7075 Aluminum vs. Grade A Lava

7075 aluminum and grade A lava belong to fundamentally different material chemistries. 7075 aluminum is a metal, while grade A lava is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 9 material properties with values for both materials. Properties with values for just one material (28, in this case) are not shown.

For each property being compared, the top bar is 7075 aluminum and the bottom bar is grade A lava.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		3.0
Density, g/cm³		2.3 to 2.5

Maximum Temperature: Mechanical, °C		200
Maximum Temperature: Mechanical, °C		650 to 1130

Specific Heat Capacity, J/kg-K		870
Specific Heat Capacity, J/kg-K		840

Strength to Weight: Axial, points		22 to 54
Strength to Weight: Axial, points		0.77 to 2.5

Strength to Weight: Bending, points		28 to 52
Strength to Weight: Bending, points		3.2 to 7.3

Tensile Strength: Ultimate (UTS), MPa		240 to 590
Tensile Strength: Ultimate (UTS), MPa		6.9 to 21

Thermal Conductivity, W/m-K		130
Thermal Conductivity, W/m-K		2.0

Thermal Diffusivity, mm²/s		50
Thermal Diffusivity, mm²/s		1.0

Thermal Expansion, µm/m-K		23
Thermal Expansion, µm/m-K		2.5 to 3.3

7075 Aluminum vs. Grade A Lava

Material Properties

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