main mechanical properties



basic mechanical properties of metals represented strength, hardness, ductility, toughness, creep and iznosoustochivostyu.The strength of metals is their resistance to deformation and degradation caused by stretching, compression, torsion, bending and cutting.The loads thus divided into inner and outer, as well as static and dynamic. External loads are presented in weight, pressure, etc., while the internal load presented by heating, cooling, change in metal structure, etc.

metal hardness is called coefficient of resistance to penetration of a solid.Elasticity - the abi
lity to restore the original shape after the end of any external load.Plasticity - the ability to change shape without breaking, and under the influence of a particular load, and shape retention after the removal of the load.Toughness is the resistance of metals to shock loadings, measured in Joules per square meter.Creep - slow and continuous plastic deformation under the effect of constant loads (particularly at elevated temperatures).Fatigue - gradual destruction at a large number of re-variable load, whereas endurance - keeping property to the given load.

Additional mechanical properties



basic mechanical properties of metals are: tensile strength (tensile strength of conventional voltage), the true tensile strength (tensile strength, effective stress), physical yield stress (strain at the minimum voltage) and yield strength (voltage, under which the residual elongation of the specimen is 0.2 area%).
Mechanical properties of metals determined in the process of static, dynamic and re-test variables.

also to the mechanical properties of metals include: the conditional limit of proportionality (voltage, under which a deviation from the linear dependence up to 50% increase in magnitude), the elastic limit (voltage corresponding to permanent deformation), elongation after fracture (increment to the original length of the sample gauge length), and the relative constriction after rupture.