MakeItFrom.com
Menu (ESC)

AISI 409 Stainless Steel vs. EN AC-42100 Aluminum

AISI 409 stainless steel belongs to the iron alloys classification, while EN AC-42100 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 AISI 409 stainless steel and the bottom bar is EN AC-42100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 24
3.4 to 9.0
Fatigue Strength, MPa 140
76 to 82
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
26
Tensile Strength: Ultimate (UTS), MPa 420
280 to 290
Tensile Strength: Yield (Proof), MPa 200
210 to 230

Thermal Properties

Latent Heat of Fusion, J/g 270
500
Maximum Temperature: Mechanical, °C 710
170
Melting Completion (Liquidus), °C 1450
610
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 25
150
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
41
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
140

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.0
8.0
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 94
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
9.1 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 100
300 to 370
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 15
30 to 31
Strength to Weight: Bending, points 16
37 to 38
Thermal Diffusivity, mm2/s 6.7
66
Thermal Shock Resistance, points 15
13

Alloy Composition

Aluminum (Al), % 0
91.3 to 93.3
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 10.5 to 11.7
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 84.9 to 89.5
0 to 0.19
Magnesium (Mg), % 0
0.25 to 0.45
Manganese (Mn), % 0 to 1.0
0 to 0.1
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.75
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1