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NDT1 KRAFT Ltd.

KT-C

Product Description

Purpose
Small sized device with set of exchangeable transducers designated for hardness measurement and tensile strength σ of wide range of materials.
According to operating principle the device carry out the following measurements methods:
— dynamic method (Leeb method) in accordance with ASTM A956 standard (ISO 16859-1);
— UCI (ultrasonic contact impedance) method;
— static method of hardness measurement in accordance with ASTM B724 standard;
— hardness measurement method according to Shore A in accordance with EN ISO 868 (DIN 53505, ASTM D2240).

Features
— the first device that comprises 4 measurement methods, universal instrument for hardness determination of metals and plastics;
— wide range of measuring transducers and accessories for control of products of various shapes and dimensions;
— colour 2.4’’ display with built-in Li-Ion rechargeable battery;
— shock-proof ergonomic body with rubberized corners;
— position of transducer in relation to the horizon does not influence measurement results;
— possibility of application in both laboratory and manufacturing conditions;
— possibility of quick view of statistics in measuring process with averaging and by groups stored in device memory;
— possibility of control with set value limits;
— measurement results can be stored in device memory for further transfer into PC using USB 2.0 channel for storage, statistical processing and documentation with use of supplied software.

Basic technical characteristics

Hardness scales HRC, HB, HV, HRA, HRB, HSD, σ, HL
Basic measurement error*:
for Brinell, НВ 10
for Vickers, НV 12
for Shore, НSD 2
for Rockwell, НRC 1.5
for Leeb, % ± 3,0 % (100…500 HLD, 100…700 HLDL, 100… 600 HLC, 100…450 HLG)

± 3,0 % (500…700 HLD, 700…850 HLDL, 600…750 HLC, 450…600 HLG)

± 2,0 % (>700 HLD, >850 HLDL, >750 HLC, >600 HLG)

Tensile strength (σ), %, max 5
Number of measurements for average value calculation up to 99
Number of memory locations of the measurement results up to 1000 (can be stored into 99 groups)
Power supply built-in Li-Ion rechargeable battery 3.7-4.2 V, 1500-1700 mAh
Operating time, h 12
Working temperature range -30…+40 °С
Dimensions, mm 125 x 55 x 20
Weight, g 120

* These characteristics of measurement error are ensured on hardness test blocks with averaging from at least 10 measurements.

Delivery set
Measuring unit with transducers (quantity and modification depends on customer’s selection), сharging unit, mini-USB — USB type A cable for connection with computer, operating manual, CD with software for transfer and collection of measuring results, shock-proof case.

Guarantee period
— measuring unit — 3 years;
— transducers — 2 years.

Materials, hardness scales, measurement ranges

Materials Hardness scale Hardness measurement range
Leeb UCI Portable Rockwell
D, DC DL G C U-10N

U-50N

U-100N

SPR
Plain steel, low alloyed steel, cast steel HL 0-1000 0-1000 0-1000 0-1000
HB 75-654 81-646 90-646 81-694 75-654 75-654
HV 75-1000 80-950 81-1012 75-1000 75-1000
HRC 20-70 21-67 20-70 20-70 20-70
HRA 60-93 60-93
HRB 25-100 37-100 48-100 25-100
HSD 20-100 31-97 30-102 20-100
σ, MPa 370-1740 370-1740 370-1740 370-1740 370-1740
Tool steel HL 0-1000 0-1000 0-1000 0-1000
HV 80-900 80-905 98-942
HRC 20-70 21-67 20-67
Stainless steel HL 0-1000 0-1000 0-1000 0-1000
HB 85-655
HV 85-802
HRC 20-62
Grey cast iron HL 0-1000 0-1000 0-1000 0-1000
HB 90-664 92-326
Ductile iron HL 0-1000 0-1000 0-1000 0-1000
HB 95-686 127-364
Aluminium alloys HL 0-1000 0-1000 0-1000 0-1000
HB 19-165 20-187 19-168 21-167 19-165 75-450
HV 75-1000
HRB 24-85 24-85 28-86 23-85 24-85
Brass (copper and zinc alloy) HL 0-1000 0-1000 0-1000 0-1000
HB 40-173 40-173 75-450
HV 75-1000
HRB 14-95
Bronze (copper and aluminium alloy / copper and tin alloy) HL 0-1000 0-1000 0-1000 0-1000
HB 60-300 60-300 75-450
HV 75-1000
Forged copper

 

HL 0-1000 0-1000 0-1000 0-1000
HB 45-315 75-450
HV 75-1000

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Dynamic (Leeb) probes for KT-C Hardness Tester

D

Basic technical characteristics:
— dimensions, mm: Ø23 x 139;
— roughness Ra, µm: 3.2;
— min metal thickness, mm: 10.


C

Basic technical characteristics:
— dimensions, mm: Ø23 x 139;
— roughness Ra, µm: 1.6;
— min metal thickness, mm: 5.

DL

Basic technical characteristics:
— dimensions, mm: Ø23 x 255;
— roughness Ra, µm: 3.2;
— min metal thickness, mm: 10.

G

Basic technical characteristics:
— dimensions, mm: Ø32 x 248;
— roughness Ra, µm: 12.5;
— min metal thickness, mm: 70.


 Ultrasonic (UCI) probes for KT-C Hardness Tester

U-10N

Basic technical characteristics:
Pressure Force 9.8 N.
— min metal thickness, mm, 2;
— min radius for test, mm, 5;
— max surface roughness Ra, µm, 0,8;
— dimensions Ø26 x 140.

U-50N

Basic technical characteristics:
Pressure Force 49 N.
— min metal thickness, mm, 2;
— min radius for test, mm, 5;
— max surface roughness Ra, µm, 1,6;
— dimensions Ø26 x 140.

U-100N

Basic technical characteristics:
Pressure Force 98 N.
— min metal thickness, mm, 2;
— min radius for test, mm, 5;
— max surface roughness Ra, µm, 3,2;
— dimensions Ø26 x 140


 SPR (Portable Rockwell) probe for  KT-C Hardness Tester

S

The probe is designated to measure hardness of nonferrous metals and also steels with low and medium hardness and other materials. The device realizes direct method of hardness measurement in accordance with DIN 50157 and ASTM B724 standards. It is possible to measure hardness of surface layers, parts sensitive to scratches and polished surfaces and also thin products, profiles, pipes with wall thickness less than 2 mm. Material and dimensions of inspected objected do not influence measurement results.Static

Features:
— direct measurement method;
— possibility to measure hardness of a wide range of materials (nonferrous metals and alloys, steels, plastics) without preliminary calibration;Static_3
— absence of thickness influence (from 2 mm) and weight influence of inspected object on measurement results;
— possibility to carry out measurements with set limits.

Basic technical characteristics:
— indentation depth measurement error, µ: ± 0,3 (ASTM E18-03) ;
— load:

  • preliminary, N: 12;
  • preliminary and main load, N: 49;

— diamond indenter – truncated cone:

  • angle of lateral side, degree: 100 ± 0,5;
  • diameter of the upper base, µm: 60 ± 5 ;

— Overall dimensions, mm: Ø53 х 104 ;
— Weight, g: 300.