Materials / Compare
Stainless 17-4PH vs. Wood
Compare Stainless 17-4PH vs. Wood strength, stiffness, weight and thermal properties.
| Try it on a partA bracket to run stress or thermal on, free in your browser | Open in LessCAD | Open in LessCAD |
|---|---|---|
| Mechanical | ||
| Yield strength | 1,275MPasourcetypical, transverse, sheet/strip | not given (tensile used) |
| Ultimate tensile strength | 1,379MPasourcetypical, transverse, sheet/strip | 99MPasourcemodulus of rupture (no direct tensile value) |
| Compressive strength | not sourced | 46.6MPasourcecompression parallel to grain (maximum crushing strength), 12% MC |
| Flexural strength | not sourced | 99MPasourcemodulus of rupture (static bending), 12% MC |
| Elongation at break | 9%sourcetypical, transverse, in 2 in. (50.8 mm) | not sourced |
| Young's modulus (stiffness) | 197GPasourceH 900 | 12.5GPasourcebending MOE, parallel to grain |
| Density | 7,800kg/m³sourceH 900 | not sourced |
| Strength to weight | 163kN·m/kg | not sourced |
| Stiffness to weight | 25.3MN·m/kg | not sourced |
| Poisson's ratio | 0.272sourceH 900 (column) | 0.35sourcemu_LR (red oak group, ~12% MC) |
| Shear modulus | 77.4GPa16.7x stiffer in shear | 4.63GPa |
| Bulk modulus | 144GPa | 13.9GPa |
| Speed of sound | 5,026m/s | not sourced |
| Thermal | ||
| Thermal conductivity | 17.9W/m·Ksourceat 149 °C (300 °F), H 900 | 0.18W/m·Ksourceacross grain, 12% MC (Table 4-7, approximate) |
| Thermal expansion | 10.8µm/m·Ksourcemean, 21–93 °C (70–200 °F), H 900 | 3.1–4.5µm/m·Ksourceparallel to grain, ovendry wood, range across species |
| 100 mm part over a 50 °C swing | 54µm growth | 19µm growth2.84x less |
| Specific heat | 460J/kg·Ksourcemean, 0–100 °C, H 900 | 1,700J/kg·Ksourcesolid wood (all species), 12% MC, 27 C |
| Heats up and cools (diffusivity) | 4.99mm²/s | not sourced |
| Thermal shock resistance | 7,809W/m32x more resistant | 244W/m |
| Max service temperature | 316°Csourcestrength-retention limit (not oxidation) | not sourced |
| Values for | Cleveland-Cliffs 17-4 PH, Condition H 900, sheet/strip, transverse (Product Data Bulletin, May 2021) | Northern red oak (Quercus rubra), clear straight-grained specimens at 12% MC, parallel to grain unless stated; USDA FPL Wood Handbook FPL-GTR-282 (2021) Ch. 4 and Ch. 5 |
Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.
Questions
Is Stainless 17-4PH stronger than Wood?
Stainless 17-4PH is stronger: its yield strength is 1,275 MPa against tensile strength 99 MPa for Wood (12.9x).
Which is stiffer, Stainless 17-4PH or Wood?
Stainless 17-4PH is stiffer: Young's modulus 197 GPa against 12.5 GPa for Wood, so the same part in Stainless 17-4PH deflects less under the same load.
Which conducts heat better, Stainless 17-4PH or Wood?
Stainless 17-4PH conducts heat better: 17.9 W/m·K against 0.18 W/m·K for Wood.
Which expands less with temperature?
Wood expands less: 3.8 µm/m·K against 10.8 µm/m·K for Stainless 17-4PH.