Materials / Compare
Nickel Inconel 718 vs. Solder SAC305
Compare Nickel Inconel 718 vs. Solder SAC305 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 | 1,207MPasourcetypical, 1.0 in. hot-rolled bar, 0.2% offset | 22MPasourcetypical |
| Ultimate tensile strength | 1,389MPasourcetypical, 1.0 in. bar | 39.6MPasourcetypical |
| Elongation at break | 20%sourcetypical, 1.0 in. bar | 49%sourcetypical |
| Young's modulus (stiffness) | 200GPasourcetypical, 21 °C, annealed + aged | 6.9GPasourcetypical, temperature and strain rate not stated |
| Density | 8,221kg/m³sourcenominal, annealed and aged | 7,350kg/m³sourcetypical |
| Strength to weight | 147kN·m/kg49.1x higher | 2.99kN·m/kg |
| Stiffness to weight | 24.3MN·m/kg25.9x higher | 0.939MN·m/kg |
| Poisson's ratio | 0.294sourcetypical, 21 °C, annealed + aged | 0.35sourcetypical |
| Shear modulus | 77.3GPa30.2x stiffer in shear | 2.56GPa |
| Bulk modulus | 162GPa | 7.67GPa |
| Speed of sound | 4,932m/s | 969m/s |
| Thermal | ||
| Thermal conductivity | 11.4W/m·Ksourcetypical, 21 °C, annealed + aged (calculated from resistivity per footnote a) | 61W/m·Ksourcetypical, temperature not stated |
| Thermal expansion | 13.2µm/m·Ksourcetypical, mean 21-93 °C, annealed + aged | 21.9µm/m·Ksourcemean, 20-100 °C (MacDermid Alpha) |
| 100 mm part over a 50 °C swing | 66µm growth1.66x less | 110µm growth |
| Specific heat | 435J/kg·Ksourcetypical, 21 °C | 232J/kg·Ksourcetypical (MacDermid Alpha) |
| Heats up and cools (diffusivity) | 3.19mm²/s | 35.8mm²/s11.2x faster |
| Thermal shock resistance | 3,680W/m | 5,773W/m1.57x more resistant |
| Melting point | 1,260–1,336°Csourcemelting range | 217–220°Csourcesolidus-liquidus |
| Max service temperature | 704°Csourceupper use temperature stated by producer | not sourced |
| Values for | INCONEL alloy 718, standard grade, 1750 °F/1 hr anneal + 1325 °F/8 hr F.C. to 1150 °F aged; Special Metals bulletin SMC-045 typical values | SAC305 (Sn96.5Ag3.0Cu0.5) solder alloy, bulk; Indium Corporation Indalloy 256 (SAC305) for Preforms product data sheet (Form No. 100346 R0, 2024), selected properties, test temperature not stated; expansion and specific heat from MacDermid Alpha VACULOY SAC TDS (06 September 2023). |
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 Nickel Inconel 718 stronger than Solder SAC305?
Nickel Inconel 718 is stronger: its yield strength is 1,207 MPa against 22 MPa for Solder SAC305 (54.9x).
Which is lighter, Nickel Inconel 718 or Solder SAC305?
Solder SAC305 is lighter: 7,350 kg/m³ against 8,221 kg/m³ for Nickel Inconel 718.
Which is stiffer, Nickel Inconel 718 or Solder SAC305?
Nickel Inconel 718 is stiffer: Young's modulus 200 GPa against 6.9 GPa for Solder SAC305, so the same part in Nickel Inconel 718 deflects less under the same load.
Which is lighter for the same job, Nickel Inconel 718 or Solder SAC305?
For the same stiffness or strength: Nickel Inconel 718 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 | Nickel Inconel 718 | Solder SAC305 |
|---|---|---|
| Stiff rod or tie (tension) | lighter | 25.9x heavier |
| Stiff beam (bending) | lighter | 4.81x heavier |
| Stiff panel or plate | lighter | 2.75x heavier |
| Strong rod or tie | lighter | 49.1x heavier |
| Strong beam | lighter | 12.9x heavier |
| Strong panel or plate | lighter | 6.62x heavier |
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, Nickel Inconel 718 or Solder SAC305?
Solder SAC305 conducts heat better: 61 W/m·K against 11.4 W/m·K for Nickel Inconel 718.
Which expands less with temperature?
Nickel Inconel 718 expands less: 13.2 µm/m·K against 21.9 µm/m·K for Solder SAC305.