For hot forging with closed dies, aluminium and steel are the most common materials. Each material has a clear set of qualities that make it either the suitable material or the wrong material for the job. Here are the main differences between stainless steel forging and aluminium, which can help you decide which material is best for your design.
Aluminium forging is a process that is used to make the material stronger. Forging is the process of making metals stronger by heating them and then hitting them with something like a hammer or press.
Stainless Steel Forging
Stainless steel forging is a way of working with metal that involves putting a lot of pressure on steel billets in forging dies to get the shape you want. In the process of closed die steel forging, a medium frequency furnace is used to heat a metal bar or billet to a specific temperature. The metal is then placed between the dies and hammered until it fills the die cavity.
Stainless Steel Forging Vs Aluminium Forging
When making anything by hot forging, cost and price are always important things to think about. The price of aluminium and steel bars changes based on fuel costs, global supply and demand, and the price and availability of bauxite ore and iron. Stainless steel forging, on the other hand, is often less expensive per pound than aluminium. The price of finished forged products is directly related to how much the raw materials cost.
Aluminium is a perfect metal for forging because it is more elastic and malleable than steel. Aluminium can be forged into shapes that steel can’t, which are often deeper or more complicated. Aluminium is a suitable material for forging, especially for parts with straight, deep walls. Steel is solid and durable, but it can’t usually be forged to the exact extreme dimensions as aluminium without cracking or tearing.
Even though being able to be shaped is essential for making things, the best thing about aluminium forgings is that they don’t rust without any extra work. Forgings made of aluminium will not rust.
When it comes to Aluminium forging, the only treatments are shot blasting or anodization. No coating or paint can chip or wear away. After closed die forging, steel, but not stainless steel, must be painted or treated with anti-rust paint to protect it from rust and corrosion. This is especially true if the steel forging part will be used in a wet, damp, or harsh environment.
Even though steel can rust, steel forging is more complex than aluminium because steel and aluminium have different densities. Forging steel makes it less likely to bend and strong, warp, or break when force, weight or heat are applied. Still, steel forging is much heavier and has more mass than aluminium forging. Most of the time, steel is 2.5 times as dense as aluminium.
Forged parts will be much better than cast parts, whether made of aluminium or steel. You don’t have to worry that the show won’t go well. You should choose the best forgings manufacturer in the closed die forging process.