D24 vs D30
D30 is 1.1 times as stiff as D24. It is 1.1 times as dense. Per unit mass they are about equally stiff (17.24 and 17.19 MJ/kg). Strength: f_m,k = 24 MPa for D24, f_m,k = 30 MPa for D30.
Side by side
ratio = D30 / D24 · log scale| Property | D24 | D30 | Unit | Ratio | ¼×1×4× |
|---|---|---|---|---|---|
| E₁ Modulus, direction 1 | 10 | 11 | GPa | 1.1× | |
| E₂ Modulus, direction 2 | 0.67 | 0.73 | GPa | 1.09× | |
| E₃ Modulus, direction 3 | 0.67 | 0.73 | GPa | 1.09× | |
| G₁₂ Shear modulus 1-2 | 0.63 | 0.69 | GPa | 1.1× | |
| G₁₃ Shear modulus 1-3 | 0.63 | 0.69 | GPa | 1.1× | |
| E₀,₀₅ Modulus parallel to grain, 5 % fractile | 8.4 | 9.2 | GPa | 1.1× | |
| ρ Density | 580 | 640 | kg/m³ | 1.1× | |
| ρ_k Density, characteristic (5 % fractile) | 485 | 530 | kg/m³ | 1.09× | |
| f_m,k Bending strength | 24 | 30 | MPa | 1.25× | |
| f_t,0,k Tension parallel to grain | 14 | 18 | MPa | 1.29× | |
| f_t,90,k Tension perpendicular to grain | 0.6 | 0.6 | MPa | 1× | |
| f_c,0,k Compression parallel to grain | 21 | 24 | MPa | 1.14× | |
| f_c,90,k Compression perpendicular to grain | 4.9 | 5.3 | MPa | 1.08× | |
| f_v,k Shear strength | 3.7 | 3.9 | MPa | 1.05× | |
| E/ρ Specific stiffness E/ρ · derived | 17.24 | 17.19 | MJ/kg | 0.997× | |
| c₀ Bar wave speed √(E/ρ) · derived | 4152 | 4146 | m/s | 0.998× | |
| f/ρ Specific strength f/ρ · derived | 41.38 | 46.88 | kJ/kg | 1.13× |
Values at the first thickness band or product form of each material (EN 338:2016; EN 338:2016). A minimum and a characteristic value are not the same kind of number — read the ratio as a guide. Each material's page lists every band and every source.