Aluminum 5052-H32 vs. Titanium Ti-6Al-4V

Compare Aluminum 5052-H32 vs. Titanium Ti-6Al-4V strength, stiffness, weight and thermal properties.

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Mechanical
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Yield strength	195MPasourcetypical, 0.2% offset	885MPasourcetypical, plate (>0.187 in), annealed, 0.2% offset
Ultimate tensile strength	230MPasourcetypical	940MPasourcetypical, plate, annealed
Elongation at break	12%sourcetypical	16%sourcetypical, in 2 in., plate annealed
Young's modulus (stiffness)	70GPasourcetypical	107–122GPasourcetypical range, 20 °C
Density	2,685kg/m³sourcenominal1.65x lighter	4,430kg/m³sourcenominal
Strength to weight	72.6kN·m/kg	200kN·m/kg2.75x higher
Stiffness to weight	26.1MN·m/kg	25.8MN·m/kg
Poisson's ratio	0.33sourcetypical (handbook physical constant)	0.342sourcemean of TIMET measurements
Shear modulus	26.3GPa	42.7GPa1.62x stiffer in shear
Bulk modulus	68.6GPa	121GPa
Speed of sound	5,106m/s	5,084m/s
Thermal
Thermal conductivity	138W/m·Ksourcebase material: 5052 in O temper (same alloy, annealed); Kaiser typical	6.6W/m·Ksourcetypical, 20 °C, mill annealed
Thermal expansion	23.8µm/m·Ksourcetypical, mean 20-100 °C	9µm/m·Ksourcetypical, mean 0-100 °C
100 mm part over a 50 °C swing	119µm growth	45µm growth2.64x less
Specific heat	963J/kg·Ksourceat 100 °C (212 °F); table covers O, H32, H34, H36, H38	580J/kg·Ksourcetypical, 20 °C
Heats up and cools (diffusivity)	53.4mm²/s20.8x faster	2.57mm²/s
Thermal shock resistance	10,822W/m2.9x more resistant	3,730W/m
Melting point	605–650°Csourcemelting range	1,630–1,650°Csourcemelting range
Max service temperature	not sourced	400°Csourceupper recommended use temperature
Values for	5052-H32, Kaiser Aluminum tube & pipe typical datasheet (mechanical, CTE, melting); MIL-HDBK-5J (Poisson, density, specific heat)	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 Aluminum 5052-H32 stronger than Titanium Ti-6Al-4V?

Titanium Ti-6Al-4V is stronger: its yield strength is 885 MPa against 195 MPa for Aluminum 5052-H32 (4.54x).

Which is lighter, Aluminum 5052-H32 or Titanium Ti-6Al-4V?

Aluminum 5052-H32 is lighter: 2,685 kg/m³ against 4,430 kg/m³ for Titanium Ti-6Al-4V.

Which is stiffer, Aluminum 5052-H32 or Titanium Ti-6Al-4V?

Titanium Ti-6Al-4V is stiffer: Young's modulus 115 GPa against 70 GPa for Aluminum 5052-H32, so the same part in Titanium Ti-6Al-4V deflects less under the same load.

Which is lighter for the same job, Aluminum 5052-H32 or Titanium Ti-6Al-4V?

For the same stiffness or strength: Aluminum 5052-H32 is lighter for a stiff beam (bending), stiff panel or plate; Titanium Ti-6Al-4V is lighter for a strong rod or tie, strong beam, strong panel or plate.

Part that must be	Aluminum 5052-H32	Titanium Ti-6Al-4V
Stiff rod or tie (tension)	about equal	about equal
Stiff beam (bending)	lighter	29% heavier
Stiff panel or plate	lighter	40% heavier
Strong rod or tie	2.75x heavier	lighter
Strong beam	1.66x heavier	lighter
Strong panel or plate	29% 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, Aluminum 5052-H32 or Titanium Ti-6Al-4V?

Aluminum 5052-H32 conducts heat better: 138 W/m·K against 6.6 W/m·K for Titanium Ti-6Al-4V.

Which expands less with temperature?

Titanium Ti-6Al-4V expands less: 9 µm/m·K against 23.8 µm/m·K for Aluminum 5052-H32.

Among 59 materials

Stiffness against density

Strength against density