We support you with tests and ensure reproducible results!

EMCC supports you with tests around DIN EN ISO 20567!
DIN EN ISO 20567 describes a test method to simulate stone impact damage. This is done by single and/or multi-impact testing. This test, also known as the Gravel Bombardment Test, is mainly used in the automotive sector or in the rail sector, where vehicles are exposed to grit or gravel.

Technical specifications

  • Chamber size: 600 x 580 x 500 mm³ (l x w x h)
  • Pressure: 1 – 4 bar (100 – 400 kPa)
  • Gravel from 3 mm to 16 mm (not only chilled iron grit possible)
  • Tests also possible on entire components
  • Tests acc. to ISO 20567
  • Tests acc. to ISO 16750-3
  • Tests acc. to  John-Deere standard JDQ 53.3
  • Tests acc. to Mercedes standard DBL_7399 Section 5.3.2 

Gravel Bombardment Test - Procedure

Stone chip resistance of coatings is tested by projection of many small sharp-edged impactors. The bombardment material is defined chilled iron grit, which is shot with compressed air onto the coating at a certain angle. Working pressure, mass of the bombardment material, shelling time and construction of the test device do affect the extend of damage.

  • Gravel Bombardment Test after Testrun

    Surface after a test run acc. to ISO 20567

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