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7475 Aluminum vs. K94200 Alloy

7475 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 (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 7475 aluminum and the bottom bar is K94200 alloy.

7475 (AlZn5.5MgCu(A)) AluminumUNS K94200 (FeNi42, 1.3917) Low Expansion Alloy
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
140
Elongation at Break, % 10 to 12
5.0 to 32
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 26
54
Shear Strength, MPa 320 to 350
330 to 410
Tensile Strength: Ultimate (UTS), MPa 530 to 590
500 to 710
Tensile Strength: Yield (Proof), MPa 440 to 520
270 to 650

Thermal Properties

Melting Onset (Solidus), °C 480
1440
Specific Heat Capacity, J/kg-K 870
500
Thermal Conductivity, W/m-K 140 to 160
15
Thermal Expansion, µm/m-K 23
5.0

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33 to 42
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 98 to 120
3.0

Otherwise Unclassified Properties

Density, g/cm3 3.0
8.2

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53 to 68
35 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 1390 to 1920
250 to 1460
Stiffness to Weight: Axial, points 13
9.8
Stiffness to Weight: Bending, points 46
21
Strength to Weight: Axial, points 49 to 55
17 to 24
Strength to Weight: Bending, points 48 to 52
17 to 22
Thermal Diffusivity, mm2/s 53 to 63
3.7
Thermal Shock Resistance, points 23 to 26
49 to 70