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Leeb Hardness tester TKM‑359CE

Article: MP_359_BK_C
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Portable high precision hardness tester TKM‑359CE intended for quick measuring of metal items in laboratorial, manufacturing and field conditions.
Device is intended for non-destructive testing of production quality in metallurgy, mechanical engineering, aircraft, shipbuilding, atomic industry, oil and gas industry.

Hardness tester functions by Leeb method.

TKM-359CE controls hardness of following:

  • All basic types of metals and alloys without additional calibrations (structural, tool, corrosion-proof, heat-proof, non-corrosive steels and alloys as well as alloys of nonferrous metals, castiron, aluminium, bronze, brass);
  • Items with surface hardening and high frequency current hardening;
  • Items of complicated configuration;
  • Heavy and big items with rough surface.

Exploitation advantages

  • Wide range of controlled metals and alloys.
  • Low sensitivity to the curvative and roughness of surface.
  • Monitoring of hardness change along the surface.
  • Stable measurements independent from force and time of pressing the probe to the surface.
  • Possibility of material identification in blank production.
  • Control of “volumetric” hardness.

Features of TKM-359CE:

  1. Impact-, dust- and water- proof housing;
  2. Intuitive graphic interface;
  3. Bright color display allows working at below zero temperature and stays bright at any lighting;
  4. Signalization of exceeding of prescribed readings threshold;
  5. Unique system of statistic data processing and averaging of readings;
  6. Fast adjustment of readings and programming of additional calibrations to basic scales by 2 or less standard blocks;
  7. Flexible device memory for recording of readings and their analysis;
  8. Programming of additional scales calibrations of hardness tester by 2 or less standard test blocks;
  9. Fast programming of additional scales by 2 to 10 standard test blocks.

Probes characteristics

Photo Probe Type

Length, mm

Diameter, mm

Standard probe Type D-E for hardness tester TKM359CE «D» 138 21
Solving of main hardness testing tasks with surface roughness less than 3.2 Ra
«E» 138 21
Probe with polycrystalline indenter made of cubic boron nitride to test materials with high hardness
Special probe Type G for Hardness tester TKM‑359CE «G» 200 29
Hardness testing of high structure inhomogeneity items with surface roughness more than 7.2 Ra

ATTENTION! If you buy only probe Type-D, the Hardness tester TKM‑359CE should be sent to the retrofit and alignment.

We also recommend to buy UCI Hardness tester TKM‑459CE

Requirements to controlled item:

  • Items heavier than 5 kg and thicker than 6 mm need no additional preparation.
  • Hard items (eg tubes) with awaited hardness from 90 to 250 HB and thicker than 4 mm need no additional preparation.
  • Other items should be fixed on a support plate by fixing paste.
  • Roughness of controlled surface providing best measurement accuracy depends on a probe.

Hardness testers modes

Measurement mode  Readings  Using
By basic scales Basic hardness units (HRC, HB, HV)  Hardness testing of the bulk of products
By additional calibrations to basic scales By HRA, HRB, HSD scales and ultimate tensile strength Hardness testing of high-alloy steels, special cast iron and nonferrous metals
By additional scales  Scales are programmed by the user Special problems solving

The parameters of the statistical processing of measurements

- Maximum, minimum, mean value, standard deviation from the mean.

- The average deviation from the values set by a user, results are more/less the values, the maximum deviation in the large/smaller side of the value.

- Number of results outside the upper/lower limit of range (user specified), maximum deviation from the upper/lower border.

- Automatic garbage results, incorrect measurement.

- Comparison of results of measurements in the series (the comparison charts on the display of the hardness tester).

Characteristic Values
Accuracy  3%
Calibration error with the first rate test blocks:
Rockwell  1.5 HRC
Brinell 10 HB
Vickers 12 HV
Spot diameter on the item surface for probe positioning From 7 mm
Quantity of possible additional calibrations of scales 5 for every scale
Quantity of additional scales 3
Duration of one measurement 2 seconds
Quantity of measurements for average reading calculation 1-99
Memory capacity, readings 12 400
Maximum quantity of name units of readings generated in memory 100
Quantity of algorithms for known to be false readings during average value calculation 3
PC Connection USB
Power Supply LI-ion accumulator
Dimensions of hardness tester electronic unit 121x69x41 mm
Weight of electronic unit 0.3 kg
Weight of D-probe 0.15 kg
Operating temperature range -15…+35 0C
1 year from the day of delivery


Elements Quantity
Electronic unit  1
Accumulator (pre-installed)   1
D-type probe 1
Connecting cable 1
Charger 1
PC cable 1
Soft case 1
Cuff to fix device on arm  1
Bag for carrying and storing 1

ACCESSORIESSpecial head “Z-359”-TKM‑359CE Replaceable_probes-G-E-for_Hardness_tester_TKM‑359CE

  1. Replaceable probes of different construction and impact force.
  2. Special head “Z-359” for easier probe positioning on complex surfaces.
  3. Connection cables.



Description Hardness tester TKM‑359CE
Hardness tester TKM‑359CE (Leeb method) Download - Description Hardness tester TKM‑359CE


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