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Solder SAC305 vs. Titanium

Compare Solder SAC305 vs. Titanium strength, stiffness, weight and thermal properties.

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Solder SAC305Cast
TitaniumWrought
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Mechanical
Yield strength22MPasourcetypical885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset
Ultimate tensile strength39.6MPasourcetypical940MPasourcetypical, plate, annealed
Elongation at break49%sourcetypical16%sourcetypical, in 2 in., plate annealed
Young's modulus (stiffness)6.9GPasourcetypical, temperature and strain rate not stated107–122GPasourcetypical range, 20 °C
Density7,350kg/m³sourcetypical4,430kg/m³sourcenominal
Strength to weight2.99kN·m/kg200kN·m/kg66.7x higher
Stiffness to weight0.939MN·m/kg25.8MN·m/kg27.5x higher
Poisson's ratio0.35sourcetypical0.342sourcemean of TIMET measurements
Shear modulus2.56GPa42.7GPa16.7x stiffer in shear
Bulk modulus7.67GPa121GPa
Speed of sound969m/s5,084m/s
Thermal
Thermal conductivity61W/m·Ksourcetypical, temperature not stated6.6W/m·Ksourcetypical, 20 °C, mill annealed
Thermal expansion21.9µm/m·Ksourcemean, 20-100 °C (MacDermid Alpha)9µm/m·Ksourcetypical, mean 0-100 °C
100 mm part over a 50 °C swing110µm growth45µm growth2.43x less
Specific heat232J/kg·Ksourcetypical (MacDermid Alpha)580J/kg·Ksourcetypical, 20 °C
Heats up and cools (diffusivity)35.8mm²/s13.9x faster2.57mm²/s
Thermal shock resistance5,773W/m1.55x more resistant3,730W/m
Melting point217–220°Csourcesolidus-liquidus1,630–1,650°Csourcemelting range
Max service temperaturenot sourced400°Csourceupper recommended use temperature
Values forSAC305 (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).TIMETAL 6-4 (Ti-6Al-4V Grade 5) annealed plate typical (TIMET properties manual) + TIMET datasheet TMC-0150 physical properties

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 Solder SAC305 stronger than Titanium?

Titanium is stronger: its yield strength is 885 MPa against 22 MPa for Solder SAC305 (40.2x).

Which is lighter, Solder SAC305 or Titanium?

Titanium is lighter: 4,430 kg/m³ against 7,350 kg/m³ for Solder SAC305.

Which is stiffer, Solder SAC305 or Titanium?

Titanium is stiffer: Young's modulus 115 GPa against 6.9 GPa for Solder SAC305, so the same part in Titanium deflects less under the same load.

Which is lighter for the same job, Solder SAC305 or Titanium?

For the same stiffness or strength: Titanium 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 beSolder SAC305Titanium
Stiff rod or tie (tension)27.5x heavierlighter
Stiff beam (bending)6.76x heavierlighter
Stiff panel or plate4.23x heavierlighter
Strong rod or tie66.7x heavierlighter
Strong beam19.5x heavierlighter
Strong panel or plate10.5x heavierlighter

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, Solder SAC305 or Titanium?

Solder SAC305 conducts heat better: 61 W/m·K against 6.6 W/m·K for Titanium.

Which expands less with temperature?

Titanium expands less: 9 µm/m·K against 21.9 µm/m·K for Solder SAC305.

Among 72 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelPCB Laminate FR-4SiliconCeramic Alumina 96%Ceramic Aluminum NitrideAluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DPlastic PBT GF30Plastic PPS GF40Plastic LCP GF30Solder SAC305Titanium
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronSteel AISI 1018Stainless Steel 304Stainless Steel 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless Steel 303Stainless Steel 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Magnesium AZ31B-H24Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS AlSi10Mg AluminumDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickPCB Laminate FR-4SiliconCeramic Alumina 96%Aluminum A380Aluminum 6063-T6Aluminum 1100-OAluminum ADC12Magnesium AZ91DPlastic PBT GF30Plastic PPS GF40Plastic LCP GF30Solder SAC305Titanium
Strength against density

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