Portable Hand – Held Hardness Tester Model : ALP-1
Application for :
- Aluminum
- Aluminum Alloys
- Soft Metals
- Plastics
- Fiber Glass
Salient Features :
Portable : The ALP-1 is a small portable Hardness Tester having weight around 1 kg., suitable for testing the hardness of aluminum, aluminum alloys, copper, brass & other materials having hardness from 25 to 150 BHN (10 mm ball / 500 kg. Load)
Easy to Use : No experience required, can be used in any position. The hardness readings is indicated on the dial gauge which is divided into hundred graduations.
Testing : The ALP-1 is best suitable for testing homogeneous materials. For accurate & better results, the thickness of material should be minimum 1 mm thick & minimum 3 mm distance should be kept from the edge of specimen while taking the readings. The testing surface should be smooth. For testing the surface, simply exert a light pressure against the machine, so that spring loaded indenter will penetrate into the material.
Technical Specification :
Recommended sample sizes to Equalize the Variance of the Average |
|||
|---|---|---|---|
| Hardness Scale ALP-1 | Readings Variance | No of Readings | Variance of Average |
Homogeneous Material |
|||
| 20 | 2.47 | 9 | 0.27 |
| 30 | 2.20 | 8 | 0.28 |
| 40 | 1.93 | 7 | 0.27 |
| 50 | 1.66 | 6 | 0.28 |
| 60 | 1.39 | 5 | 0.28 |
| 70 | 1.12 | 4 | 0.28 |
| 80 | 0.85 | 3 | 0.28 |
Homogeneous Material |
|||
| 30 | 22.4 | 29 | 0.77 |
| 40 | 17.2 | 22 | 0.78 |
| 50 | 12.0 | 16 | 0.75 |
| 60 | 7.8 | 10 | 0.78 |
| 70 | 3.6 | 5 | 0.75 |