This method doesn’t use boundness. It use less energy to get hardness tester value of thin piece. So the followings we could test by UH300 Ultrasonic Hardness Tester.
Hardness test of flange edge and gear root stamping parts, mold, thin plate, face-hardened gear tooth, gear groove and taper part
Hardness test of axle and thin-wall pipes and vessels
Hardness test of wheels and turbine rotors
Hardness test of bit edge
Hardness test of welding parts
Measure the depth of deep hole with certain aperture, concave and convex mark with large radians, and irregular plane
You also cold refer the range, we could do.
HV50-1599, HRC20-76, HB76-618, HRB41-100, HRB41-100, HRA61-85.6, Mpa255-2180