Characteristics of 50CrMo4 steel: 50CrMo4 steel has high strength and toughness, good hardenability and no obvious tempering brittleness. 50CrMo4 steel is suitable for manufacturing large and medium-sized plastic mould with certain strength and toughness. 50CrMo4 steel can be used to manufacture the big gear for locomotive traction, booster drive gear, ASTM A514 quenched and tempered steel pressure vessel gear, rear axle, connecting rod and spring clamp with great load, as well as the drill pipe joint and fishing tool for oil deep well below 2000m, and 50CrMo4 steel can also be used for the die of bending machine, etc.
Chemical composition of Q390C steel plate: C ≤ 0.20, Si ≤ 0.50, Mn ≤ 1.7, P ≤ 0.030, S ≤ 0.030, Nb ≤ 0.07, V ≤ 0.20, Ti ≤ 0.20, Cr ≤ 0.30, Ni ≤ 0.50, Cu ≤ 0.30, N ≤ 0.015, Mo ≤ 0.10, Al ≤ 0.015. The mechanical properties of Q390C steel plate are: yield strength ≥ 390 MPa, tensile strength 470-620 MPa, elongation after fracture ≥ 18%, impact energy 34J. ASTM A514 quenched and tempered steel, Q390C steel plate is used for bridges, vehicles, ships, workshops and other large structural parts, high and medium pressure Petrochemical vessels, boiler tubes, pipes, superheaters, pressure vessels, heavy machinery, etc. application.
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