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    Mechanical properties of steel

    View: 112405/06/2017  

    Mechanical properties of steel


    Mechanical properties are often referred to as elasticity, plasticity, stiffness, aging sensitivity, strength, hardness, impact toughness, fatigue strength and fracture toughness.

    Elasticity: the deformation of a metal material under external force and the ability to regain its original shape when taken out of an external force.

    Plasticity: the ability of a metal material to produce permanent deformation without causing damage when subjected to external force.

    Stiffness: the ability of metal materials to resist elastic deformation when subjected to force.

    Strength: the ability of metal materials to resist plastic deformation and fracture under external force.

    Hardness: the ability of metal materials to resist stiffer objects pressed into them.

    Impact toughness: the ability of metal materials to resist fracture under impact loading.

    Fatigue strength: the maximum stress that occurs when a metal material is subjected to numerous repeated or alternating loads without causing fracture.

    Fracture toughness: the performance index used to reflect the material's ability to resist crack expansion


    Example:GB   45#  


    mechanical property

    Normalization: 850;

    Quenching: 840;

    Tempering: 600;

    Tensile strength: no less than 600Mpa;

    Yield strength: no less than 355Mpa;

    Elongation: 16[1]%;

    Shrinkage: 40%;

    Impact work: 39J;

    Steel delivery status hardness [1]:

    Hot rolled steel: less than 229HB

    Annealed steel: less than 197HB

    Component editor

    The main component is Fe (Tie Yuansu), and contains the following elements:

    C:0.42~0.50%

    Si:0.17~0.37%

    Mn:0.50~0.80%

    P: = 0.035%

    S: = 0.035%

    Cr: = 0.25%

    Ni: = 0.25%

    Cu: = 0.25%[1]

    Density 7.85g/cm3, elastic modulus 210GPa, Poisson's ratio 0.269.

      

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