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ASTM Grade LC4 Steel vs. 355.0 Aluminum

ASTM grade LC4 steel belongs to the iron alloys classification, while 355.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 grade LC4 steel and the bottom bar is 355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
72 to 83
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 27
1.5 to 2.6
Fatigue Strength, MPa 230
55 to 70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 570
200 to 260
Tensile Strength: Yield (Proof), MPa 310
150 to 190

Thermal Properties

Latent Heat of Fusion, J/g 250
470
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1460
620
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 49
150 to 170
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
38 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
120 to 140

Otherwise Unclassified Properties

Base Metal Price, % relative 4.6
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.8
8.0
Embodied Energy, MJ/kg 24
150
Embodied Water, L/kg 54
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
2.7 to 5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 260
150 to 250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 20
20 to 27
Strength to Weight: Bending, points 19
28 to 33
Thermal Diffusivity, mm2/s 13
60 to 69
Thermal Shock Resistance, points 17
9.1 to 12

Alloy Composition

Aluminum (Al), % 0
90.3 to 94.1
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0
1.0 to 1.5
Iron (Fe), % 93.4 to 95.5
0 to 0.6
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0.5 to 0.8
0 to 0.5
Nickel (Ni), % 4.0 to 5.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.6
4.5 to 5.5
Sulfur (S), % 0 to 0.045
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15