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705.0 Aluminum vs. EN 1.4310 Stainless Steel

705.0 aluminum belongs to the aluminum alloys classification, while EN 1.4310 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 705.0 aluminum and the bottom bar is EN 1.4310 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62 to 65
200 to 270
Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 8.4 to 10
14 to 45
Fatigue Strength, MPa 63 to 98
240 to 330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 240 to 260
730 to 900
Tensile Strength: Yield (Proof), MPa 130
260 to 570

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 180
910
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 610
1380
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 24
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
14
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.4
2.9
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1170
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 18 to 20
110 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 130
170 to 830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 24 to 26
26 to 32
Strength to Weight: Bending, points 31 to 32
23 to 27
Thermal Diffusivity, mm2/s 55
4.0
Thermal Shock Resistance, points 11
15 to 18

Alloy Composition

Aluminum (Al), % 92.3 to 98.6
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0 to 0.4
16 to 19
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.8
66.4 to 78
Magnesium (Mg), % 1.4 to 1.8
0
Manganese (Mn), % 0 to 0.6
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.8
Nickel (Ni), % 0
6.0 to 9.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.2
0 to 2.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 3.3
0
Residuals, % 0 to 0.15
0