The average load to which an item may be subjected before visual deformation occurs, or a load that is applied in the performance of a proof test.
The maximum stress that can be sustained within a bolt repeatedly without damaging the material. Normally equal to 85% of the yield strength of the bolt material.
the load applied to an item under controlled testing; varies from 10% to 100% in excess of the items normal load
A specific load applied to chain or chain assemblies during a proof test, a non-destructive test carried out to a specific multiple of the working load limit.
Quality control check to verify that the yield point is above a specified load.
A predetermined load, generally some multiple of the service load, to which a specimen or structure is submitted before acceptance for use.