AGS-TECH Inc. stocks a comprehensive range of hardness testers including ROCKWELL, BRINELL, VICKERS, LEEB, KNOOP, MICROHARDNESS TESTERS, UNIVERSAL HARDNESS TESTER, PORTABLE HARDNESS TESTING INSTRUMENTS, optical systems and software for measurement, data acquisition and analysis, test blocks, indenters, anvils and related accessories. Some of the brand name hardness testers we sell are SADT, SINOAGE and MITECH.
One of the most common tests for assessing the mechanical properties of materials is the hardness test. Hardness of a material is its resistance to permanent indentation. One may also say hardness is a material’s resistance to scratching and to wear. There are several techniques to measure the hardness of materials using various geometries and materials. The measurement results are not absolute, they are more of a relative comparative indicator, because the results depend on the shape of the indenter and the applied load. Our portable hardness testers can generally run any hardness test listed above. They can be configured for particular geometric features and materials such as hole interiors, gear teeth…etc. Let us briefly go over the various hardness test methods.
BRINELL TEST : In this test, a steel or tungsten carbide ball with 10 mm diameter is pressed against a surface with a load of 500, 1500 or 3000 Kg force. Brinell hardness number is the ratio of the load to the curved area of indentation. A Brinell test leaves behind different types of impressions on the surface depending on the tested material’s condition. For example, on annealed materials a rounded profile is left behind whereas on cold-worked materials we observe a sharp profile. Tungsten carbide indenter balls are recommended for Brinell hardness numbers higher than 500. For harder workpiece materials a 1500 Kg or 3000 Kg load is recommended so that the impressions left behind are sufficiently large for accurate measurement. Because of the fact that impressions made by the same indenter at different loads are not geometrically similar, the Brinell hardness number depends on the load used. Therefore one should always note the load employed on the test results. Brinell test is well suited for materials between low to medium hardness.
ROCKWELL TEST : In this test the depth of penetration is measured. The indenter is pressed on the surface initially with a minor load and then a major load. The difference in the penetration debth is a measure of hardness. Several Rockwell hardness scales exist employing different loads, indenter materials and geometries. The Rockwell hardness number is read directly from a dial on the testing machine. For example, if the hardness number is 55 using the C scale, it is written as 55 HRC.
VICKERS TEST : Sometimes also referred to as the DIAMOND PYRAMID HARDNESS TEST, it uses a pyramid-shaped diamond indenter with loads ranging from 1 to 120 Kg. The Vickers hardness number is given by HV=1.854P / square L. The L here is the diagonal length of the diamond pyramid. The Vickers test gives basically the same hardness number regardless of the load. The Vickers test is suitable for testing materials with a wide range of hardness including very hard materials.
KNOOP TEST : In this test, we use a diamond indenter in the shape of an elongated pyramid and loads between 25g to 5 Kg. The Knoop hardness number is given as HK=14.2P / square L. Here the letter L is the length of the elongated diagonal. The size of indentations in Knoop tests is relatively small, in the range of 0.01 to 0.10 mm. Due to this small number surface preparation for the material is very important. Test results should cite the load applied because the hardness number obtained depends on the applied load. Because light loads are used, the Knoop test is considered a MICROHARDNESS TEST. The Knoop test is therefore suitable for very small, thin specimens, brittle materials such as gemstones, glass and carbides, and even for measuring the hardness of individual grains in a metal.
LEEB HARDNESS TEST : It is based on rebound technique measuring the Leeb hardness. It is an easy and industrially popular method. This portable method is mostly used for testing sufficiently large workpieces above 1 kg. An impact body with a hard metal test tip is propelled by spring force against the workpiece surface. When the impact body hits the workpiece, surface deformation takes place which will result in loss of kinetic energy. Velocity measurements reveal this loss in kinetic energy. When the impact body passes coil at a precise distance from the surface, a signal voltage is induced during the impact and rebound phases of the test. These voltages are proportional to the velocity. Using electronic signal processing one gets the Leeb hardness value from display.
Our PORTABLE HARDNESS TESTERS from SADT / HARTIP HARDNESS TESTER
SADT HARTIP2000/HARTIP2000 D&DL : This is an innovative portable Leeb hardness tester with newly patented technology, which makes HARTIP 2000 a universal angle (UA) impact direction hardness tester. There is no need to set up impact direction when taking measurements at any angle. Therefore, HARTIP 2000 offers a linear accuracy compared to the angle compensating method. HARTIP 2000 is also a cost saving hardness tester and has many other features. The HARTIP2000 DL is equipped with SADT unique D and DL 2-in-1 probe.
SADT HARTIP1800 Plus/1800 Plus D&DL : This device is an advanced state-of-the-art palm sized metal hardness tester with many new features. Using a patented technology, SADT HARTIP1800 Plus is a new generation product. It has a high accuracy of +/-2 HL (or 0.3% @HL800) with high contract OLED display and wide environmental temperature range (-40ºC~60ºC). Apart from huge memories in 400 blocks with 360k data, HARTIP1800 Plus can download measured data to PC and printout to mini-printer by USB port and wirelessly with internal blue-tooth module. The battery can be charged simply from USB port. It has a customer re-calibration and statics function. HARTIP 1800 plus D&DL is equipped with two-in-one probe. With unique two-in-one probe, HARTIP1800plus D&DL can convert between probe D and probe DL simply by changing impact body. It’s more economical than buying them individually. It has the same configuration with HARTIP1800 plus except two-in-one probe.
SADT HARTIP1800 Basic/1800 Basic D&DL : This is a basic model for HARTIP1800plus. With most of core functions of HARTIP1800 plus and a lower price, HARTIP1800 Basic is a good choice for the customer with limited budget. HARTIP1800 Basic also can be equipped with our unique D/DL two-in-one impact device.
SADT HARTIP 3000 : This is an advanced hand-held digital metal hardness tester with high accuracy, wide measurement range and ease of operation. It is suitable for testing the hardness of all metals especially on site for large structural and assembled components, which are widely used in the power, petrochemical, aerospace, automotive and machine building industries.
SADT HARTIP1500/HARTIP1000 : This is an integrated handheld metal hardness tester that combines impact device (probe) and processor into one unit. The size is much smaller than the standard impact device, which allows HARTIP 1500/1000 to meet not only normal measurement conditions, but also can take measurements at narrow spaces. HARTIP 1500/1000 is suitable for testing the hardness of almost all ferrous and nonferrous materials. With its new technology, its accuracy is improved to a higher level than the standard type. HARTIP 1500/1000 is one of the most economic hardness testers in its class.
BRINELL HARDNESS READING AUTOMATIC MEASURING SYSTEM / SADT HB SCALER : HB Scaler is an optical measuring system which can automatically measure the size of indentation from Brinell hardness tester and gives the Brinell hardness readings. All values and indentation images can be saved in PC. With the software, all values can be processed and printed out as a report.
Our BENCH HARDNESS TESTER products from SADT are:
SADT HR-150A ROCKWELL HARDNESS TESTER : The manually operated HR-150A Rockwell hardness tester is known for its perfection and ease of operation. This machine uses the standard preliminary test force of 10kgf and main loads of 60/100/150 kilograms while conforming to the international Rockwell standard. After each test, the HR-150A shows the Rockwell B or Rockwell C hardness value directly on the dial indicator. The preliminary test force has to be applied manually, followed by applying the main load by means of the lever at the right side of the hardness tester. After unloading, the dial indicates the requested hardness value directly with high accuracy and repeatability.
SADT HR-150DT MOTORIZED ROCKWELL HARDNESS TESTER : This series of hardness testers are recognized for their accuracy and ease of operation, function entirely conforming to the international Rockwell standard. Depending on the combination of indenter type and applied total test force, a unique symbol is given to each Rockwell scale. HR-150DT and HRM-45DT feature both specific Rockwell scales of HRC and HRB on a dial. The appropriate force should be adjusted manually, using the dial on the right side of the machine. After application of the preliminary force, the HR150DT and HRM-45DT will proceed with a fullly automated testing: loading, waiting, unloading, and at the end will display the hardness.
SADT HRS-150 DIGITAL ROCKWELL HARDNESS TESTER : The HRS-150 digital Rockwell hardness tester is designed for ease of use and safety of operation. It conforms with the international Rockwell standard. Depending on the combination of indenter type and applied total test force, a unique symbol is given to each Rockwell scale. The HRS-150 will automatically show your selection of a specific Rockwell scale on the LCD display, and will indicate which load is being used. The integrated autobrake mechanism allows the preliminary test force to be applied manually without the possibility of an error. After application of the preliminary force, the HRS-150 will proceed with a fully automatic test: loading, dwell time, unloading, and computation of the hardness value and its display. Connected to the included printer through an RS232 output, it’s possible to print out all results.
Our BENCH TYPE SUPERFICIAL ROCKWELL HARDNESS TESTER products from SADT are:
SADT HRM-45DT MOTORIZED SUPERFICIAL ROCKWELL HARDNESS TESTER : This series hardness testers are recognized for their accuracy and ease of operation, perform entirely conforming to the international Rockwell standard. Depending on the combination of indenter type and applied total test force, a unique symbol is given to each Rockwell scale. HR-150DT and HRM-45DT feature both of the specific Rockwell scales HRC and HRB on a dial. The appropriate force should be adjusted manually, using the dial on the right side of the machine. After application of the preliminary force, the HR150DT and HRM-45DT will proceed with a fullly automatic test process: loading, dwelling, unloading, and at the end will display the hardness.
SADT HRMS-45 SUPERFICIAL ROCKWELL HARDNESS TESTER : HRMS-45 Digital Superficial Rockwell Hardness Tester is a novel product integrating advanced mechanical and electronic technologies. The dual display of LCD and LED digital diodes, make it an upgraded product version of the standard type superficial Rockwell tester. It measures the hardness of ferrous, nonferrous metals and hard materials, carburized and nitrided layers, and other chemically treated layers. It is also used for the measurement of hardness of thin pieces.
SADT XHR-150 PLASTIC ROCKWELL HARDNESS TESTER : XHR-150 plastics Rockwell hardness tester adopts a motorized testing method, testing force can be loaded, kept at dwelling and unloaded automatically. Human error is minimized and easy to operate. It is used to measure hard plastics, hard rubbers, aluminum, tin, copper, soft steel, synthetic resins, tribologic materials, etc.
Our BENCH TYPE VICKERS HARDNESS TESTER products from SADT are:
SADT HVS-10/50 LOW LOAD VICKERS HARDNESS TESTER : This low load Vicker’s hardness tester with digital display is a new hi-tech product integrating mechanical and photoelectrical technologies. As a substitute for traditional small-load Vicker’s hardness testers, it features an easy operation and good reliability, which is specially designed for testing small, thin samples or parts after surface coating. Suitable for research institutes, industrial labs and QC departments, this is an ideal hardness testing instrument for research and measurement purposes. It offers integration of computer programming technology, high resolution optical measuring system and photoelectrical technique, soft key input, light source adjustment, selectable testing model, conversion tables, pressure-holding time, file number input and data saving functions. It has a big LCD screen to display the test model, test pressure, indention length, hardness values, pressure holding time and the numbers of tests. Offers also date recording, test results recording and data processing, printing output function, through an RS232 interface.
SADT HV-10/50 LOW LOAD VICKERS HARDNESS TESTER : These low load Vickers hardness testers are new hi-tech products integrating mechanical and photoelectrical technologies. These testers are specially designed for testing small and thin samples and parts after surface coating. Suitable for research institutes, industrial labs and QC departments. Key features and functions are microcomputer control, adjustment of light source via soft keys, adjustment of pressure holding time and LED/LCD display, its unique measurement conversion device and unique micro eyepiece one-time measurement readout device that ensures easy use and high accuracy.
SADT HV-30 VICKERS HARDNESS TESTER : The HV-30 model Vickers hardness tester is specially designed for testing small, thin samples and parts after surface coating. Suitable for research institutes, factory labs and QC departments, these are ideal hardness testing instruments for research and test purposes. Key features and functions are micro computer control, automatic loading and unloading mechanism, adjustment of lighting source via hardware, adjustment of pressure holding time (0~30s), unique measurement conversion device and unique micro eyepiece one-time measurement readout device, ensuring easy use and high accuracy.
Our BENCH TYPE MICRO HARDNESS TESTER products from SADT are:
SADT HV-1000 MICRO HARDNESS TESTER / HVS-1000 DIGITAL MICRO HARDNESS TESTER : This product is especially well suited for high precision hardness testing of small and thin samples such as sheet, foil, coatings, ceramic products and hardened layers. To ensure a satisfactory indentation, the HV1000 / HVS1000 features automatic loading and unloading operations, a very accurate loading mechanism and a robust lever system. The micro-computer controlled system ensures an absolutely precise hardness measurement with adjustable dwell time.
SADT DHV-1000 MICRO HARDNESS TESTER / DHV-1000Z DIGITAL VICKERS HARDNESS TESTER : These micro Vickers hardness testers made with a unique and precise design are able to produce a clearer indentation and hence a more accurate measurement. By means of a 20 × lens and a 40 × lens the instrument has a wider measurement field and a broader application range. Equipped with a digital microscope, on its LCD screen it shows the measuring methods, the test force, the indentation length, the hardness value, the dwell time of the test force as well as the number of the measurements. In addition, it is equipped with an interface linked to a digital camera and a CCD video camera. This tester is widely used for measuring ferrous metals, non-ferrous metals, IC thin sections, coatings, glass, ceramics, precious stones, quench hardened layers and more.
SADT DXHV-1000 DIGITAL MICRO HARDNESS TESTER : These micro Vickers hardness testers made with a unique and precise are able to produce a clearer indentation and hence more accurate measurements. By means of a 20 × lens and a 40 × lens the tester has a wider measurement field and a broader application range. With an automatically turning device ( the automatically turning turret ), the operation has become easier; and with a threaded interface, it can be linked to a digital camera and a CCD video camera. First the device lets the LCD touch screen to be used, thus allowing the operation to be more human controlled. The device has capabilities such as direct reading of the measurements, the easy change of the hardness scales, the saving of the data, the printing and the connection with the RS232 interface. This tester is widely used for measuring ferrous metals, non-ferrous metals, IC thin sections, coatings, glass, ceramics, precious stones; thin plastic sections, quench hardened layers and more.
Our BENCH TYPE BRINELL HARDNESS TESTER / MULTI-PURPOSE HARDNESS TESTER products from SADT are:
SADT HD9-45 SUPERFICIAL ROCKWELL & VICKERS OPTICAL HARDNESS TESTER : This device serves the purpose of measuring the hardness of ferrous, nonferrous metals, hard metals, carburized and nitrided layers and chemically treated layers and thin pieces.
SADT HBRVU-187.5 BRINELL ROCKWELL & VICKERS OPTICAL HARDNESS TESTER : This instrument is used for determining the Brinell, Rockwell and Vickers hardness of ferrous, nonferrous metals, hard metals, carburized layers and chemically treated layers. It can be used in plants, scientific & research institutes, laboratories and colleges.
SADT HBRV-187.5 BRINELL ROCKWELL & VICKERS HARDNESS TESTER (NOT OPTICAL) : This instrument is used for determining the Brinell, Rockwell and Vickers hardness of ferrous, non-ferrous metals, hard metals, carburized layers and chemically treated layers. It can be used in factories, scientific & research institutes, laboratories and colleges. It’s not an optical type hardness tester.
SADT HBE-3000A BRINELL HARDNESS TESTER : This automatic Brinell hardness tester features a wide measurement range up to 3000 Kgf with a high accuracy conforming to DIN 51225/1 standard. During the automatic test cycle the applied force will be controlled by a closed loop system guaranteeing a constant force on the work piece, conforming to DIN 50351 standard. The HBE-3000A comes completely with a reading microscope with enlargement factor 20X and a micrometer resolution of 0.005 mm.
SADT HBS-3000 DIGITAL BRINELL HARDNESS TESTER : This digital Brinell hardness tester is a new generation state-of-the-art device. It can be used to determine the Brinell hardness of ferrous and non-ferrous metals. The tester offers electronic auto loading, computer software programming, high power optical measurement, photosensor and other features. Each operational process and test result can be displayed on its large LCD screen. The test results can be printed. Device is suitable for manufacturing environments, colleges and scientific institutions.
SADT MHB-3000 DIGITAL ELECTRONIC BRINELL HARDNESS TESTER : This instrument is an integrated product combining optical, mechanical and electronic techniques, adopting a precise mechanical structure and computer controlled closed-circuit system. The instrument loads and unloads the testing force with its motor. Using a 0.5% accuracy compression sensor to feedback the information and the CPU to control, the instrument compensates automatically for the varying testing forces. Equipped with a digital micro eyepiece on the instrument, the length of indentation can be measured directly. All testing data such as the test method, the test force value, the length of test indentation, the hardness value and the dwell time of testing force can be shown on the LCD screen. There is no need to input the value of the diagonal length for the indentation and no need to look up the hardness value from the hardness table. Therefore the read data is more accurate and operation of this instrument is easier.
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