Spring Materials and Surface Conditions

Use documentation for the actual supplied material and scope of the requirement, with a traceable revision and lot where relevant.

Specify the approved lubricant, application condition and compatibility requirements with the complete assembly.

Use a sampling plan that addresses the material form, lot definition and characteristics important to the design.

It allows performance differences to be attributed to material, process or geometry instead of mixing those causes.

Review the actual materials, environment and contact condition rather than assessing the spring in isolation.

Check relevant dimensions, output and contact behavior under defined exposure and recovery conditions.