Burst of Screw head at the compression - 1.7034
Treatment : quenched and tempered
Magnification : 6,5 : 1
Etching medium :
Sampling / Specification : surface - head burst
Testing result :
very strong burst in the area of the
upseted screw head
Treatment : quenched and tempered
Magnification : 50 : 1
Etching medium :
Sampling / Specification : transverse
Testing result :
slag in the surface proximity 0,98 mm deep