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AWS ERTi-1 vs. MDF

AWS ERTi-1 and MDF belong to fundamentally different material chemistries. AWS ERTi-1 is a metal, while MDF is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is AWS ERTi-1 and the bottom bar is MDF.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
4.0
Elongation at Break, % 24
0.5
Poisson's Ratio 0.32
0.25
Shear Modulus, GPa 41
2.5
Tensile Strength: Ultimate (UTS), MPa 240
18

Thermal Properties

Specific Heat Capacity, J/kg-K 540
1700
Thermal Conductivity, W/m-K 21
0.3
Thermal Expansion, µm/m-K 8.7
12

Otherwise Unclassified Properties

Density, g/cm3 4.5
0.75

Common Calculations

Stiffness to Weight: Axial, points 13
3.0
Stiffness to Weight: Bending, points 35
71
Strength to Weight: Axial, points 15
6.7
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 8.7
0.24
Thermal Shock Resistance, points 19
27