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EN 1.4945 Stainless Steel vs. EN AC-47100 Aluminum

EN 1.4945 stainless steel belongs to the iron alloys classification, while EN AC-47100 aluminum belongs to the aluminum 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 1.4945 stainless steel and the bottom bar is EN AC-47100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 220
80
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 19 to 34
1.1
Fatigue Strength, MPa 230 to 350
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 640 to 740
270
Tensile Strength: Yield (Proof), MPa 290 to 550
160

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Maximum Temperature: Mechanical, °C 920
170
Melting Completion (Liquidus), °C 1490
590
Melting Onset (Solidus), °C 1440
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 14
130
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
30
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
100

Otherwise Unclassified Properties

Base Metal Price, % relative 30
9.5
Density, g/cm3 8.1
2.6
Embodied Carbon, kg CO2/kg material 5.0
7.6
Embodied Energy, MJ/kg 73
140
Embodied Water, L/kg 150
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 760
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 22 to 25
28
Strength to Weight: Bending, points 20 to 22
35
Thermal Diffusivity, mm2/s 3.7
54
Thermal Shock Resistance, points 14 to 16
12

Alloy Composition

Aluminum (Al), % 0
81.4 to 88.8
Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 15.5 to 17.5
0 to 0.1
Copper (Cu), % 0
0.7 to 1.2
Iron (Fe), % 57.9 to 65.7
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), % 15.5 to 17.5
0 to 0.3
Niobium (Nb), % 0.4 to 1.2
0
Nitrogen (N), % 0.060 to 0.14
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.3 to 0.6
10.5 to 13.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 2.5 to 3.5
0
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25