Dental Stone Compression Testing Machine，Dental Stone Bending Strength Test

**Execution Standards**:  

YY/T 0462-2018 “Dentistry – Gypsum Products”  

YY/T 0523-2023 “Dentistry – Gypsum-Bonded Investment Materials”  

**Main Tests**:  

Compression and bending strengths of:  

- Type I Impression Plaster  

- Type II Dental Stone  

- Type III Model Plaster  

- Type IV Model Artificial Stone  

- Type V High-Strength Artificial Stone  

**Technical Specifications**  

1. Maximum test force: 500 N  

2. Load cell capacity: 50 kg (500 N)  

3. Accuracy grade: 0.5  

4. Force range: 1 % – 100 % FS  

5. Force resolution: ±1/500,000 of max force, no subdivision, constant  

6. Force control rate: 0.001 % – 10 % FS/s  

7. Force-rate accuracy: ±0.2 % (0.001–1 % FS/s); ±0.5 % (1–10 % FS/s)  

8. Force hold accuracy: ±0.002 % FS  

9. Deformation range: 0.5 % – 100 % FS  

10. Constant-force/position/deformation range: 0.2 % – 100 % FS  

11. Constant-mode accuracy: ±1 % (<10 % FS/s set); ±0.5 % (≥10 % FS/s set)  

12. Deformation resolution: ±1/500,000 of max deformation, constant  

13. Deformation control rate: 0.001 % – 10 % FS/s  

14. Deformation-rate accuracy: ±0.2 % (0.001–1 % FS/s); ±0.5 % (1–10 % FS/s)  

15. Deformation hold accuracy: ±0.02 % FS  

16. Displacement resolution: 0.01 mm  

17. Displacement accuracy: ±0.2 %  

18. Displacement control rate: 0.01 – 500 mm/min  

19. Displacement-rate accuracy: ±0.2 %  

20. Displacement hold accuracy: zero error  

21. Test space: >900 mm effective tension/compression  

22. Control: full PC automatic  

23. Safety: over-current, over-voltage, under-current, under-voltage, phase-loss, phase-error, leakage; triple travel protection; emergency stop  

24. Power: 220 V, 50 Hz  

25. Power consumption: 1 kW  

28. Frame: single-column, dual-space, compact, smooth running  

29. Environment: ?10 °C – 40 °C, RH 10 % – 95 %  

30. Dimensions: 520 × 460 × 1650 mm