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EN 1.7386 Steel vs. 238.0 Aluminum

EN 1.7386 steel belongs to the iron alloys classification, while 238.0 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 EN 1.7386 steel and the bottom bar is 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
76
Elongation at Break, % 18 to 21
1.5
Fatigue Strength, MPa 170 to 290
110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
28
Tensile Strength: Ultimate (UTS), MPa 550 to 670
210
Tensile Strength: Yield (Proof), MPa 240 to 440
170

Thermal Properties

Latent Heat of Fusion, J/g 270
430
Maximum Temperature: Mechanical, °C 600
170
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 480
840
Thermal Conductivity, W/m-K 26
100
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
25
Electrical Conductivity: Equal Weight (Specific), % IACS 10
67

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
12
Density, g/cm3 7.8
3.4
Embodied Carbon, kg CO2/kg material 2.0
7.4
Embodied Energy, MJ/kg 28
140
Embodied Water, L/kg 88
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92 to 110
2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 490
180
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
42
Strength to Weight: Axial, points 20 to 24
17
Strength to Weight: Bending, points 19 to 22
23
Thermal Diffusivity, mm2/s 6.9
37
Thermal Shock Resistance, points 15 to 18
9.1

Alloy Composition

Aluminum (Al), % 0 to 0.040
81.9 to 84.9
Carbon (C), % 0.080 to 0.15
0
Chromium (Cr), % 8.0 to 10
0
Copper (Cu), % 0 to 0.3
9.5 to 10.5
Iron (Fe), % 86.8 to 90.5
1.0 to 1.5
Magnesium (Mg), % 0
0 to 0.25
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0.25 to 1.0
3.6 to 4.4
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
1.0 to 1.5