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AISI 312 Stainless Steel vs. EN AC-47000 Aluminum

AISI 312 stainless steel belongs to the iron alloys classification, while EN AC-47000 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 312 stainless steel and the bottom bar is EN AC-47000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
60
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 28
1.7
Fatigue Strength, MPa 370
68
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
27
Tensile Strength: Ultimate (UTS), MPa 780
180
Tensile Strength: Yield (Proof), MPa 510
97

Thermal Properties

Latent Heat of Fusion, J/g 300
570
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1430
590
Melting Onset (Solidus), °C 1390
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
33
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
110

Otherwise Unclassified Properties

Base Metal Price, % relative 17
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 3.4
7.7
Embodied Energy, MJ/kg 48
140
Embodied Water, L/kg 170
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
2.5
Resilience: Unit (Modulus of Resilience), kJ/m3 640
65
Stiffness to Weight: Axial, points 15
16
Stiffness to Weight: Bending, points 25
54
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 24
27
Thermal Diffusivity, mm2/s 4.3
55
Thermal Shock Resistance, points 21
8.3

Alloy Composition

Aluminum (Al), % 0
82.1 to 89.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 24 to 26
0 to 0.1
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 62.2 to 69.2
0 to 0.8
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 0 to 2.0
0.050 to 0.55
Molybdenum (Mo), % 1.2 to 2.0
0
Nickel (Ni), % 5.5 to 6.5
0 to 0.3
Nitrogen (N), % 0.14 to 0.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
10.5 to 13.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25