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K94200 Alloy vs. 2011A Aluminum

K94200 alloy belongs to the iron alloys classification, while 2011A aluminum belongs to the aluminum alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, 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 K94200 alloy and the bottom bar is 2011A aluminum.

UNS K94200 (FeNi42, 1.3917) Low Expansion Alloy2011A (AlCu6BiPb(A)) Aluminum
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
70
Elongation at Break, % 5.0 to 32
6.8 to 16
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 54
26
Shear Strength, MPa 330 to 410
190 to 250
Tensile Strength: Ultimate (UTS), MPa 500 to 710
310 to 410
Tensile Strength: Yield (Proof), MPa 270 to 650
140 to 310

Thermal Properties

Melting Onset (Solidus), °C 1440
550
Specific Heat Capacity, J/kg-K 500
870
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 5.0
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
33
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
96

Otherwise Unclassified Properties

Density, g/cm3 8.2
3.1

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 130
20 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 1460
140 to 670
Stiffness to Weight: Axial, points 9.8
13
Stiffness to Weight: Bending, points 21
44
Strength to Weight: Axial, points 17 to 24
28 to 37
Strength to Weight: Bending, points 17 to 22
33 to 40
Thermal Diffusivity, mm2/s 3.7
49
Thermal Shock Resistance, points 49 to 70
14 to 18