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ASTM A225 Steel vs. EN AC-51500 Aluminum

ASTM A225 steel belongs to the iron alloys classification, while EN AC-51500 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 ASTM A225 steel and the bottom bar is EN AC-51500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 250
80
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 21 to 23
5.6
Fatigue Strength, MPa 330 to 390
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 620 to 830
280
Tensile Strength: Yield (Proof), MPa 460 to 550
160

Thermal Properties

Latent Heat of Fusion, J/g 250
430
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
590
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 52
120
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
88

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 1.8
9.0
Embodied Energy, MJ/kg 24 to 25
150
Embodied Water, L/kg 48
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 170
13
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 820
190
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 22 to 29
29
Strength to Weight: Bending, points 21 to 25
36
Thermal Diffusivity, mm2/s 14
49
Thermal Shock Resistance, points 18 to 24
13