Impact bending Test
The test implies that the stud is bent to an angle of at least 60° or until breakage occurs. This is done by means of hammer blows or a bending pipe.

The stud 
• must break in the shank, not in the welding area
• or when welding sheet steels it must come off the sheet steel, bending a piece of sheet at right angles (pull a weld nugget).

The weld must not show any superficial fissures.
When using alloyed steel and special shapes of studs different tests conditions apply.
For further information see EN ISO 14 555.


studwelding  welding studs