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S21603 Stainless Steel vs. 5252 Aluminum

S21603 stainless steel belongs to the iron alloys classification, while 5252 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, 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 S21603 stainless steel and the bottom bar is 5252 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
68 to 75
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 45
4.5 to 11
Fatigue Strength, MPa 360
100 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
25
Shear Strength, MPa 490
140 to 160
Tensile Strength: Ultimate (UTS), MPa 690
230 to 290
Tensile Strength: Yield (Proof), MPa 390
170 to 240

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 990
180
Melting Completion (Liquidus), °C 1420
650
Melting Onset (Solidus), °C 1380
610
Specific Heat Capacity, J/kg-K 480
910
Thermal Expansion, µm/m-K 17
24

Otherwise Unclassified Properties

Base Metal Price, % relative 17
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.6
8.7
Embodied Energy, MJ/kg 50
160
Embodied Water, L/kg 160
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 380
210 to 430
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 25
23 to 30
Strength to Weight: Bending, points 22
31 to 36
Thermal Shock Resistance, points 15
10 to 13

Alloy Composition

Aluminum (Al), % 0
96.6 to 97.8
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 22
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 57.6 to 67.8
0 to 0.1
Magnesium (Mg), % 0
2.2 to 2.8
Manganese (Mn), % 7.5 to 9.0
0 to 0.1
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
0
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.080
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.1