If you are looking for key materials for precision machining, stainless steels are an excellent choice. Their exceptional corrosion resistance makes them particularly suitable for highly reliable mechanical components, ideal for applications involving aggressive agents such as acids, bases and salts. In this article we take an in-depth look at the different types of stainless steel used in precision machining and the most common production processes.
Main types of stainless steel
Stainless steels are alloys made mainly of iron, chromium and other elements such as nickel and molybdenum. In precision machining, the main grades include:
- 1.4301 | AISI 304: commonly used for highly reliable parts such as pipes, valves and components for chemical and food plants.
- 1.4305 | AISI 303: known for its machinability and corrosion resistance, often used for high-precision parts such as gears.
- 1.4401 | AISI 316: a high-quality grade for parts that must withstand critical conditions such as saline environments and high temperatures. Commonly used in the marine and chemical industries.
- 1.4028 | AISI 420B: known for its hardness and wear resistance, ideal for blades, knives and other cutting tools.
- 1.4057 | AISI 431: a high-quality grade for components that are difficult to machine but require high resistance to corrosion and fatigue.
Stainless steel production involves several processes, including forging, melting, casting, drawing, rolling and extrusion. The choice depends on the requirements and performance needed from the parts. Forging, casting and other processes each have advantages and disadvantages that affect cost, lead time and product quality.
Choosing stainless steels for precision machining
The most suitable stainless steel depends on the performance required of the parts and the best production processes to achieve it. Corrosion resistance and machinability are key factors. Choosing the right processes ensures a perfect result, with high quality, durability and strength in everyday use.
We are a precision turning shop with extensive experience and continuous technology investment, keeping us at the forefront of the sector. Our certified quality, on-time delivery and ability to offer custom solutions make us a qualified reference for the Italian and international markets. We supply products requiring electroplating, heat treatments and grinding, working with certified, skilled suppliers.
For more details on our services and the use of stainless steels in precision machining, read our other articles on stainless steels and their applications, or see the materials we machine.