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    Hotline:400-880-1556

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    Project Introduction

    Tensile strength test can also be called tensile test for metal mechanical properties. Tensile test can measure a series of strength indexes and plastic indexes of materials. Strength usually refers to the ability of a material to resist elastic deformation, plastic deformation, and fracture under external force. Plasticity refers to the ability of a metal material to deform plastically under load without damage. Commonly used plasticity indicators are elongation and shrinkage.

    Guideline

    Reference standard for tensile strength test

    GB-T228-2002 Metallic materials Tensile test method at room temperature

    ASTM E8-04 Metal Tensile Test Method Metal Tensile Strength Test

    EN 10002-1:2001 Tensile test of metallic materials, normal temperature test method

    JIS Z 2241:1998 Metallic material tensile test method

    ISO 6892:1998 Metallic materials, tensile test at ambient temperature

    experiment procedure

    image.png

    Elastic zone (from 0 to yield strength YS)

    · Less elongation: corresponding percentage.

    · Elastic elongation: If the stress stops, the sample will return to its original length.

    · Yield strength: when the permanent elongation value reaches 0.2%.

    · Yield strength = force at yield (N) / original area of the tensile specimen (mm2) or the same MPA value.

    · Longitudinal modulus: ratio of applied force to elongation length (depending on metal).

    · Transverse modulus: the ratio of elongation to interface shrinkage (applies to all metals ~ 0.3).

    Plastic zone (from tensile strength UTS to yield strength YS)

    · Large elongation: a few percent for general metals, up to 50 to 60 percent.

    · Inelastic elongation: if the stress stops, the specimen remains permanently strained.

    · Breaking force: record of tensile strength (UTS).

    · Tensile strength = maximum force (N) before breaking the tensile test / original area of the tensile specimen (mm2) or the same MPA value.

    · Due to the cold work effect, the strain will continue to increase with the test.

    After breaking

    · The overall length needs to be measured to calculate the elongation.

    · E% = (Lu – L0) / L0 x 100 (Lu is the final length, L0 is the initial length).

    Young's modulus-important parameter

    · Modulus of elasticity E: unit N/mm2.

    · Yield strength YS 0.2: Unit N/mm2 or MPa.

    · Transverse modulus: Poisson coefficient, always around 0.3.

    · Breaking force: UTS, unit N/mm2 or MPa, except in special cases.

    · Elongation at break E%: ductility, E<5% is brittle (brittleness).

    · Executive standards: NF EN 10002 and ASTM E8, the difference between the two is the measurement difference (L0) of different elongation values.


    Online consultation

    Online consultation

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    Tensile strength test

    Tensile strength test can also be called tensile test for metal mechanical properties. Tensile test can measure a series of strength indexes and plastic indexes of materials. Strength usually refers to the ability of a material to resist elastic deformation, plastic deformation, and fracture under external force.

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