4140 seamless alloy steel pipe

4140 steel is an alloy structural steel with high strength, hardenability, good toughness, and minimal deformation during quenching.

In terms of applications, 4140 alloy steel is mainly used to manufacture parts that require high strength and hardness, such as shafts, gears, spindles, crankshafts, mandrels, sleeves, and bolts, and can also be used as castings. In addition, this type of steel can also be used to manufacture mechanical parts that work at medium loads and speeds, such as steering knuckles, rear half axles of automobiles, as well as gears, shafts, worm gears, spline shafts, and top bushings on machine tools. In terms of heat treatment, 4140 alloy steel is usually quenched at around 850 ℃ to achieve higher hardness and wear resistance.

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