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Primary mechanical properties of different types of steel fibers.
| Type | Length (mm) | Diameter (mm) | Length to Diameter Ratio | Bending Performance | Elasticity Modulus (GPa) | Tensile Strength (MPa) |
|---|---|---|---|---|---|---|
| Wavy steel fiber | 35 | 0.87 | 40 | >90 | 210 | 425 |
| Ultrashort ultrafine steel fiber | 6 | 0.2 | 30 | >90 | 240 | 880 |
| Polypropylene flexible fiber | 12 | 0.03 | 400 | >90 | 3.85 | 500 |
