The most commonly used metal materials in machining typically include:

The most commonly used metal materials in machining typically include:

Steel: Steel is one of the most commonly used metal materials due to its excellent mechanical properties and relatively low cost. It is available in a variety of different alloys, such as carbon steel, alloy steel, tool steel and stainless steel, each with its own specific purpose.

Aluminum: Aluminum is widely used in machining due to its lightweight, corrosion-resistant, and easy-to-machine properties. It is particularly popular in aerospace, automotive and consumer electronics.

Stainless Steel: Stainless steel is known for its excellent corrosion resistance and is used in applications that require corrosion resistance, such as food processing and medical equipment.

Brass: Brass is an alloy of copper and zinc with good mechanical properties and corrosion resistance, and is commonly used in the manufacture of valves, fittings, and instrumentation.

Copper: Copper has excellent electrical and thermal conductivity and is commonly used in electrical and heat exchange applications.

Titanium: Titanium has high strength, low density and excellent corrosion resistance and is commonly used in the aerospace, medical and chemical industries.

These metals are used in a wide range of machining applications, and the choice of material usually depends on the use and performance requirements of the end product.