how do you test the tensile strength of steel?

Answer 1

Tensile testing involves pulling on a specimen material to determine the relationship between force and stretch, and the force at failure. This mechanical testing method is performed on virtually any kind of material: metals, plastics, paper, film, foil, wire, cordage etc.

There are many material properties that can be determined by tensile testing. Among the most common are:

Modulus
This is the measurement of the stiffness of a material - how much it deflects elastically for a given load.

Elongation
This is the total elastic and plastic (irreversible) stretch of the material before it breaks.

Ultimate Load
This is the maximum force that the specimen will accept before failure.

Yield Strength
This is the stress (load/area) at which a material begins to deform plastically.

Tensile testing can be performed on either finished products or specially cut or formed samples.

Careful consideration must be given to such issues as speed of testing, grip design and application, load cell selection, and others, to yield accurate and credible results.

Please visit following for complete test:
http://www.sintef.no/units/matek/PRESS/34_Olden.pdf
ASTM standards:
A955/A955M-02 Standard Specification for Deformed and Plain Stainless Steel Bars for Concrete Reinforcement .

Answer 2

The term tensile potential refers lower back to the quantity of tensile (stretching) rigidity a fabric can face as much as earlier breaking or failing. the suited tensile tension of a fabric is calculated by way of dividing the priority of the fabric shown (the go area) by potential of the stress placed on the fabric, frequently expressed in terms of pounds or a lot in line with rectangular inch of fabric. Tensile tension is an considerable degree of a fabric's potential to take part in in an application, and the size is broadly used while describing the homes of metals and alloys.

Answer 3

Start with a precisely measured dogbone test specimen of a known cross sectional area. Apply a load (slowly) to the specimen until it breaks. The ultimate strenght of the steel will then be the load when the specimen breaks divided by the cross-sectional area of the test specimen.

Steels, depending on the composition range from 25ksi to 125ksi.

Answer 4

Usually a dogbone shaped sample of the material is created and a large machine calibrated with strain gages pulls on either end until the material breaks. All of these kinds of test procedures are documented in ASTM (American Society for Testing Materials) specs. Most college libraries with engineering departments have copies of the ASTM test specifications.