This test method shall be used to determine the compression properties of metal center tubes and contact surfaces of metal parts with bolt through holes for initial sample approval and quality assurance.

Definition.

The compression properties of metal center tubes and contact surfaces of metal parts with bolt through holes as determined by this test method shall be defined as the permanent length change of a part mentioned above, when subjected to an axial pressure applied at a fixed velocity.

The compression properties can be expressed by a force-displacement hysteresis curve.

Note: Nothing in this specification supersedes applicable laws and regulations.

Note: In the event of a conflict between the German and the English language, the German language shall take precedence.