Cast iron materials refer to iron-carbon alloys with carbon content more than 2.11%. In addition to carbon, there are also elements such as silicon, manganese, and a small amount of sulfur and phosphorus. Cast iron is usually made of pig iron, scrap steel, ferroalloys, etc. in different proportions through smelting. It has good performance in features such as casting, shock absorbing, pressure resistance, wear resistance, cutting processing, etc. Compared with other metal materials, cast iron production equipment and technology are relatively simple and low in price, so it is widely used in machinery manufacturing, petroleum, chemical industry, metallurgy, transportation and military industries, etc. Industrial cast iron generally contains 2.5% to 3.5% carbon. Carbon mostly presents in the form of graphite in cast iron. Based on the form of graphite, it can be roughly divided into white cast iron (steel-making pig iron), gray cast iron, malleable cast iron, ductile iron, etc.

Weiyu Machinery uses multi axis milling machines, machining centers, CNC tools, and grinding machines to manufacture high-precision lightweight aluminum alloy parts, meeting the manufacturing needs of vehicles, power machinery, and other parts. Aluminum alloy has low density, but high strength, close to or exceeding high-quality steel, good plasticity, and can be processed into various profiles with excellent conductivity and thermal conductivity.

Stainless steel is a general term for high-alloy steels typically made from iron with 12% to 30% chromium and other alloying elements added. WEIYU utilizes multi-axis milling machines, machining centers, digital machine tools, and grinders to manufacture high-precision stainless steel parts for vehicles, power machinery, and other applications.

Carbon steel is an iron alloy with added carbon elements, also known as iron carbon alloy.

Carbon steel refers to metal materials with a carbon content higher than 0.02% but lower than 2% (those with a carbon content higher than 2% are called cast iron, and those with a carbon content lower than 0.02% are called wrought iron), which have the highest production and minimal doping of other elements. Carbon steel has the characteristic of tightly connected carbon atomic bonds, with greater strength than iron, higher hardness than stainless steel, and a cheaper price.

Carbon steel is divided into high carbon steel, medium carbon steel, and low carbon steel. Usually applied to metal parts that require strength, hardness, and wear resistance, the higher the carbon content of steel, the higher its hardness, strength, and wear resistance after heating treatment.