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EN 1.4982 Stainless Steel vs. A444.0 Aluminum

EN 1.4982 stainless steel belongs to the iron alloys classification, while A444.0 aluminum belongs to the aluminum alloys. There are 29 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 1.4982 stainless steel and the bottom bar is A444.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 28
18
Fatigue Strength, MPa 420
37
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 750
160
Tensile Strength: Yield (Proof), MPa 570
66

Thermal Properties

Latent Heat of Fusion, J/g 290
500
Maximum Temperature: Mechanical, °C 860
170
Melting Completion (Liquidus), °C 1430
630
Melting Onset (Solidus), °C 1390
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 13
160
Thermal Expansion, µm/m-K 16
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
41
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
140

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 4.9
7.9
Embodied Energy, MJ/kg 71
150
Embodied Water, L/kg 150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
24
Resilience: Unit (Modulus of Resilience), kJ/m3 830
31
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 27
17
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 3.4
68
Thermal Shock Resistance, points 17
7.3

Alloy Composition

Aluminum (Al), % 0
91.6 to 93.5
Boron (B), % 0.0030 to 0.0090
0
Carbon (C), % 0.070 to 0.13
0
Chromium (Cr), % 14 to 16
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 61.8 to 69.7
0 to 0.2
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 5.5 to 7.0
0 to 0.1
Molybdenum (Mo), % 0.8 to 1.2
0
Nickel (Ni), % 9.0 to 11
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.15 to 0.4
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15