Grain Test: Piping Quiz

Metallurgical Tests confirm that the chemical requirements of pipe are as per the material standard.

The grain size of a metal or single phase alloy is an estimate of the average grain diameter

grain Size is usually expressed in meters

As the average grain size decreases, the metal becomes stronger

Factors which influence the grain size are:

Certain elements, such as titanium and niobium, create resistance towards grain growth in stainless steels

Grain growth is due to an alteration of the internal energy of the molecular structure of a given metal, ceramic or mineral

Cold work results in finer grains

A longer time at the target temperature in annealing promotes grain growth.

The common industry standards are