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4115 Aluminum vs. EN 1.4941 Stainless Steel

4115 aluminum belongs to the aluminum alloys classification, while EN 1.4941 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 4115 aluminum and the bottom bar is EN 1.4941 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 38 to 68
180
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 11
39
Fatigue Strength, MPa 39 to 76
180
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 71 to 130
400
Tensile Strength: Ultimate (UTS), MPa 120 to 220
590
Tensile Strength: Yield (Proof), MPa 39 to 190
210

Thermal Properties

Latent Heat of Fusion, J/g 420
290
Maximum Temperature: Mechanical, °C 160
940
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 590
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
16
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
16
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.1
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1160
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 10
180
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 270
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12 to 23
21
Strength to Weight: Bending, points 20 to 30
20
Thermal Diffusivity, mm2/s 66
4.3
Thermal Shock Resistance, points 5.2 to 9.9
13

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Boron (B), % 0
0.0015 to 0.0050
Carbon (C), % 0
0.040 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.1 to 0.5
0
Iron (Fe), % 0 to 0.7
65.1 to 73.6
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
0 to 2.0
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 1.8 to 2.2
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.4 to 0.8
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0