In this day and age, one of the most common materials from which fasteners are made is stainless steel. ASTM A193 Stainless Steel Fasteners are extremely ubiquitous these days. However, most people who use them are usually not familiar with the characteristics of stainless steel as a material used to build fasteners. It’s important for you to gain even a basic understanding of how this material works so that you can then figure out how to take advantage of it in any project. It’s also a good idea to know of the different types of stainless steel that are available, and what their applications are.
Stainless steel is one of the high strength building metal materials. Stainless steel has good corrosion resistance, which can keep the integrity of engineering design permanently. Chromium containing stainless steel also has mechanical strength and high ductility. It is easy to process and make parts, which can meet the needs of architects and structural designers. All metals react with oxygen in the atmosphere. Oxide film on the surface. Unfortunately, the iron oxide formed on ordinary carbon steel will continue to oxidize, the corrosion will continue to expand, and eventually form holes. Paint or anti-oxidation metals (such as zinc, nickel and chromium) can be electroplated to ensure the surface of carbon steel. However, as we all know, this kind of protection is only a kind of film. If the protective layer is damaged, the steel below will start to rust.
Why is stainless steel so popular?
Over the past few years, the use of stainless steel has become more common. This is mainly due to the fact that it’s not only resistant to corrosion, but can also maintain its strength even when subjected to very high temperatures. Any material made from stainless steel is likely to last very long in most environments regardless of humidity levels or any other factors that might increase the risk of rusting, such as the presence of saline water. Some of the common industries in which stainless steel fasteners are used include architecture, automotive design and the design of electronics.
The types of stainless steel you are likely to come across
When you are buying stainless steel fasteners, it would be a idea for you to understand that there are many different subtypes available. Knowing about each will make it much easier for you to determine which one to use for a particular application. Some of the most common include:
Type 304: This is one of the most common types of stainless steel in the industry. In fact, more than half the stainless steel produced in the world is made of this type. Type 304 stainless steel is usually designed to withstand ordinary corrosion, and is designated as austenitic (contains chromium and nickel).
Type 316: Type 316 stainless steel is also austenitic. However, it contains an additional 2 to 3 percent of Molybdenum in addition to the chromium and nickel. This makes it much stronger compared to type 304 stainless steel. The addition of Molybdenum in the alloy also makes it a bit more expensive as well.
Type 409: This is technically known as a ferric type of stainless steel. It contains plain chromium and is well known for resisting very high temperatures. It also happens to have the lowest grade of chromium in all types of stainless steel, and is, for this reason, one of the cheapest you can find.
Type 410: This is martensitic stainless steel, which means that it contains plain chromium. This makes it particularly strong. It’s also cheap and heat treatable and is also non-corrosive. Due to all these features, it’s the most ideal type of steel used in heavy-duty settings.
Type 430: SS 430 Fasteners is also very commonly used. It’s ferritic stainless steel and has features of resistance against corrosion. It’s mostly used for decorative purposes.