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                what is EN/IEC 60068-2-75 IK hammer test and striking elements?
                
          
                 2025-08-01 
                
          
                
            
                 
                WHAT IS STANDARD EN/IEC 60068-2-75?
                HAMMER TEST
                Standard EN/IEC 60068 consists of 3 methods for testing the impact resistance 
of a test object against impacts with different severity levels. It serves to 
demonstrate the mechanical strength of a product and is intended primarily for 
the testing of electrical equipment. The test consists of a standardised test 
procedure with a defined number of impacts on the test object with a defined 
impact energy. Standard IEC 60068-2-75 covers impact energies from 0.14 J to 50 
J.
                EN 60068-2-75 DIMENSIONS TABLE OF IMPACT ELEMENTS
                IK CODE
                IK00
                IK01
                IK02
                IK03
                IK04
                IK05
                IK06
                IK07
                IK08
                IK09
                IK10
                IK11
                Impact energy (Joule)
                *
                0.14
                0.20
                0.35
                0.50
                0.70
                1.00
                2.00
                5.00
                10.00
                20.00
                50.00
                Drop Heigth (mm)
                *
                56
                80
                140
                200
                280
                400
                400
                300
                200
                400
                500
                Mass (kg)
                *
                0.25
                0.25
                0.25
                0.25
                0.25
                0.25
                0.50
                1.70
                5.00
                5.00
                10.00
                Material
                *
                P1
                P1
                P1
                P1
                P1
                P1
                S2
                S2
                S2
                S2
                S2
                R (mm)
                *
                10
                10
                10
                10
                10
                10
                25
                25
                50
                50
                50
                D (mm)
                *
                18.5
                18.5
                18.5
                18.5
                18.5
                18.5
                35
                60
                80
                100
                125
                f (mm)
                *
                6.2
                6.2
                6.2
                6.2
                6.2
                6.2
                7
                10
                20
                20
                25
                r (mm)
                *
                –
                –
                –
                –
                –
                –
                –
                6
                –
                10
                17
                l (mm)
                *
                Must be adapted to the appropriate mass
                Swing hammer
                *
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Spring hammer
                *
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                No
                No
                No
                No
                No
                Free fall hammer
                *
                No
                No
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Yes
                Specifications from the standard EN 60068-2-75
                * not protected according to the standard
                1.Polyamide 85 ≤ HRR ≤100 Rockwell hardness according to ISO 2039/2
                2.Steel Fe 490-2 according to ISO 1052, Rockwell hardness HRE 80...85 
according to ISO 6508
                1.png
                Table 1 Striking element characteristics
                Energy / J
                ≤1
                ±10%
                2
                ±5%
                5
                ±5%
                10
                ±5%
                20
                ±5%
                50
                ±5%
                Equivalent Mass ±2%kg
                0.25(0.2)
                0.5
                1.7
                5
                5
                10
                Material
                Nylon
                Steel
                R/mm
                10
                25
                25
                50
                50
                50
                D/mm
                18.5(20)
                35
                60
                80
                100
                125
                f/mm
                6.2(10)
                7
                10
                20
                20
                25
                r/mm
                -
                -
                6
                -
                10
                17
                l/mm
                Adjusted according to the equivalent mass, see Appendix A

                Table 2 Height of Fall
                Energy /J
                0.14
                0.2
                (0.3)
                0.35
                (0.4)
                0.5
                0.7
                1
                2
                5
                10
                20
                50
                Equivalent Mass /kg
                0.25
                (0.2)
                0.25
                (0.2)
                0.25
                (0.2)
                (0.2)
                0.25
                0.25
                0.25
                0.5
                1.7
                5
                5
                10
                 
                
          
                
          
          
                
        
                
      
                
    
                
  
                

                


                
  
                
  
                
    
  
                

                





 
 
  
 


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