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EN AC-47000 Aluminum vs. EN 1.4125 Stainless Steel

EN AC-47000 aluminum belongs to the aluminum alloys classification, while EN 1.4125 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AC-47000 aluminum and the bottom bar is EN 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
250
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.7
19
Fatigue Strength, MPa 68
300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 180
800
Tensile Strength: Yield (Proof), MPa 97
470

Thermal Properties

Latent Heat of Fusion, J/g 570
280
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 590
1430
Melting Onset (Solidus), °C 570
1390
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 21
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.3
Embodied Energy, MJ/kg 140
32
Embodied Water, L/kg 1040
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.5
130
Resilience: Unit (Modulus of Resilience), kJ/m3 65
570
Stiffness to Weight: Axial, points 16
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 27
25
Thermal Diffusivity, mm2/s 55
4.1
Thermal Shock Resistance, points 8.3
29

Alloy Composition

Aluminum (Al), % 82.1 to 89.5
0
Carbon (C), % 0
1.0 to 1.2
Chromium (Cr), % 0 to 0.1
16 to 18
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 0 to 0.8
78 to 82.7
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0 to 0.35
0
Manganese (Mn), % 0.050 to 0.55
0 to 1.0
Molybdenum (Mo), % 0
0.4 to 0.8
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 10.5 to 13.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.55
0
Residuals, % 0 to 0.25
0