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K94200 Alloy vs. 2011 Aluminum

K94200 alloy belongs to the iron alloys classification, while 2011 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 2011 aluminum.

UNS K94200 (FeNi42, 1.3917) Low Expansion Alloy2011 (AlCu6BiPb, 3.1655, FC1, A92011) Aluminum
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
71
Elongation at Break, % 5.0 to 32
8.5 to 18
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 54
27
Shear Strength, MPa 330 to 410
190 to 250
Tensile Strength: Ultimate (UTS), MPa 500 to 710
310 to 420
Tensile Strength: Yield (Proof), MPa 270 to 650
140 to 310

Thermal Properties

Melting Onset (Solidus), °C 1440
540
Specific Heat Capacity, J/kg-K 500
870
Thermal Conductivity, W/m-K 15
140 to 170
Thermal Expansion, µm/m-K 5.0
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.7
35 to 45
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
100 to 130

Otherwise Unclassified Properties

Density, g/cm3 8.2
3.1

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 130
29 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 1460
140 to 680
Stiffness to Weight: Axial, points 9.8
13
Stiffness to Weight: Bending, points 21
44
Strength to Weight: Axial, points 17 to 24
27 to 37
Strength to Weight: Bending, points 17 to 22
32 to 40
Thermal Diffusivity, mm2/s 3.7
51 to 64
Thermal Shock Resistance, points 49 to 70
14 to 19