Material : 42CrMo4+QT Dimension :Diameter 200mm-800mm Length 2M-12M Forging +QT+Machining 42CrMo4 is a chromium-molybdenum low-alloy steel renowned for its exceptional combination of strength, toughness, and fatigue resistance. With an EN/DIN designation of 1.7225, this quenched and tempered stee...
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Material : 42CrMo4+QT
Dimension :Diameter 200mm-800mm Length 2M-12M
Forging +QT+Machining
42CrMo4 is a chromium-molybdenum low-alloy steel renowned for its exceptional combination of strength, toughness, and fatigue resistance. With an EN/DIN designation of 1.7225, this quenched and tempered steel delivers outstanding mechanical properties: yield strength of ≥650 MPa, tensile strength of ≥900 MPa, and excellent impact toughness even at low temperatures.
Ideally suited for marine shaft applications, 42CrMo4 propeller shafts and intermediate shafts transmit engine torque reliably under continuous torsional load and harsh seawater exposure. The free forging process ensures directional grain flow along the shaft axis, enhancing structural integrity under bending and torsional vibration. Customizable dimensions are available, with ultrasonic testing and heat treatment options including quenching and tempering.
Trusted globally, 42CrMo4 is equivalent to AISI 4140/4142 (USA) and SCM440 (Japan), making it a widely accepted material standard for demanding marine propulsion systems.
