AJH600 Pen Type Hardness Tester



Pen type design, self contained (Impact device and display integrated): no cables.

The unique large-screen OLED color display(1.77-inch OLED Screen) integrated hardness tester in the world.

Interchangeable D impact device (standard) /DL impact device (optional) can achieve one unit dual use; can be used in the restricted area measurement.

With standard AAA Lithium battery compartment, battery can be replaced. Highly accuracy in any impact direction (360°), au tomatically identify

impact direction and gravity compensation

Easy Operation, the four soft keys above the screen achieve the various functions.


Operating Principle


The impact body, which is equipped with tungsten carbide, impact velocities are measured at the 1mm point from the work piece in the following way: the integrated permanent magnet will produce directly proportional voltage with the impact velocity.

The Leeb hardness values are calculated by the following formula:





Display Type 1.77 inch OLED with resolution 160×128 pixels
Hardness HL, HB, HRB, HRC, HV, HS. σb.
Measuring HLD(200-960),  HRC(19.8-68.5),  HB(30-651),  HV(80-976),
Range HS(26.4-99.5), HRB(13.5-100), σb(375-2639)
Impact D type Impact device(standard); optional DL type impact
Device device
Accuracy ±6HLD (HLD=800), Repeatability ﹤6HLD (HLD=800)
Measuring 360 degree by manual setting
  Steel & Cast Steel, Stainless Steel, GC IRON, NC IRON,
Material Cast Aluminum Alloy, Macht Metal, Copper-tin Alloy, Brass,
  Forged Steel
Resolution 1HL, 1HV, 1HB, 0.1HRB, 0.1HRC, 0.1HS
Calibration Automatic
Language English
Memory 1000 groups, each group include 6 testing result and 1
average value
Communicati USB port, used for recharging and data transmission
Software VIEW Software for transmission, storage, and printing
Power AAA Polymer lithium battery ,Capacity of 600 MA/H, voltage:
3.7 V, warning under low voltage
Instrument AUTO OFF after 3 minutes of inactivity
Temperature -10℃~ +50℃
Net Weight 110g with D type impact device,125g with DL type impact
Size 150mm*46mm*23mm
Standard GB/T 17394-1998, ASTM A956


Standard Accessories

No. Item  
1 Main body  
2 D type impact device  
3 Test block with HLD value
4 Data View Software  
5 USB Communication Cable
6 Small Supporting Ring  
7 Recharger
8 Cleaning brush (I)
9 Instruction manual
10 Warranty card
11 Certificate of conformity
12 Instrument box
13 DL Impact Device – OPTIONAL