| 3-Point Bending Strength (MPa) | |||
| Max Force F (N) | Support Span L (mm) | ||
| Specimen Width b (mm) | Thickness h (mm) | ||
| Bending Strength | |||
Introduction：
Standard formula for three-point bending test, Online three-point bending strength calculator for plastic & metal bending tests. Calculate flexural strength with span, force and specimen dimensions. The 3-point bending strength calculator is designed for flexural testing of plastics, ceramics, resins, and rigid materials. Based on the standard three-point bending formula, this tool calculates accurate flexural strength by inputting maximum breaking force, support span width, specimen width, and thickness. It fully complies with common ISO and GB bending test standards, helping laboratories obtain standardized bending stress results for quality control and material certification reports.