Testing and evaluating the resistance of surface coating to chipping by gravel impact.
The test is designed to reproduce the effect of gravel or other media striking exposed paint or coated surfaces of an automobile and has been correlated with actual field results. It may be possible to extend this type of testing to finished parts or other types of materials such as anodized aluminum or plated plastics.

Users

Carmakers

Instruments

Maximum applicable pressure: 6 Bar.
Type of gravel: water worn gravel, chilled iron grit

Standard references

The test fulfills the requirements of the majority of automobile and light commercial vehicle manufacturers.
International standard: Sae J400 DIN EN ISO 20567-1