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EN 1.4959 Stainless Steel vs. EN AC-47100 Aluminum

EN 1.4959 stainless steel belongs to the iron alloys classification, while EN AC-47100 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 1.4959 stainless steel and the bottom bar is EN AC-47100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 40
1.1
Fatigue Strength, MPa 170
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 630
270
Tensile Strength: Yield (Proof), MPa 190
160

Thermal Properties

Latent Heat of Fusion, J/g 300
570
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1400
590
Melting Onset (Solidus), °C 1350
560
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 15
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
30
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
100

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.0
2.6
Embodied Carbon, kg CO2/kg material 5.4
7.6
Embodied Energy, MJ/kg 76
140
Embodied Water, L/kg 200
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 96
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 22
28
Strength to Weight: Bending, points 20
35
Thermal Diffusivity, mm2/s 3.2
54
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
81.4 to 88.8
Carbon (C), % 0.050 to 0.1
0
Chromium (Cr), % 19 to 22
0 to 0.1
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
0.7 to 1.2
Iron (Fe), % 39.4 to 50.5
0 to 1.3
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 0 to 1.5
0 to 0.55
Nickel (Ni), % 30 to 34
0 to 0.3
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
10.5 to 13.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0.25 to 0.65
0 to 0.2
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25