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EN 1.3956 Stainless Steel vs. EN AC-44300 Aluminum

EN 1.3956 stainless steel belongs to the iron alloys classification, while EN AC-44300 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (7, 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 1.3956 stainless steel and the bottom bar is EN AC-44300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 27
1.1
Fatigue Strength, MPa 240
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 650
270
Tensile Strength: Yield (Proof), MPa 330
150

Thermal Properties

Latent Heat of Fusion, J/g 300
570
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
590
Melting Onset (Solidus), °C 1380
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 13
21

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.5
Embodied Carbon, kg CO2/kg material 4.8
7.7
Embodied Energy, MJ/kg 68
140
Embodied Water, L/kg 180
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 270
150
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
55
Strength to Weight: Axial, points 23
29
Strength to Weight: Bending, points 21
36
Thermal Shock Resistance, points 18
13

Alloy Composition

Aluminum (Al), % 0
84.3 to 89.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 51.9 to 62.1
0 to 1.0
Manganese (Mn), % 4.0 to 6.0
0 to 0.55
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
10.5 to 13.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25