VIII
Impact device type D
This is the standard device in impact hardness testing because it
measures in all of the units and materials covered with the QH5. The
type D impact device covers the widest range of applications.
Impact device type DC
This device type, just like impact device type D, can also measure in all
units and materials but features a much shorter body (50mm) making
ideal for measurements in hard to reach places that cannot be
accessed with a type D device. Unlike impact device D that is spring
loaded, device DC is loaded manually
Impact device type DL
The long and thin tip on impact device type DL allows access to very
narrow areas that cannot be measured with any other impact device.
This device measures steel only.
Impact device type G
This impact device type includes a large hardness tip that is 5mm in
diameter and it also releases the highest impact energy at 90 N*mm
allowing its use over rough surfaces such as those in founded and
forged pieces and in grey cast iron.
Impact device type C
On device type C the impact tip produces the less amount of energy
when compared to other device types (up to 25% less than device type
D) therefore becoming the best choice for measuring treated surfaces
on steel parts and for measuring smaller pieces. The lower release
energy level produces the smaller test piece indentation. This device
measures steel only.
