Both 3105-H14 aluminum and 3105-H24 aluminum are variants of the same material. They share alloy composition and many physical properties, but develop different mechanical properties as a result of different processing.

For each property being compared, the top bar is 3105-H14 aluminum and the bottom bar is 3105-H24 aluminum.

Mechanical Properties

Brinell Hardness		48
		47

Elastic (Young’s, Tensile) Modulus, GPa		69
		69

Elongation at Break, %		2.7
		5.6

Fatigue Strength, MPa		69
		74

Poisson’s Ratio		0.33
		0.33

Shear Modulus, GPa		26
		26

Shear Strength, MPa		110
		110

Tensile Strength: Ultimate (UTS), MPa		170
		170

Tensile Strength: Yield (Proof), MPa		150
		140

 

Thermal Properties

Latent Heat of Fusion, J/g		400
		400

Maximum Temperature: Mechanical, °C		180
		180

Melting Completion (Liquidus), °C		660
		660

Melting Onset (Solidus), °C		640
		640

Specific Heat Capacity, J/kg-K		900
		900

Thermal Conductivity, W/m-K		170
		170

Thermal Expansion, µm/m-K		24
		24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		44
		44

Electrical Conductivity: Equal Weight (Specific), % IACS		140
		140

Otherwise Unclassified Properties

Base Metal Price, % relative		9.5
		9.5

Calomel Potential, mV		-750
		-750

Density, g/cm3		2.8
		2.8

Embodied Carbon, kg CO2/kg material		8.2
		8.2

Embodied Energy, MJ/kg		150
		150

Embodied Water, L/kg		1180
		1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3		4.5
		9.1

Resilience: Unit (Modulus of Resilience), kJ/m3		160
		140

Stiffness to Weight: Axial, points		14
		14

Stiffness to Weight: Bending, points		50
		50

Strength to Weight: Axial, points		17
		18

Strength to Weight: Bending, points		25
		25

Thermal Diffusivity, m2/s		68
		68

Thermal Shock Resistance, points		7.5
		7.6