Stainless Steel 1.4570 / AISI 303Cu
General Technical Characteristics
Stainless steel 1.4570 / AISI 303Cu is an austenitic corrosion-resistant steel with copper addition, specially developed to improve machinability on machine tools. Due to the presence of copper and sulfur, the material demonstrates excellent machinability by cutting, which makes it widely used in the production of complex-shaped parts.
Steel AISI 303Cu belongs to the group of free-machining stainless steels. It combines good corrosion resistance, stable mechanical properties, and high manufacturability. The material is widely used in mechanical engineering, instrument manufacturing, and the production of precision mechanical components.
Stainless steel 1.4570 is well suited for automatic machining, including turning, milling, and drilling operations.
Applications
Steel 1.4570 / AISI 303Cu is used in various industrial sectors:
- production of fasteners
- manufacturing of shafts and bushings
- parts for automatic machine tools
- instrument engineering
- mechanical engineering
- production of fittings and connecting elements
- components for pump and valve equipment
Due to its high machinability, AISI 303Cu is ideal for mass production of parts.
Features and Advantages
Key advantages of stainless steel 1.4570:
- excellent machinability on turning and milling machines
- good corrosion resistance in atmospheric conditions
- stable mechanical properties
- high precision in machining
- good wear resistance
- possibility of manufacturing complex parts
Due to these properties, AISI 303Cu is widely used for producing high-precision metal components.
Chemical Composition
| Element | Content % |
|---|---|
| Chromium (Cr) | 17–19 |
| Nickel (Ni) | 8–10 |
| Copper (Cu) | 1–3 |
| Manganese (Mn) | ≤ 2 |
| Silicon (Si) | ≤ 1 |
| Sulfur (S) | ≤ 0.35 |
| Carbon (C) | ≤ 0.15 |
| Iron (Fe) | balance |
Mechanical Properties
Main mechanical properties of AISI 303Cu steel:
- Tensile Strength (Rm): 500–750 MPa
- Yield Strength (Rp0.2): ≥ 190 MPa
- Elongation: ≥ 35 %
- Hardness: up to 200 HB
High machinability and stable properties make stainless steel 1.4570 / AISI 303Cu an optimal material for manufacturing precision parts and complex-shaped components.
