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QH Family

Portable Metal Hardness Testers

Model Comparison Table

To make it easier for you to choose the right metal hardness tester for your application and needs, we have summarized the salient and distinctive features of each model and its range of applications.

QH family instruments

Slide the table horizontally to fully display its content.

Models

Heavy Duty

Method

Devices / Probes

Auto angle

Data output

Memory

DataCenter
dmq QH7 Series electronic unit    QH7 L
Leeb
D, DC, DL, C, G, E
USB
RS232
32000
   QH7 U
UCI
UCI probes
   QH7 C
Leeb / UCI
D, DC, DL, C, G, E, UCI probes
dmq QH5 Series electronic unit    QH5 D
Leeb
D / DC
USB
RS232
32000
   QH5 G
G
   QH5 M
D, DC, DL, C, G, E
   QH5 U
UCI
UCI probes
dmq QH2 Series electronic unit    QH2 S
Leeb
D / DC
None
Without memory
   QH2 DLS
USB
1000
   QH2 P
None
Without memory
   QH2 DLP
USB
1000
NOTES
  • QH2 S and QH2 DLS models do not include a reference test block.
  • QH7 L, QH7 C and QH5 M models include a type D impact device. All other impact device types are optional.
Available impact devices and UCI probes

Impact devices include CalTag technology so that they are recognized and automatically adjusted. CalTag is supported in all QH5 Series models that operate on the Leeb method.

Impact devices include GyroTag technology which in addition to CalTag adds automatic impact device angle recognition. GyroTag is supported in QH7 Series models that operate on the Leeb method.

Impact devices - Leeb

Type D impact device
General use (universal) impact device that offers the widest ranges in all hardness units and available materials.

Type DC impact device
Type D impact device with a short body that is ideal for measurements in reduced spaces.

Type C impact device
A low impact energy that also produces a smaller indentation makes this impact device ideal for superficial heat treatment and small part measurements.

Type G impact device
A greater impact energy allows measurements on rough surfaces with little preparation. Recommended for large, founded and forged parts.

Type DL impact device
Features a tip that is 50 mm long and has a diameter of 4 mm making it ideal to measure in hard to reach places such as grooves and gears.

Type E impact device
Uses a synthetic diamond ball allowing high hardness measurements (up to 1200 HV). This is the best option to measure hardened steel or parts with similar treatments.

UCI probes

10N UCI Probe
Ideal to measure superficial hardness, polished surfaces and small parts with a good finish.

50N UCI probe
Measure induction or cemented treated parts such as crankshafts, gears, welds and heat affected zones.

98N UCI probe
Recommended for use in founded parts, weld seams and heat affected zones even in unmachined surfaces.

Slide the table horizontally to fully display its content.

Material

D

DC

C

G

DL

E

UCI
Steel and cast steel
  Brinell (HB) 80-647 80-647 80-683 90-646 80-647 83-663 95-500
  Vickers (HV) 80-940 80-940 80-996 - 80-940 84-1211 100-940
  Rockwell C (HRC) 20-68 20-68 20-70 - 20-68 22-71 20-68
  Rockwell B (HRB) 38-99 38-99 - 48-100 38-96 - 55-100
  Rockwell A (HRA) - - - - - 61-88 -
  Shore (HS) 32-99 32-99 32-100 - - 36-103 32-97
  Rm (N/mm2) 275-2194 275-2194 275-2194 305-2194 275-2194 283-2195 320-2190
Alloy tool steel
  Vickers (HV) 80-898 80-898 - - - 82-1009 -
  Rockwell C (HRC) 20-67 20-67 - - - 22-70 -
Stainless steel
  Brinell (HB) 85-655 85-655 - - - - -
  Vickers (HV) 85-802 85-802 - - - - -
  Rockwell C (HRC) 20-62 20-62 - - - - -
  Rockwell B (HRB) 46-101 46-101 - - - - -
Grey cast iron
  Brinell (HB) 93-334
90-664*		 93-334
90-664*		 - 92-326 - - -
  Rockwell C (HRC) 21-59* 21-59* - - - - -
  Vickers (HV) 90-698* 90-698* - - - - -
Spheroid iron
  Brinell (HB) 131-387
95-687*		 131-387
95-687*		 - 127-364 - - -
  Rockwell C (HRC) 21-60* 21-60* - - - - -
  Vickers (HV) 96-724* 96-724* - - - - -
Cast aluminium
  Brinell (HB) 30-165 30-165 33-167* 32-168* 21-187* 46-176* 40-160
  Vickers (HV) 43-193* - - - 21-191* - 44-189
  Rockwell B (HRB) - - - - - - 28-91
Brass
  Brinell (HB) 40-173 40-173 - - - - -
  Rockwell B (HRB) 13-95 13-95 - - - - -
Bronze
  Brinell (HB) 60-290 60-290 - - - - -
Wrought copper
  Brinell (HB) 45-315 45-315 - - - - -

*The range is achieved with the QH7 Series equipment.

dmq DataCenter

It's our acquisition software for PC that allows to receive, process and export the data stored in our equipment with datalogger.

DataCenter is available for download from our website at no additional cost.

More information and Download
DataCenter software for PCs with OS Windows

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