MakeItFrom.com
Menu (ESC)

7049 Aluminum vs. SAE-AISI 52100 Steel

7049 aluminum belongs to the aluminum alloys classification, while SAE-AISI 52100 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 7049 aluminum and the bottom bar is SAE-AISI 52100 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
180 to 210
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2 to 7.0
10 to 20
Fatigue Strength, MPa 160 to 170
250 to 340
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
72
Shear Strength, MPa 300 to 310
370 to 420
Tensile Strength: Ultimate (UTS), MPa 510 to 530
590 to 2010
Tensile Strength: Yield (Proof), MPa 420 to 450
360 to 560

Thermal Properties

Latent Heat of Fusion, J/g 370
250
Maximum Temperature: Mechanical, °C 180
430
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 480
1410
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 130
47
Thermal Expansion, µm/m-K 23
12 to 13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.4
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1110
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
54 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
350 to 840
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 46 to 47
21 to 72
Strength to Weight: Bending, points 46 to 47
20 to 45
Thermal Diffusivity, mm2/s 51
13
Thermal Shock Resistance, points 22 to 23
19 to 61

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
0.93 to 1.1
Chromium (Cr), % 0.1 to 0.22
1.4 to 1.6
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.35
96.5 to 97.3
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0.25 to 0.45
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.25
0.15 to 0.35
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0 to 0.15
0