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SAE-AISI 4340M Steel vs. 852.0 Aluminum

SAE-AISI 4340M steel belongs to the iron alloys classification, while 852.0 aluminum belongs to the aluminum alloys. There are 31 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 SAE-AISI 4340M steel and the bottom bar is 852.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
64
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 6.0
3.4
Fatigue Strength, MPa 690
73
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Shear Strength, MPa 1360
130
Tensile Strength: Ultimate (UTS), MPa 2340
200
Tensile Strength: Yield (Proof), MPa 1240
150

Thermal Properties

Latent Heat of Fusion, J/g 280
370
Maximum Temperature: Mechanical, °C 430
190
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
210
Specific Heat Capacity, J/kg-K 480
840
Thermal Conductivity, W/m-K 38
180
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
45
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
15
Density, g/cm3 7.8
3.2
Embodied Carbon, kg CO2/kg material 1.9
8.5
Embodied Energy, MJ/kg 26
160
Embodied Water, L/kg 55
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.2
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
160
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 25
43
Strength to Weight: Axial, points 84
17
Strength to Weight: Bending, points 51
24
Thermal Diffusivity, mm2/s 10
65
Thermal Shock Resistance, points 70
8.7

Alloy Composition

Aluminum (Al), % 0
86.6 to 91.3
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
1.7 to 2.3
Iron (Fe), % 93.3 to 94.8
0 to 0.7
Magnesium (Mg), % 0
0.6 to 0.9
Manganese (Mn), % 0.65 to 0.9
0 to 0.1
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
0.9 to 1.5
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0 to 0.4
Sulfur (S), % 0 to 0.012
0
Tin (Sn), % 0
5.5 to 7.0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.050 to 0.1
0
Residuals, % 0
0 to 0.3