Ultasonic Hardness Tester





Ultrasonic Hardness Tester UGH300

-About the UCI method (Ultrasonic Contact Impedance)

In order to solve the problems of workbench Vickers hardness tester (Long test time; Bulky and heavy; Not suitable for test on site and test large workpiece; Huge technical demand for the operators), in 1961, Ultrasonic Contact Impedance, a hardness testing method was developed by Dr. Claus Kleesattel, and the hardness tester designed by UCI method is called Ultrasonic Hardness Tester.

UCI method uses a spring to generate the test force required for Vickers hardness test, test force is applied to the user's workpiece by means of a resonating rod which is inlaid with a 136 ° diamond regular pyramid indenter, the diamond indenter forms a Vickers diamond indentation on the workpiece. The diagonal length of the indentation corresponds to Vickers hardness, and the diagonal length also corresponds to the frequency change of the resonating rod, so the hardness of the workpiece can be known from the frequency change of the resonating rod.

-Characteristics of UCI method

*Directly test Vickers hardness value of workpiece, and there is no need to convert like Leeb or Shore hardness tester. The conversion error is eliminated.

*High test speed -- output test results within seconds

*Standard Vickers indentation, tiny indentation, little damage to the workpiece

*The test results are related to the elastic constants of the workpiece. New workpiece needs to be calibrated according to the elastic constants.

*Small volume, light weight and easy to carry.

*Easy to test on assembly line.

*It can be used for testing on site and testing large workpiece and can be used to make hardness measurements on positions difficult to access, such as tooth flanks or roots of gears.

*Only measuring the hardness condition of the surface contacted

*The development of microcontroller technology makes it easy to calibrate workpiece with different elastic constants.

-Functional Characteristics of the UGH300

*Main hardness scale: HV

Convertible hardness scale: HRC, HRA, HRB, HBW

*In multi-points calibration mode, any hardness scales can be chosen.

*Testing range: HV50~1599, HRC20~68, HB85~650

*Test direction:Support 360° test, as long as the angle between the indenter and the surface doesn’t exceed 90° ± 3°.

*Battery: 3.6V, 3000mAh lithium battery

*Endurance: 10 hours

*Test data can be exported to computer terminal.

*Norms: GB/T 34205-2017; DIN 50159-1-2008; ASTM-A1038-2005; JB/T 9377-2010; JJF 1436-2013.

*High accuracy----±4%HV, ±4%HB, ±1.5HR.

*Tiny test indentation---- requires a high-power microscope to see.

*Little damage to the workpiece.

*High test speed----output test results in 1s at the soonest.

*New appearance design, innovative sculpt, convenient to hold and good craft.

*Full English display, menu-type operation, few keys, simple and convenient to operate.

*3.5 inches large LCD screen with 320×480 color graphics dot matrix, beautiful font and graphics, rich information and clear display.

*Directly display the current measured value, cumulative measured value, maximum value, minimum value, average value and conversion value.

*50 sets of data storage.

*Simple calibration----5 sets of one-block calibration data, 1 set of default calibration data and 5 sets of multi-blockss calibration data can be stored in the host.

*For materials with different elastic constants, just an one-block calibration is required to adapt to the new material.

*For unknown material or material without conversion table, the hardness scale can be arbitrarily selected for multi-points calibration to eliminate the systematic error brought by the conversion table.

*Easy to test on assembly line.

-The Application

*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 with large radians, and irregular plane

*Hardness test of most ferrous and nonferrous metals and their alloys in industrial production

*Hardness test of thin coatings


- The Test range and Accuracy

Model Ultrasonic Hardness Tester UGH300

Test range: HV50-1599, HRC20-68, HB85-650, HRB41-100, HRA61-85.6,
     HS34.2-97.3, MPa255-2180

Accuracy  ±4%HB, ±1.5HR, HV please refer to the table below 


Hardness valueMaximum allowable relative error of hardness tester %

-Probes optional

Probe1kgf manual probe2kgf manual probe3kgf manual probe5kgf manual probe10kgf manual probe
Test force9.8N19.6N29.4N49N98N
Resonating rod diameter2.4mm2.4mm2.4mm2.4mm2.4mm
Maximum roughness of test surfaceRa<3.2μmRa<5μmRa<5μmRa<10μmRa<15μm
Minimum workpiece weight0.3kg0.3kg0.3kg0.3kg0.3kg
Minimum workpiece thickness2mm2mm2mm2mm2mm
ApplicationIon nitriding die,formwork, fixture, thin-walled workpiece,bearing, tooth flanks, pipelineIon nitriding die,formwork, fixture, thin-walled workpiece,bearing, tooth flanks, pipelineIon nitriding die,formwork, fixture, thin-walled workpiece,bearing, tooth flanks, pipelineGroove, tooth flanks, roots of gearsSmall forgings, foundry materials, weld inspection,HAZ, low requirement for roughness

-Standard Delivery


*Manual probe (2kgf)

*Probe connection cable

*5V ac power adapter

*USB cable

*Standard hardness workpiece

*Equipment case

*Operating manual

*Certificate ,Warranty card and Packing list


-Basic info

a)Temperature: -10℃~40℃; Humidity: ≤ 90%RH, No strong electromagnetic interference;

b)Battery: 3000mAh/3.7V

c)Host size: 170mm*70mm*20mm

d)Probe size: Ǿ22mm*150mm

e)e) Weight: 650g