The Commonly Used Materials for Turned Parts

The commonly used materials for turned parts in China are as follows:

• Carbon steel is an iron-carbon alloy with a carbon content of 0.05% to 2.14%. Carbon steel has good strength, hardness, plasticity and toughness, good machinability, low price and wide application. Commonly used carbon steel turned parts materials are:

• Q235 is a common carbon structural steel with good strength and toughness, good machinability and wide application. It is widely used to manufacture various structural parts, such as shafts, gears, connecting rods, etc.

• 45 steel is a medium carbon alloy steel with high strength and toughness, low hardenability, and easy to crack when water quenched. Small parts are suitable for tempering treatment, and large parts are suitable for annealing treatment. It is mainly used to manufacture high-strength moving parts, such as turbine blades and compressor pistons.

• Cr12 steel is a high-carbon chromium steel with high hardness, high wear resistance and certain corrosion resistance. It is mainly used to manufacture wear-resistant parts, such as tools, measuring tools and molds.

• Alloy steel is a steel made by adding one or more alloying elements to carbon steel. Alloy steel has higher strength, hardness, toughness and wear resistance than carbon steel, as well as better hardenability and weldability. Commonly used alloy steel turned parts materials are:

• 40Cr is a medium carbon alloy structural steel with high strength and toughness, good hardenability and wide application. It is widely used to manufacture various structural parts, such as shafts, gears and connecting rods.

• 35CrMo is a medium carbon alloy structural steel with high strength and toughness, good hardenability, high wear resistance and impact resistance. It is mainly used to manufacture parts with high strength and good wear resistance, such as automobile gears and transmission shafts.

• 42CrMo is a medium carbon alloy structural steel with high strength and toughness, good hardenability, high wear resistance and impact resistance. It is mainly used to manufacture parts with high strength and good wear resistance, such as automobile gears and transmission shafts.

• Stainless steel is a class of steel with corrosion resistance. The main stainless steel turned parts materials are:

• 304 stainless steel is an austenitic stainless steel with good corrosion resistance, machinability and weldability. It is widely used to manufacture food processing equipment, medical devices, chemical equipment, etc.

• 316 stainless steel is an austenitic-ferritic stainless steel with good corrosion resistance, machinability and weldability, high temperature resistance, and acid, alkali and salt corrosion resistance. It is mainly used to manufacture parts with high corrosion resistance requirements, such as chemical equipment and marine engineering.

• Cast iron is an iron-carbon alloy with a carbon content greater than 2.14%. Cast iron has the characteristics of high strength, good wear resistance and good vibration damping performance. Commonly used cast iron turned parts materials are:

• HT200 is gray iron with high strength and toughness, good machinability and low price. It is widely used to manufacture various structural parts, such as machine tool beds and frames.

• QT500 is ductile iron with higher strength and toughness than gray iron and good wear resistance. It is mainly used to manufacture parts that are subjected to impact load and vibration, such as automobile transmission shafts and gearboxes.

• Aluminum alloy has the characteristics of light weight, high strength and good corrosion resistance. Commonly used aluminum alloy turned parts materials are:

• LY12 is an aluminum-silicon alloy with good casting and machining properties and good corrosion resistance. It is widely used to manufacture various structural parts, such as housings and housings.

• 2024 aluminum alloy is an aluminum-copper alloy with high strength, good corrosion resistance and good machinability. It is mainly used to manufacture aircraft parts and spacecraft parts.

• Plastic has the characteristics of light weight, good corrosion resistance and good machinability. Commonly used plastic turned parts materials are:

• POM is polyoxymethylene, which has good mechanical strength, rigidity and wear resistance, and is resistant to chemical corrosion. It is mainly used to manufacture precision parts, such as gears and bearings.

• PA is nylon, which has good mechanical strength, toughness and wear resistance, high temperature resistance and corrosion resistance. It is mainly used to manufacture structural parts, such as bearings and gears.

The specific choice of material depends on the requirements of the turned part.