The Advantages Of 4140 And 4130 Seamless Steel Tubes In Hydraulic Field
The advantages of 4140 and 4130 seamless steel tubes are mainly reflected in their physical properties and application fields.
4130 seamless steel tube has high strength and toughness, and high hardenability. The critical hardenability diameter in oil is 15-70mm. This type of steel has sufficient high-temperature strength below 500 ℃, but its strength significantly decreases at 550 ℃. 4130 structural steel is used in the quenched and tempered state, suitable for carburizing steel that requires high core strength. It is commonly 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. In addition, 4130 seamless steel tubes are used in the chemical industry to manufacture welded parts, welded structures composed of plates and pipes, as well as high-pressure conduits working in nitrogen hydrogen containing media at temperatures not exceeding 250 ℃. In the manufacturing industry of steam turbines and boilers, 4130 seamless steel pipes are used to manufacture fasteners for working below 450 ℃, flanges and flange covers for high-pressure working below 500 ℃.
Compared with 4130, although there is less specific information, according to the provided information, 4140 seamless steel tubes also has good physical properties and application fields. It may have similar strength and toughness to 4130, but may exhibit different advantages in certain specific applications, especially in applications that require higher strength or specific working environments.
Overall, both 4130 and 4140 seamless steel tube play an important role in industrial applications such as OEM hydraulic cylinder built due to their high strength and excellent toughness, especially in applications that require high stress and high temperature environments. The choice of material depends on specific application requirements and working environment conditions.