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1050A Aluminum vs. ASTM A227 Spring Steel

1050A aluminum belongs to the aluminum alloys classification, while ASTM A227 spring steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 1050A aluminum and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 20 to 45
500 to 640
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 33
12
Fatigue Strength, MPa 22 to 55
900 to 1160
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 44 to 97
1030 to 1330
Tensile Strength: Ultimate (UTS), MPa 68 to 170
1720 to 2220
Tensile Strength: Yield (Proof), MPa 22 to 150
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 660
1450
Melting Onset (Solidus), °C 650
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
52
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 59
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 200
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1200
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.9 to 19
200 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 6.9 to 18
61 to 79
Strength to Weight: Bending, points 14 to 25
41 to 48
Thermal Diffusivity, mm2/s 94
14
Thermal Shock Resistance, points 3.0 to 7.6
55 to 71

Alloy Composition

Aluminum (Al), % 99.5 to 100
0
Carbon (C), % 0
0.45 to 0.85
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.4
97.4 to 99.1
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.050
0.3 to 1.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.070
0

Comparable Variants