Stainless 430
Stainless Steel 430 (SUS 430) is a stainless steel similar to Grade 304, but does not contain nickel. causing the magnet to stick but will not stick to the steel size but also has good anti-rust properties Although not as high as 304, this grade contains 0.12% carbon, making it stronger than 304 and 316 stainless. Suitable for work with higher loads. Because normally stainless steel tends to be tougher than hardness. In the case of carbon content greater than 0.15%, it becomes grade 420, which has a hardness suitable for making kitchen utensils in various cutting matters, such as making knives, etc.
In making stainless steel screws, SUS 304 grade is preferred to be durable enough for the environment. SUS 316 grade is used for work in the chemical industry, in the lab or in the sea. The stainless steel drill bit screws are grade SUS 410 because they are hard enough and grade 304 or grade 316 cannot be used because they are not hard enough. But the ability to withstand rust is less.