MakeItFrom.com
Menu (ESC)

7049 Aluminum vs. AISI 416 Stainless Steel

7049 aluminum belongs to the aluminum alloys classification, while AISI 416 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 7049 aluminum and the bottom bar is AISI 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.2 to 7.0
13 to 31
Fatigue Strength, MPa 160 to 170
230 to 340
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
76
Shear Strength, MPa 300 to 310
340 to 480
Tensile Strength: Ultimate (UTS), MPa 510 to 530
510 to 800
Tensile Strength: Yield (Proof), MPa 420 to 450
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Maximum Temperature: Mechanical, °C 180
680
Melting Completion (Liquidus), °C 640
1530
Melting Onset (Solidus), °C 480
1480
Specific Heat Capacity, J/kg-K 860
480
Thermal Conductivity, W/m-K 130
30
Thermal Expansion, µm/m-K 23
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.1
1.9
Embodied Energy, MJ/kg 140
27
Embodied Water, L/kg 1110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 31 to 34
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 1440
220 to 940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 46 to 47
18 to 29
Strength to Weight: Bending, points 46 to 47
18 to 25
Thermal Diffusivity, mm2/s 51
8.1
Thermal Shock Resistance, points 22 to 23
19 to 30

Alloy Composition

Aluminum (Al), % 85.7 to 89.5
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0.1 to 0.22
12 to 14
Copper (Cu), % 1.2 to 1.9
0
Iron (Fe), % 0 to 0.35
83.2 to 87.9
Magnesium (Mg), % 2.0 to 2.9
0
Manganese (Mn), % 0 to 0.2
0 to 1.3
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 7.2 to 8.2
0
Residuals, % 0 to 0.15
0