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2025 Aluminum vs. EN 1.4874 Stainless Steel

2025 aluminum belongs to the aluminum alloys classification, while EN 1.4874 stainless steel belongs to the iron alloys. There are 28 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 2025 aluminum and the bottom bar is EN 1.4874 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
140
Elastic (Young's, Tensile) Modulus, GPa 72
210
Elongation at Break, % 15
6.7
Fatigue Strength, MPa 130
180
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
80
Tensile Strength: Ultimate (UTS), MPa 400
480
Tensile Strength: Yield (Proof), MPa 260
360

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 190
1150
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 520
1400
Specific Heat Capacity, J/kg-K 870
450
Thermal Conductivity, W/m-K 150
13
Thermal Expansion, µm/m-K 23
15

Otherwise Unclassified Properties

Base Metal Price, % relative 10
70
Density, g/cm3 3.0
8.4
Embodied Carbon, kg CO2/kg material 7.9
7.6
Embodied Energy, MJ/kg 150
110
Embodied Water, L/kg 1130
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
29
Resilience: Unit (Modulus of Resilience), kJ/m3 450
310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 37
16
Strength to Weight: Bending, points 40
16
Thermal Diffusivity, mm2/s 58
3.3
Thermal Shock Resistance, points 18
11

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Carbon (C), % 0
0.35 to 0.65
Chromium (Cr), % 0 to 0.1
19 to 22
Cobalt (Co), % 0
18.5 to 22
Copper (Cu), % 3.9 to 5.0
0
Iron (Fe), % 0 to 1.0
23 to 38.9
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
18 to 22
Niobium (Nb), % 0
0.75 to 1.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 1.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
2.0 to 3.0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0