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EN 1.4418 Stainless Steel vs. 712.0 Aluminum

EN 1.4418 stainless steel belongs to the iron alloys classification, while 712.0 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 EN 1.4418 stainless steel and the bottom bar is 712.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 16 to 20
4.5 to 4.7
Fatigue Strength, MPa 350 to 480
140 to 180
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
27
Shear Strength, MPa 530 to 620
180
Tensile Strength: Ultimate (UTS), MPa 860 to 1000
250 to 260
Tensile Strength: Yield (Proof), MPa 540 to 790
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 870
190
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
610
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 15
160
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 2.8
8.0
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 130
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 170
11
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1590
240 to 270
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 31 to 36
24 to 25
Strength to Weight: Bending, points 26 to 28
30 to 31
Thermal Diffusivity, mm2/s 4.0
62
Thermal Shock Resistance, points 31 to 36
11

Alloy Composition

Aluminum (Al), % 0
90.7 to 94
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 15 to 17
0.4 to 0.6
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 73.2 to 80.2
0 to 0.5
Magnesium (Mg), % 0
0.5 to 0.65
Manganese (Mn), % 0 to 1.5
0 to 0.1
Molybdenum (Mo), % 0.8 to 1.5
0
Nickel (Ni), % 4.0 to 6.0
0
Nitrogen (N), % 0 to 0.020
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.7
0 to 0.3
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.15 to 0.25
Zinc (Zn), % 0
5.0 to 6.5
Residuals, % 0
0 to 0.2