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EN AC-51500 Aluminum vs. AISI 442 Stainless Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while AISI 442 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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-51500 aluminum and the bottom bar is AISI 442 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
23
Fatigue Strength, MPa 120
210
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 280
580
Tensile Strength: Yield (Proof), MPa 160
310

Thermal Properties

Latent Heat of Fusion, J/g 430
290
Maximum Temperature: Mechanical, °C 170
960
Melting Completion (Liquidus), °C 630
1430
Melting Onset (Solidus), °C 590
1390
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
22
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.7
Electrical Conductivity: Equal Weight (Specific), % IACS 88
3.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.0
2.3
Embodied Energy, MJ/kg 150
32
Embodied Water, L/kg 1150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
21
Strength to Weight: Bending, points 36
20
Thermal Diffusivity, mm2/s 49
5.8
Thermal Shock Resistance, points 13
20

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
18 to 23
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
74.1 to 82
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Nickel (Ni), % 0
0 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.6
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0