The Struers Duramin-4 M1 M2 manual provides operating instructions, load ranges, and specifications for Vickers, Knoop, and Brinell hardness testing.
The Duramin-4 is an entry‑level micro and macro hardness tester that can perform Vickers, Knoop and (for the M2 model) Brinell tests. It combines manual and automatic features such as a 6‑position turret, manual XY stage or anvil, and manual Z‑axis.
Two load ranges are offered: 10 gf – 2 kgf for the M1 and 1 kgf – 62.5 kgf for the M2. The instrument includes anti‑collision protection, statistics software, data export, a touch‑screen interface and USB 2.0 connectivity.
| Load range (M1) | 10 gf - 2 kgf |
|---|---|
| Load range (M2) | 1 kgf - 62.5 kgf |
| Vickers capability | Yes |
| Knoop capability | Yes |
| Brinell capability (M2) | Yes |
| Motorized turret | Yes |
The M1 model offers a load range of 10 gf – 2 kgf, while the M2 model offers 1 kgf – 62.5 kgf.
Only the M2 model provides Brinell capability.
The turret has six positions.