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201.0 Aluminum vs. K94200 Alloy

201.0 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 (12, 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 201.0 aluminum and the bottom bar is K94200 alloy.

201.0 (CQ51A, A02010) Cast AluminumUNS K94200 (FeNi42, 1.3917) Low Expansion Alloy
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
140
Elongation at Break, % 4.4 to 20
5.0 to 32
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 27
54
Shear Strength, MPa 290
330 to 410
Tensile Strength: Ultimate (UTS), MPa 370 to 470
500 to 710
Tensile Strength: Yield (Proof), MPa 220 to 400
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 570
1440
Specific Heat Capacity, J/kg-K 870
500
Thermal Conductivity, W/m-K 120
15
Thermal Expansion, µm/m-K 19
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30 to 33
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 87 to 97
3.0

Otherwise Unclassified Properties

Density, g/cm3 3.1
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 63
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 330 to 1160
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 45
21
Strength to Weight: Axial, points 33 to 42
17 to 24
Strength to Weight: Bending, points 37 to 44
17 to 22
Thermal Diffusivity, mm2/s 45
3.7
Thermal Shock Resistance, points 19 to 25
49 to 70