top of page
4340 Special

4340 Special

SKU: 4340

EU: -

 

DESCRIPTION: 4340 is a group of premium aerospace grade low alloy steels that can be obtained in the form of bars, forgings and mechanical tubing after heat treatment to high strength levels.

  • Chemical Composition

    Element

    Min %

    Max %

    C

    0.38%

    0.43%

    mn

    0.65%

    0.90%

    Si

    0.15%

    0.35%

    P

    -

    0.01%

    S

    -

    0.01%

    cr

    0.70%

    0.90%

    Ni

    1.65%

    2.00%

    B.C

    0.20%

    0.30%

    C

    -

    0.35%

bottom of page