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EN 1.4122 Stainless Steel vs. 4032 Aluminum

EN 1.4122 stainless steel belongs to the iron alloys classification, while 4032 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4122 stainless steel and the bottom bar is 4032 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 14
6.7
Fatigue Strength, MPa 260 to 360
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
28
Shear Strength, MPa 480 to 520
260
Tensile Strength: Ultimate (UTS), MPa 790 to 850
390
Tensile Strength: Yield (Proof), MPa 450 to 630
320

Thermal Properties

Latent Heat of Fusion, J/g 280
570
Maximum Temperature: Mechanical, °C 870
180
Melting Completion (Liquidus), °C 1440
570
Melting Onset (Solidus), °C 1400
530
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
140
Thermal Expansion, µm/m-K 10
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.4
7.8
Embodied Energy, MJ/kg 33
140
Embodied Water, L/kg 120
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
25
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
700
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 28 to 31
41
Strength to Weight: Bending, points 25 to 26
45
Thermal Diffusivity, mm2/s 4.0
59
Thermal Shock Resistance, points 28 to 30
20

Alloy Composition

Aluminum (Al), % 0
81.1 to 87.2
Carbon (C), % 0.33 to 0.45
0
Chromium (Cr), % 15.5 to 17.5
0 to 0.1
Copper (Cu), % 0
0.5 to 1.3
Iron (Fe), % 77.2 to 83.4
0 to 1.0
Magnesium (Mg), % 0
0.8 to 1.3
Manganese (Mn), % 0 to 1.5
0
Molybdenum (Mo), % 0.8 to 1.3
0
Nickel (Ni), % 0 to 1.0
0.5 to 1.3
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
11 to 13.5
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15