Materials / Compare
Copper C110 vs. DMLS 316L Stainless Steel
Compare Copper C110 vs. DMLS 316L Stainless Steel 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 | 69MPasourcetypical, 0.5% extension under load | 530MPasourcetypical, as manufactured, horizontal |
| Ultimate tensile strength | 221MPasourcetypical | 640MPasourcetypical, as manufactured, horizontal |
| Elongation at break | 55%sourcetypical, 1 in. rod | 40%sourcetypical at break, as manufactured, horizontal |
| Young's modulus (stiffness) | 117GPasourcetypical | 185GPasourcetypical, as built, horizontal (XY); EOSINT M280-400W / M290-400W, 316L_Surface 1.0, 20 µm (2014 sheet) |
| Density | 8,913kg/m³sourcenominal | 7,900kg/m³sourcepart density (ISO 3369, not labelled min or typical), EOS M 290, 40 µm FlexLine |
| Strength to weight | 7.74kN·m/kg | 67.1kN·m/kg8.67x higher |
| Stiffness to weight | 13.1MN·m/kg | 23.4MN·m/kg1.78x higher |
| Poisson's ratio | 0.34sourcereference value at room temperature (Wieland-K32 = Cu-ETP = C11000, rolled products) | 0.3sourcebase material: austenitic stainless steels incl. 1.4404 (316L), design value |
| Shear modulus | 43.7GPa | 71.2GPa1.63x stiffer in shear |
| Bulk modulus | 122GPa | 154GPa |
| Speed of sound | 3,626m/s | 4,839m/s |
| Thermal | ||
| Thermal conductivity | 391W/m·Ksourcetypical, 20 °C | 16.2W/m·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), at 100 °C |
| Thermal expansion | 16.9µm/m·Ksourcetypical, mean 20-100 °C | 15.7µm/m·Ksourcemean 25-100 °C, ASTM E228 |
| 100 mm part over a 50 °C swing | 84.5µm growth | 78.6µm growth8% less |
| Specific heat | 385J/kg·Ksourcetypical, 20 °C | 500J/kg·Ksourcebase material: wrought 316/316L (Cleveland-Cliffs), 0-100 °C |
| Heats up and cools (diffusivity) | 114mm²/s27.8x faster | 4.1mm²/s |
| Thermal shock resistance | 8,992W/m4.35x more resistant | 2,067W/m |
| Melting point | 1,065–1,083°Csourcesolidus-liquidus | not sourced |
| Values for | C11000 ETP copper, annealed to 0.050 mm grain size (OS050), 1 in. rod, copper.org typical values | EOS StainlessSteel 316L (powder 9011-0032), EOS M 290, ParameterSet 316L 20µm Surface M290/400W, as manufactured, horizontal; ISO 6892-1 |
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.
DMLS 316L Stainless Steel is 3D printed: its properties depend on build direction and print settings; these are typical values.
Questions
Is Copper C110 stronger than DMLS 316L Stainless Steel?
DMLS 316L Stainless Steel is stronger: its yield strength is 530 MPa against 69 MPa for Copper C110 (7.68x).
Which is lighter, Copper C110 or DMLS 316L Stainless Steel?
DMLS 316L Stainless Steel is lighter: 7,900 kg/m³ against 8,913 kg/m³ for Copper C110.
Which is stiffer, Copper C110 or DMLS 316L Stainless Steel?
DMLS 316L Stainless Steel is stiffer: Young's modulus 185 GPa against 117 GPa for Copper C110, so the same part in DMLS 316L Stainless Steel deflects less under the same load.
Which is lighter for the same job, Copper C110 or DMLS 316L Stainless Steel?
For the same stiffness or strength: DMLS 316L Stainless Steel is lighter for a stiff rod or tie (tension), stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.
| Part that must be | Copper C110 | DMLS 316L Stainless Steel |
|---|---|---|
| Stiff rod or tie (tension) | 1.78x heavier | lighter |
| Stiff beam (bending) | 42% heavier | lighter |
| Stiff panel or plate | 31% heavier | lighter |
| Strong rod or tie | 8.67x heavier | lighter |
| Strong beam | 4.39x heavier | lighter |
| Strong panel or plate | 3.13x heavier | lighter |
For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).
Which conducts heat better, Copper C110 or DMLS 316L Stainless Steel?
Copper C110 conducts heat better: 391 W/m·K against 16.2 W/m·K for DMLS 316L Stainless Steel.
Which expands less with temperature?
DMLS 316L Stainless Steel expands less: 15.7 µm/m·K against 16.9 µm/m·K for Copper C110.