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  • SCM435 Steel Composition & Properties - A Comprehensive Guide
    SCM435 is a chromium-molybdenum steel, also known as 4140 steel, and its chemical composition is as follows:

    Element | Percentage

    ------- | --------

    Carbon (C) | 0.38-0.45%

    Silicon (Si) | 0.15-0.35%

    Manganese (Mn) | 0.70-1.00%

    Phosphorus (P) | ≤ 0.035%

    Sulfur (S) | ≤ 0.035%

    Chromium (Cr) | 0.80-1.10%

    Molybdenum (Mo) | 0.15-0.25%

    Other elements may be present in small amounts, depending on the specific manufacturer and heat treatment.

    Key features of SCM435:

    * High strength and hardness: Due to the presence of chromium and molybdenum, SCM435 has excellent strength and hardness, even at elevated temperatures.

    * Good toughness and ductility: The balanced chemical composition results in good toughness and ductility, making the steel resistant to cracking.

    * Good wear resistance: The presence of chromium contributes to its wear resistance.

    * Heat treatable: SCM435 is heat treatable, allowing for further enhancement of its mechanical properties.

    Applications:

    SCM435 is widely used in various applications, including:

    * Automotive components: Gears, shafts, axles, connecting rods

    * Machinery parts: Pulleys, sprockets, bearings, spindles

    * Tools: Dies, punches, cutters

    * Other industrial applications: Structural components, fasteners

    The exact properties of SCM435 can vary depending on the specific heat treatment applied. Heat treatment can significantly alter its strength, hardness, toughness, and other properties.

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