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7020 Aluminum vs. K94200 Alloy

7020 aluminum belongs to the aluminum alloys classification, while K94200 alloy belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, 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 7020 aluminum and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
140
Elongation at Break, % 8.4 to 14
5.0 to 32
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 26
54
Shear Strength, MPa 110 to 230
330 to 410
Tensile Strength: Ultimate (UTS), MPa 190 to 390
500 to 710
Tensile Strength: Yield (Proof), MPa 120 to 310
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 610
1440
Specific Heat Capacity, J/kg-K 880
500
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 23
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
3.0

Otherwise Unclassified Properties

Density, g/cm3 2.9
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 47
21
Strength to Weight: Axial, points 18 to 37
17 to 24
Strength to Weight: Bending, points 25 to 41
17 to 22
Thermal Diffusivity, mm2/s 59
3.7
Thermal Shock Resistance, points 8.3 to 17
49 to 70

Comparable Variants