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EN AC-46400 Aluminum vs. ASTM A227 Spring Steel

EN AC-46400 aluminum belongs to the aluminum alloys classification, while ASTM A227 spring steel belongs to the iron alloys. There are 29 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 EN AC-46400 aluminum and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77 to 120
500 to 640
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1 to 1.7
12
Fatigue Strength, MPa 75 to 85
900 to 1160
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
72
Tensile Strength: Ultimate (UTS), MPa 170 to 310
1720 to 2220
Tensile Strength: Yield (Proof), MPa 110 to 270
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 520
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 610
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 130
52
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 7.8
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1070
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7 to 4.9
200 to 260
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 18 to 32
61 to 79
Strength to Weight: Bending, points 26 to 38
41 to 48
Thermal Diffusivity, mm2/s 55
14
Thermal Shock Resistance, points 7.8 to 14
55 to 71

Alloy Composition

Aluminum (Al), % 85.4 to 90.5
0
Carbon (C), % 0
0.45 to 0.85
Copper (Cu), % 0.8 to 1.3
0
Iron (Fe), % 0 to 0.8
97.4 to 99.1
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0.25 to 0.65
0
Manganese (Mn), % 0.15 to 0.55
0.3 to 1.3
Nickel (Ni), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 8.3 to 9.7
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.8
0
Residuals, % 0 to 0.25
0

Comparable Variants