic, but in fact, austenitic series materials may appear to be magnetic after a certain processing technology. However, if you think that magnetism is the standard for judging the quality of stainless steel fasteners, it is not correct.
4. In addition to iron and chromium, all stainless steel also contains carbon. But the carbon content is very low and is carefully controlled. The reason is that carbon can combine with chromium to form carbides, so that the chromium component has a very small effect on the formation of corrosion resistance. Therefore, in order to achieve the anti-corrosion effect, when the carbon content increases, the chromium content should be increased accordingly.
