The mechanical properties of forgings are determined according to product requirements. The test methods are divided into hardness test, tensile test, impact test and fatigue test.

1) Hardness test

Hardness is the ability of the surface of the forging material to resist deformation and is an indicator of the hardness and softness of the metal material. There is a certain intrinsic connection between hardness and other mechanical properties, so the hardness value can be used to estimate other mechanical properties of the forging material. The hardness test does not require the preparation of special specimens and will not damage the specimens, so the hardness test is the most commonly used mechanical property test method in production. Commonly used hardness test methods and different values are: Brinell hardness (HB), Rockwell hardness (HRC), Vickers hardness (HV), Shore hardness (HS), and corresponding hardness testers.

2) Tensile test

The tensile load is applied to a specimen of a certain shape by a tensile machine to determine the proportional elongation stress, yield point, tensile strength, elongation and cross-sectional shrinkage of the forging material.

3) Impact test

The notched specimen is impacted with a high-speed pendulum to obtain the impact toughness of the forging.

4) Fatigue test

After forgings are subjected to repeated or alternating stress, their fatigue limit and fatigue strength can be measured.