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EN 1.4826 Stainless Steel vs. 7049A Aluminum

EN 1.4826 stainless steel belongs to the iron alloys classification, while 7049A aluminum belongs to the aluminum alloys. There are 29 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 1.4826 stainless steel and the bottom bar is 7049A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 9.1
5.0 to 5.7
Fatigue Strength, MPa 140
180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 500
580 to 590
Tensile Strength: Yield (Proof), MPa 260
500 to 530

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Maximum Temperature: Mechanical, °C 950
200
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1360
430
Specific Heat Capacity, J/kg-K 490
850
Thermal Conductivity, W/m-K 14
130
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
120

Otherwise Unclassified Properties

Base Metal Price, % relative 17
10
Density, g/cm3 7.7
3.1
Embodied Carbon, kg CO2/kg material 3.3
8.2
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 160
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
28 to 32
Resilience: Unit (Modulus of Resilience), kJ/m3 170
1800 to 1990
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
44
Strength to Weight: Axial, points 18
52 to 53
Strength to Weight: Bending, points 18
50 to 51
Thermal Diffusivity, mm2/s 3.7
50
Thermal Shock Resistance, points 11
25

Alloy Composition

Aluminum (Al), % 0
84.6 to 89.5
Carbon (C), % 0.3 to 0.5
0
Chromium (Cr), % 21 to 23
0.050 to 0.25
Copper (Cu), % 0
1.2 to 1.9
Iron (Fe), % 60.4 to 68.7
0 to 0.5
Magnesium (Mg), % 0
2.1 to 3.1
Manganese (Mn), % 0 to 2.0
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 9.0 to 11
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 1.0 to 2.5
0 to 0.4
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
7.2 to 8.4
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0
0 to 0.15