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EN 1.3956 Stainless Steel vs. EN AC-45000 Aluminum

EN 1.3956 stainless steel belongs to the iron alloys classification, while EN AC-45000 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-45000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 27
1.1
Fatigue Strength, MPa 240
75
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 650
180
Tensile Strength: Yield (Proof), MPa 330
110

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1080
180
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
520
Specific Heat Capacity, J/kg-K 480
870
Thermal Expansion, µm/m-K 13
22

Otherwise Unclassified Properties

Base Metal Price, % relative 22
11
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 4.8
7.7
Embodied Energy, MJ/kg 68
140
Embodied Water, L/kg 180
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
1.7
Resilience: Unit (Modulus of Resilience), kJ/m3 270
80
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 23
17
Strength to Weight: Bending, points 21
24
Thermal Shock Resistance, points 18
8.0

Alloy Composition

Aluminum (Al), % 0
82.2 to 91.8
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0 to 0.15
Copper (Cu), % 0
3.0 to 5.0
Iron (Fe), % 51.9 to 62.1
0 to 1.0
Lead (Pb), % 0
0 to 0.3
Magnesium (Mg), % 0
0 to 0.55
Manganese (Mn), % 4.0 to 6.0
0.2 to 0.65
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.45
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
5.0 to 7.0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 2.0
Residuals, % 0
0 to 0.35