What Is Breaking Strength?

Breaking strength (breaking strength or Break load) refers to the ratio of the tensile force to the cross-sectional area of the fracture when the material fractures, that is, the stress. Depending on the material and thickness of the material, its measurement equipment also changes, but the general principle remains the same.

Breaking strength

Linear in the radial direction of the geotechnical sample

The principle of the measuring equipment is shown below.

In the case where simultaneous determination of elongation is required, the length of the test sample will be specified. For example, an important indicator of the bonding wire used in the semiconductor industry is the breaking strength and elongation. The measurement conditions of the bond wire are different according to the inch and metric units. The length of the sample is also different.

When in metric units:

The length of the sample is 10 cm, and the speed of uniform drop is 10 mm / min. The load at break is both the breaking strength and the unit of force is g, kg, mN, cN, N, etc. The ratio of the length extended until the break to the length of the sample itself (10 cm) is the elongation (%).

When in Imperial units:

The length of the sample is 25.4mm, and the speed of the uniform speed drop is 25.4mm / min. The conversion method is the same as above.