EN AC-42200 Aluminum vs. ASTM A227 Spring Steel
EN AC-42200 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-42200 aluminum and the bottom bar is ASTM A227 spring steel.
Metric UnitsUS Customary Units
Mechanical Properties
Brinell Hardness | 89 to 100 | |
500 to 640 |
Elastic (Young's, Tensile) Modulus, GPa | 70 | |
190 |
Elongation at Break, % | 3.0 to 6.7 | |
12 |
Fatigue Strength, MPa | 86 to 90 | |
900 to 1160 |
Poisson's Ratio | 0.33 | |
0.29 |
Shear Modulus, GPa | 26 | |
72 |
Tensile Strength: Ultimate (UTS), MPa | 320 | |
1720 to 2220 |
Tensile Strength: Yield (Proof), MPa | 240 to 260 | |
1430 to 1850 |
Thermal Properties
Latent Heat of Fusion, J/g | 500 | |
250 |
Maximum Temperature: Mechanical, °C | 170 | |
400 |
Melting Completion (Liquidus), °C | 610 | |
1450 |
Melting Onset (Solidus), °C | 600 | |
1410 |
Specific Heat Capacity, J/kg-K | 910 | |
470 |
Thermal Conductivity, W/m-K | 150 | |
52 |
Thermal Expansion, µm/m-K | 22 | |
12 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 40 | |
7.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 140 | |
8.3 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 9.5 | |
1.8 |
Density, g/cm3 | 2.6 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 8.0 | |
1.4 |
Embodied Energy, MJ/kg | 150 | |
19 |
Embodied Water, L/kg | 1110 | |
46 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 9.0 to 20 | |
200 to 260 |
Stiffness to Weight: Axial, points | 15 | |
13 |
Stiffness to Weight: Bending, points | 53 | |
24 |
Strength to Weight: Axial, points | 34 to 35 | |
61 to 79 |
Strength to Weight: Bending, points | 40 to 41 | |
41 to 48 |
Thermal Diffusivity, mm2/s | 66 | |
14 |
Thermal Shock Resistance, points | 15 | |
55 to 71 |
Alloy Composition
Aluminum (Al), % | 91 to 93.1 | |
0 |
Carbon (C), % | 0 | |
0.45 to 0.85 |
Copper (Cu), % | 0 to 0.050 | |
0 |
Iron (Fe), % | 0 to 0.19 | |
97.4 to 99.1 |
Magnesium (Mg), % | 0.45 to 0.7 | |
0 |
Manganese (Mn), % | 0 to 0.1 | |
0.3 to 1.3 |
Phosphorus (P), % | 0 | |
0 to 0.040 |
Silicon (Si), % | 6.5 to 7.5 | |
0.15 to 0.35 |
Sulfur (S), % | 0 | |
0 to 0.050 |
Titanium (Ti), % | 0 to 0.25 | |
0 |
Zinc (Zn), % | 0 to 0.070 | |
0 |
Residuals, % | 0 to 0.1 | |
0 |