SAE4130 alloy steel pipes have high strength and toughness, high hardenability, and good thermal strength. They have sufficient high-temperature strength below 500 ℃ and good machinability.

Chemical Composition

Mechanical Property

SAE4130 alloy steel pipes are usually used in the quenched and tempered state, and steel with a lower carbon content can also be used as carburizing steel with higher core strength requirements. In the mechanical manufacturing industry, it is mainly used to manufacture quenched and tempered parts with large cross-sections that work under high stress conditions, such as shafts, spindles, and high load control wheels, bolts, double headed bolts, gears, etc; Used in the chemical industry to manufacture welded parts, welding structures composed of plates and pipes, and high-pressure conduits working in nitrogen-containing hydrogen media at temperatures not exceeding 250 ℃; Used in the manufacturing of fasteners for working below 450 ℃ and flanges subjected to high pressure below 500 ℃ in the steam turbine and boiler industries.