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S44700 Stainless Steel vs. EN AC-51200 Aluminum

S44700 stainless steel belongs to the iron alloys classification, while EN AC-51200 aluminum belongs to the aluminum alloys. There are 26 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 S44700 stainless steel and the bottom bar is EN AC-51200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
80
Elastic (Young's, Tensile) Modulus, GPa 210
67
Elongation at Break, % 23
1.1
Fatigue Strength, MPa 300
100
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 82
25
Tensile Strength: Ultimate (UTS), MPa 600
220
Tensile Strength: Yield (Proof), MPa 450
150

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 480
910
Thermal Expansion, µm/m-K 11
23

Otherwise Unclassified Properties

Base Metal Price, % relative 18
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 3.6
9.6
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 480
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 21
24
Strength to Weight: Bending, points 20
31
Thermal Shock Resistance, points 19
10

Alloy Composition

Aluminum (Al), % 0
84.5 to 92
Carbon (C), % 0 to 0.010
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 64.9 to 68.5
0 to 1.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
8.0 to 10.5
Manganese (Mn), % 0 to 0.3
0 to 0.55
Molybdenum (Mo), % 3.5 to 4.2
0
Nickel (Ni), % 0 to 0.15
0 to 0.1
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.2
0 to 2.5
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15