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EN 1.4958 Stainless Steel vs. EN AC-46200 Aluminum

EN 1.4958 stainless steel belongs to the iron alloys classification, while EN AC-46200 aluminum belongs to the aluminum alloys. There are 29 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 EN 1.4958 stainless steel and the bottom bar is EN AC-46200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 40
1.1
Fatigue Strength, MPa 170
87
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 630
210
Tensile Strength: Yield (Proof), MPa 190
130

Thermal Properties

Latent Heat of Fusion, J/g 300
510
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1400
620
Melting Onset (Solidus), °C 1350
540
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 12
110
Thermal Expansion, µm/m-K 15
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
88

Otherwise Unclassified Properties

Base Metal Price, % relative 30
10
Density, g/cm3 8.0
2.8
Embodied Carbon, kg CO2/kg material 5.3
7.7
Embodied Energy, MJ/kg 75
140
Embodied Water, L/kg 200
1060

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
2.0
Resilience: Unit (Modulus of Resilience), kJ/m3 95
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22
21
Strength to Weight: Bending, points 20
28
Thermal Diffusivity, mm2/s 3.2
44
Thermal Shock Resistance, points 15
9.5

Alloy Composition

Aluminum (Al), % 0.2 to 0.5
82.6 to 90.3
Carbon (C), % 0.030 to 0.080
0
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
2.0 to 3.5
Iron (Fe), % 41.1 to 50.6
0 to 0.8
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0
0.050 to 0.55
Manganese (Mn), % 0 to 1.5
0.15 to 0.65
Nickel (Ni), % 30 to 32.5
0 to 0.35
Niobium (Nb), % 0 to 0.1
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
7.5 to 9.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0.2 to 0.5
0 to 0.25
Zinc (Zn), % 0
0 to 1.2
Residuals, % 0
0 to 0.25