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7003 Aluminum vs. EN 1.4849 Stainless Steel

7003 aluminum belongs to the aluminum alloys classification, while EN 1.4849 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 7003 aluminum and the bottom bar is EN 1.4849 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 130 to 150
120
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 350 to 390
480
Tensile Strength: Yield (Proof), MPa 300 to 310
250

Thermal Properties

Latent Heat of Fusion, J/g 380
320
Maximum Temperature: Mechanical, °C 200
1020
Melting Completion (Liquidus), °C 630
1390
Melting Onset (Solidus), °C 510
1340
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 150
12
Thermal Expansion, µm/m-K 24
15

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
42
Density, g/cm3 2.9
8.0
Embodied Carbon, kg CO2/kg material 8.1
7.1
Embodied Energy, MJ/kg 150
100
Embodied Water, L/kg 1140
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
18
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 33 to 37
17
Strength to Weight: Bending, points 37 to 40
17
Thermal Diffusivity, mm2/s 59
3.2
Thermal Shock Resistance, points 15 to 17
11

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0 to 0.2
18 to 21
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
32.6 to 43.5
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
36 to 39
Niobium (Nb), % 0
1.2 to 1.8
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0