Crystalline structure in a welding seam
Magnification : 6,5 : 1
Etching medium : 3 % alcoholic nitric acid
Sampling / Specification : transverse
Testing result :
multilayer welding seam
hardening test HV 5
testing area 1 : 155
testing area 2 : 280
testing area 3 : 210
testing area 4 : 215
testing area 5 : 210
testing area 6 : 225
testing area 7 : 205
testing area 8 : 540
testing area 9 : 290
direct links over the numbers in the picture