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300M

300M

SKU: 300M

EU: -

 

DESCRIPTION: 300M is 4340 steel modified by adding more vanadium and silicon. These chemical composition modifications provide an alloy steel with very good fatigue strength, ductility, impact strength and fracture toughness. 300M is widely used for Aircraft Landing Gear.

  • Chemical Composition

    Element

    Min %

    Max %

    C

    0.38%

    0.43%

    mn

    0.65%%

    0.90%

    Si

    1.45%

    1.80%

    P

    -

    0.010%

    S

    -

    0.008%

    cr

    0.70%

    0.95%

    Ni

    1.65%

    2.00%

    B.C

    0.30%

    0.50%

    V

    0.05%

    0.10%

    C

    -

    0.35%

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