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This is an awesome unit. Simple to use the entire shop is able to use this from ...
Tim Littlehead on 02/07/2015
Great Service!! Bede took time to answer all our questions before purchase and t...
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TCM-U3 Portable Ultrasonic Hardness Tester

Price: $6,995.00 $2,895.00
Product Code:  tcm-u3
Availability:  In Stock
Condition:  New

Available Options

* Main Probe to include with tester:

Optional 2nd UCI Probe:

Optional Rebound Probe & Leeb Software in Tester:

Set of 3 HRC Test Blocks for UCI probes only:

2 reviews  (2 reviews)   |   Write a review

NEW PRODUCT - Introductory Price.

Large full color screen, graphing display, 88 combinations of metals and hardness scales, user definable hardness scales and metals, display modes for histogram, graph, smart, average, deviation etc. Ruggedized case with rubber bumpers. 3 year warranty on probe and tester.

Our device has the same spec and accuracy as the top priced models selling for $10000 and more. This tester has the option to add a D (universal) rebound type test probe with firmaware activation that turns the device into a TCM-UD3. This means you get the best of both technologies, UCI and Rebound. The D type is ideal for Non Ferrous materials, coarse grained parts like cast iron etc. that are not suited to UCI testing. Can be added for only $650

Download the product brochure HERE


Available Models

Advantage or Benefit

Typical Applications

50N 11.2lbf


Considered to be the Universal type for most general applications.
11lbs of downward hand pressure is required to activate the probe.
Surface finish equivalent to 80 grind or better.

Induction or carburized machined parts, e.g.. camshafts, turbines, weld inspection, HAZ.
Measurement in grooves, gear tooth flanks and roots
Turbine blades, inside tubes with∅> 90mm

10N 2.2lbf


Load is easy to apply; provides control to test on a sharp radius.
Only 2.2lbs of downward hand pressure is required to activate the probe.
Surface finish equivalent to 150 grind or better.

Ion-nitrided stamping dies and molds, forms, presses, thin-walled parts
Bearings, tooth flanks
Turbine blades, inside tubes with∅> 90 mm

Ultrasonic Contact Impedance (UCI) hardness tester TCM-U3 is designed for rapid non-destructive testing of hardness:

  • metals and alloys on standardized hardness scales: Rockwell (HRC), Brinell (HB), Vickers (HV);
  • metals with different properties from steel (for example, non-ferrous metals, alloys, etc.) with five additional scales for calibration; The device can be quickly and easily calibrated to a single specimen of known hardness ( for plus/minus testing ) or to a range of hardness from 2 specimens of the same material and of known upper and lower hardness values. The best is 3 sample specimens of the same material of different hardness. With 3 it is then possible to test through the whole range of hardness values of a material type. The unit has user calibration fields for Steel, Alloy Steel, Stainless Steel, non ferrous materials and several user definable fields. Each in Rockwell C, Brinell, Vickers, plus 2 custom fields for other scales. The tester is supplied with the UCI probe/s pre configured for Steel, using NIST traceable test blocks, in HRC and HB. The tester can be finely calibrated to an exact material type e.g.. P20 or H13 but for most users the general calibration, in this case Alloy Steel is generally accepted. Because the tester can be calibrated to specific materials, that range of material classes and options is enormous and huge advantage of testers that have fixed material types.
  • use of the scale of tensile strength (Rm) for determining the tensile strength of carbon steel products by automatically converting from the scale of hardness, Brinell (HB);

Implements the method of ultrasonic contact impedance (UCI).

 Hardness testing of small parts and difficult to reach places
 Hardness of High speed steel cutting blades


 Hardness testing of cast iron part with optional Leeb type D probe


 Display of soft keyboard to name and store test results


 Statistical display of test results

The UCI Hardness Tester TCM-U3 operates according to the Ultrasonic Contact Impedance (UCI) method of hardness testing, and is standardized according to ASTM A 1038. The basic operating principle is that hardness is measured by detecting the frequency shift of a longitudinal oscillating rod fused to a Vickers diamond indenter. The diagonals of the indentation are not optically measured as with traditional Vickers tests, so there is no need for cumbersome optical evaluation with a microscope. Instead, the indentation area is electronically detected by measuring the frequency shift. The shift is proportional to the size of the indentation. This method enables quick and easy measurement: position probe, press to apply the test load, and read off the hardness value. TCM-U3 probes use a Vickers diamond indenter that gives you the precision to position it on a tiny point. Indentations produced by the TCM-U3 are much smaller than equivalent Rockwell indentations, making this one of the least destructive portable hardness testers available. These attributes make the TCM-U3 well suited to these typical applications: - Heat affected zone (HAZ) of welds - Hardness progression curves - Fine-grained materials - Heat-treated materials - Thin layers and coatings - Surface hardened parts - Thin wall pipe - Small parts

The advantages of ultrasonic contact impedance hardness tester TCM-U3:

  • hardness measurement of any mass products with a thickness of 1 mm - inaccessible to the dynamic (Leeb) hardness testers (small parts, thin-walled structures, pipes, tanks, steel sheets, articles of complex shape, hardness control of metal coatings, etc.)
  • small print on the product surface (mirror surfaces is possible to hardness check necks shafts, blades, gear teeth, etc.)
  • measuring the hardness of the surface hardened layer
  • wide range of hardness
  • convenience and ease of measurement
  • optimized number of buttons
  • large full color graphic display with bright back-lighting

Examples of parts that are most suited to this type of portable testing and cannot be done at all or as easily by other portable test methods are.

  • case-hardening articles
  • hard plating
  • Spray welded for build up or hardening
  • thin-walled pressure vessels
  • thin-walled pipelines
  • semi-finished industrial products (thinner castings, sheets)
  • welded joints
  • Other big metal parts like crankshafts, rotors, gears, bearings etc. are easier to test with this type of tool due to the thinner contact area.
  • Automatic recognition of probe
  • indication of the type of connected probe
  • Calibrations stored in memory of probe. So interchangeable with other TCM testers
  • battery life display
  • extended temperature range (frost, down to -20 degrees Celsius LED)
  • internal memory and data connection with PC
  • new, intuitive menu with tips on the buttons
  • Optional print to wireless (RF signal) mini printer
  • Water resistant case
  • Rubber bumper surrounds case, so drop resistant
 Probe to hardness NOVOTEST


Optional hardness test specimens NIST traceable, sold as a set of 3. These are for the UCI probes only. D-type testers use thicker test blocks:

Rockwell Hardness test blocks
(25~30)HRC (35~40)HRC (60~65)HRC


TCM-U3 Specifications:
Product Name Ultrasonic Hardness Tester
Model TCM-U3
Loading Force 1kgf (10N) 2.2 lbf and/or 5kgf (50N) 11lbf
Measuring Range HV:230~940; HRC:20~70; HB:90~450. Tensile strength, MPa 370~1740
Measuring Accuracy HV:±3%HV; HRC:±1.5HRC; HB:±3%HB
Indenter 136°Vickers Diamond Indenter
Measuring Direction Any direction 360°
Data Storage To save 2000 measurements and 100-groups of data
Communication Upload data to a PC and export as a spreadsheet ( cable and software included )
Hardness Scale HV、HB、HRC
Materials Steel pre configured. 88 Calibration Scales of Hardness. Divided into 8 Scales and 11 materials for each.
Data display Load applied/contact, Single test result, Average of tests, Number of tests, deviation.
Hardness indication Backlit Color LCD display.
Operating Environment Temperature:-20℃~40℃; Humidity: 30%~80%R.H
Operating Voltage DC 6V
Instrument Dimensions 122x65x23mm
Net Weight Approx. 0.2kg (0.45lb) (Without probe)
Power 3 AA rechargeable batteries
Battery life Approx. 20 hours. Auto Power off.

Optional D Type Probe Values:

The values below are pre configured for the optional D type (Leeb/Rebound) type probe. The user can also create/customize their own materials and hardness values.






Tensile Strength (MPa)

Steel & Cast Steel






Alloy Tool Steel






Stainless Steel






Cast Iron






Nodular Iron






Aluminum Alloys

























Restrictions on the use of UCI probe

Not specifically suited for measuring the hardness of products with a coarse-grained structure (e.g, cast iron), unheatreated aluminum, or other soft non ferrous materials or parts ( D type probe option can measure those materials ) weighing less than 10 grams (0.35oz), or less than 1 mm (0.04") thick.

Standard package TCM-U3

  • electronic tester unit
  • ultrasonic probe choice of 10N or 50N
  • special support for flat and curved faces
  • 3 NiMh batteries with wall charger
  • user manual
  • cables
  • Free software ( link sent vai email upon request after purchase) and USB communication cable for PC
  • Hard shell foam padded carry case
  • Screwdriver

Free PC Software


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TCM-U3 Ultrasonic w/D probe, Wireless Printer, UCI probes etc

by CIMETRIX Staff on 04 Feb 2014
The video shows new features and many other details of the new TCM-U3 color display Ultrasonic Hardness tester. Comparison to TCM-U2 Demonstration of accuracy and ease of use With D probe option Wireless printer option Smart mode test Histogram Statistics etc
View more

TCM-U3 calibration and correct probe use for testing

How to use the UCI test probe to get accurate results. Detailed instruction on calibrating the tester.
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