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ASTM A229 Spring Steel vs. 5456 Aluminum

ASTM A229 spring steel belongs to the iron alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 30 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 ASTM A229 spring steel and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 14
11 to 18
Fatigue Strength, MPa 710 to 790
130 to 210
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Shear Strength, MPa 1020 to 1140
190 to 210
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
320 to 340
Tensile Strength: Yield (Proof), MPa 1100 to 1230
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 50
120
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
29
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
97

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
9.0
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 46
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
170 to 470
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 60 to 67
33 to 35
Strength to Weight: Bending, points 40 to 43
38 to 40
Thermal Diffusivity, mm2/s 14
48
Thermal Shock Resistance, points 54 to 60
14 to 15

Alloy Composition

Aluminum (Al), % 0
92 to 94.8
Carbon (C), % 0.55 to 0.85
0
Chromium (Cr), % 0
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 97.5 to 99
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0.3 to 1.2
0.5 to 1.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0 to 0.25
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants