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336.0 Aluminum vs. ASTM A372 Grade A Steel

336.0 aluminum belongs to the aluminum alloys classification, while ASTM A372 grade A steel belongs to the iron alloys. 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 336.0 aluminum and the bottom bar is ASTM A372 grade A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 130
140
Elastic (Young's, Tensile) Modulus, GPa 75
190
Elongation at Break, % 0.5
22
Fatigue Strength, MPa 80 to 93
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
73
Shear Strength, MPa 190 to 250
320
Tensile Strength: Ultimate (UTS), MPa 250 to 320
500
Tensile Strength: Yield (Proof), MPa 190 to 300
270

Thermal Properties

Latent Heat of Fusion, J/g 570
250
Maximum Temperature: Mechanical, °C 210
400
Melting Completion (Liquidus), °C 570
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 19
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 95
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.4
Embodied Energy, MJ/kg 140
18
Embodied Water, L/kg 1010
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.1 to 1.6
95
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 580
200
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 25 to 32
18
Strength to Weight: Bending, points 32 to 38
18
Thermal Diffusivity, mm2/s 48
14
Thermal Shock Resistance, points 12 to 16
16

Alloy Composition

Aluminum (Al), % 79.1 to 85.8
0
Carbon (C), % 0
0 to 0.3
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 0 to 1.2
98.3 to 99.85
Magnesium (Mg), % 0.7 to 1.3
0
Manganese (Mn), % 0 to 0.35
0 to 1.0
Nickel (Ni), % 2.0 to 3.0
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 11 to 13
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0