The choice of manufacturing materials for an air compressor directly affects its performance, durability and applicable scenarios.
Cylinder and Piston Assemblies
Cast iron (HT250/HT300): Used for low-to-medium pressure models; low cost and good wear resistance
Stainless steel (304/316): Suitable for applications requiring high cleanliness, such as food processing and pharmaceuticals
Aluminum alloy: Preferred for lightweight compressors; offers excellent heat dissipation
Screw Air-End Materials
Rotors: Typically made of 42CrMo alloy steel; nitriding treatment achieves a hardness of HRC60+
Casing: Often made of QT500 ductile iron; offers high resistance to deformation
Cooling System Materials
Copper tubing (99.9% pure copper): Traditional air-cooled models
Stainless steel corrugated tubing: Water-cooled models requiring high corrosion resistance