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AISI 347 Stainless Steel vs. EN AC-44500 Aluminum

AISI 347 stainless steel belongs to the iron alloys classification, while EN AC-44500 aluminum belongs to the aluminum alloys. There are 30 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 AISI 347 stainless steel and the bottom bar is EN AC-44500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 210
68
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 34 to 46
1.1
Fatigue Strength, MPa 220 to 270
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 610 to 690
270
Tensile Strength: Yield (Proof), MPa 240 to 350
160

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Maximum Temperature: Mechanical, °C 870
170
Melting Completion (Liquidus), °C 1430
590
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
120

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.8
2.5
Embodied Carbon, kg CO2/kg material 3.6
7.7
Embodied Energy, MJ/kg 52
140
Embodied Water, L/kg 150
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 220
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 310
180
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
55
Strength to Weight: Axial, points 22 to 25
29
Strength to Weight: Bending, points 20 to 22
36
Thermal Diffusivity, mm2/s 4.3
57
Thermal Shock Resistance, points 13 to 15
13

Alloy Composition

Aluminum (Al), % 0
83.7 to 89.5
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 64.1 to 74
0 to 1.0
Magnesium (Mg), % 0
0 to 0.4
Manganese (Mn), % 0 to 2.0
0 to 0.55
Nickel (Ni), % 9.0 to 13
0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
10.5 to 13.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.25