To define the quality of metals, there are different properties considered. For some applications, ductility is considered as good while for other, the same property may pose a problem while moulding. Similarly, conductivity is considered good in some applications while in others, it is considered as the bad property for a specific application. Thus, a wide set of parameters need to be fulfilled while setting the quality standards for metal. But to check the properties or to assess the properties, you need to put the metal in testing conditions, because it is not possible with visual observation.

There are different testing standards issued by relative authorities for metal testing and for that matter many metal testing instruments are available in the market. In certain tests, the sample needs to deform. They are also called destructive tests, others are nondestructive tests.

Destructive Testing

In destructive testing, a sample of the material whose properties is to be tested is prepared. The testing is usually not done on end product. According to test standards, the sample of predefined shape and size is put to test.

Tensile Testing – It’s a very common test practice in almost every industry, whether related or not with metal. In this test, the metal is subjected to outward pull or tension. The force will be applied until there is necking or fracture of the sample. While in tests, the sample is subjected to heat or cold treatment first, to analyse its response on properties when subjected to severe environmental conditions. The prior treatment brings a considerable change in the properties of metal and it may elongate before fracturing.

Environmental test – The test sample is exposed to accelerated, stimulated and controlled environmental conditions. The sample exposure is done for a predefined period depending upon the testing standards or internal standards of the industry. Tests like, humidity, salt spray, fog, rain etc. are done to check the corrosion resistance of the material.

Non-Destructive Testing

Nondestructive testing is usually done to assess properties like thickness measurement, endurance testing. In very crucial applications like aerospace and automobile industry, even tiny components are important. Thus, before starting the mass production, every component is tested for its durability.

Thickness testing – MagnaMike 8600 is used for measuring the thickness of non-ferrous materials like alloys. It works on the principle of hall effect gauging. The instrument comes with a probe having a magnetic tip. Using half effect sensor, the difference in the probe and target ball is converted into electrical signal and thus processed by the system to display the thickness in human readable form.

For more information about metal testing instruments, contact our team.