What is the hardness test method of seamless steel pipe?

Seamless steel pipes are subject to mechanical performance testing. Seamless steel pipes are widely used to manufacture structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames, and steel scaffolding used in construction. Steel pipes are used to make ring parts, which can improve material utilization, simplify manufacturing processes, and save Steel pipes have been widely used for manufacturing materials and processing man-hours. The mechanical properties test methods are mainly divided into two categories, one is the tensile test, and the other is the hardness test.

The tensile test is to make a seamless steel pipe into a sample, pull the sample to break on a tensile testing machine, and then measure one or several mechanical properties, usually only the tensile strength, yield strength, elongation after fracture and rate of reduction in area.

The hardness test is to slowly press a hard indenter into the surface of the sample under specified conditions, and then test the depth or size of the indentation to determine the hardness of the material. Hardness test is a simple, rapid and easy to implement method in material mechanical property test.