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ZC63A Magnesium vs. ASTM A227 Spring Steel

ZC63A magnesium belongs to the magnesium 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 (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 ZC63A magnesium and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
500 to 640
Elastic (Young's, Tensile) Modulus, GPa 48
190
Elongation at Break, % 3.3
12
Fatigue Strength, MPa 94
900 to 1160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
72
Shear Strength, MPa 130
1030 to 1330
Tensile Strength: Ultimate (UTS), MPa 220
1720 to 2220
Tensile Strength: Yield (Proof), MPa 130
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 98
400
Melting Completion (Liquidus), °C 550
1450
Melting Onset (Solidus), °C 470
1410
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 920
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
200 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
61 to 79
Strength to Weight: Bending, points 38
41 to 48
Thermal Diffusivity, mm2/s 58
14
Thermal Shock Resistance, points 12
55 to 71

Alloy Composition


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Carbon (C), % 0
0.45 to 0.85
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0
97.4 to 99.1
Magnesium (Mg), % 89.2 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.3 to 1.3
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.3
0