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EN AC-21100 Aluminum vs. K94200 Alloy

EN AC-21100 aluminum belongs to the aluminum alloys classification, while K94200 alloy belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 EN AC-21100 aluminum and the bottom bar is K94200 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
140
Elongation at Break, % 6.2 to 7.3
5.0 to 32
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
54
Tensile Strength: Ultimate (UTS), MPa 340 to 350
500 to 710
Tensile Strength: Yield (Proof), MPa 210 to 240
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 550
1440
Specific Heat Capacity, J/kg-K 880
500
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 100
3.0

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 46
21
Strength to Weight: Axial, points 31 to 33
17 to 24
Strength to Weight: Bending, points 36 to 37
17 to 22
Thermal Diffusivity, mm2/s 48
3.7
Thermal Shock Resistance, points 15
49 to 70