Standard: ISO 6507, ASTM E384
Vickers Hardness Tester
A Vickers Hardness Tester is a device used to measure the micro-hardness of materials by pressing a small, pointed indenter into the material's surface under a known force and measuring the resulting indentation size. Suitable for measuring small, thin specimens, surface infiltration, and plating after the treatment of parts.
In the Vickers hardness test, the indenter will have a diamond pyramid with a square base. The hardness of the material is determined by the size of the indentation left by the indenter, which is measured using a microscope. The Vickers hardness value is calculated based on the load applied and the surface area of the indentation.
This method of hardness testing is widely used as it provides precise and reliable measurements, especially for materials with very high or very low hardness values.
Features of Vickers Hardness Tester
- Adopts a closed-loop loading control system to improve the accuracy of the test force.
- New display screen LCD
- 10 times digital measurement microscope and 20 times objective lens
Technical Specifications
| Model Number |
TT 6004 X / 006 |
| Test Force |
0.3、0.5、1、2、2.5、3、5、10、20、30 kgf
2.94、4.90、9.80、19.6、24.5、29.4、49、98、196、294 N |
| Measurement Range |
5HV~3000HV |
| Test Mode |
HV / HK |
| Test Force Application |
Automatic (loading, dwelling, unloading) |
| Objective and Indenter Switching |
Automatic Turret |
| Objective Lens |
10X (Observe)，20X(measurement ) |
| Eyepiece |
10X micrometer |
| Total Magnification |
100X，200X |
| Dwelling Time |
1~60s |
| Date Output |
LCD Digital Display, Build-in Printer |
| Light Source |
Halogen Light Source |
| Max, Height of Specimen |
175 mm |
| Distance from Indenter to Machine Wall |
125 mm |
| Power |
220~240 V, 100 W, 0.2 A, 1 Ph, 50/60 Hz, 0.13 Hp |
| Dimension |
320(L) x 580(W) x 650(H) mm |
| Weight |
55 kg |
Unit Consists Of:
| Model Number |
Parts Description |
| TT 6004 X / 005 – P 001 |
Accessory Case |
| TT 6004 X / 005 – P 002 |
Micrometer Eyepiece |
| TT 6004 X / 005 – P 003 |
Small Flat Test Bench |
| TT 6004 X / 005 – P 004 |
Large Flat Test Bench |
| TT 6004 X / 005 – P 005 |
V-Shaped Test Bench |
| TT 6004 X / 005 – P 006 |
Vickers Hardness Block |
| TT 6004 X / 005 – P 007 |
Power Cable |
| TT 6004 X / 005 – P 008 |
Horizontal Adjusting Screw |
* 1 copy of instruction manual
Standards
ISO 6507 and ASTM E384 are international and American standards, that specify the procedures for Vickers hardness testing. They outline the test methods, equipment requirements, calibration procedures, and reporting formats necessary for conducting Vickers hardness tests on various materials. These standards ensure consistency and accuracy in hardness testing across different laboratories and industries.
Test Procedure of Vickers Hardness Tester
- Preparation: Ensure the surface of the material to be tested is clean and flat.
- Selection of Test Load: Choose an appropriate test load based on the expected hardness of the material. For microhardness testing, this load is typically in the range of a few grams to a few kilograms.
- Preparation of Indenter: Verify that the indenter (usually a diamond pyramid with a square base) is clean and in good condition.
- Application of Load: Apply the chosen test load to the material's surface using the Vickers hardness tester. This is typically done by lowering the indenter onto the surface with a controlled force.
- Indentation: Allow the indenter to dwell on the material's surface for a specified duration, usually a few seconds, to ensure proper indentation.
- Measurement of Indentation: Use a microscope or optical system integrated into the Vickers hardness tester to measure the diagonal lengths of the indentation left by the indenter.
- Calculation of Hardness: Calculate the Vickers hardness value using the formula: HV = 2×F/d2, where HV is the Vickers hardness value, F is the applied load, and d is the average of the two diagonal lengths of the indentation.
- Reporting: Record the test parameters, including the applied load, indentation dimensions, and calculated hardness value. Ensure compliance with relevant standards such as ISO 6507 or ASTM E384.
