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AZ61A Magnesium vs. N08020 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while N08020 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AZ61A magnesium and the bottom bar is N08020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
15 to 34
Fatigue Strength, MPa 130
210 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
380 to 410
Tensile Strength: Ultimate (UTS), MPa 280
610 to 620
Tensile Strength: Yield (Proof), MPa 170
270 to 420

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 530
1360
Specific Heat Capacity, J/kg-K 990
460
Thermal Conductivity, W/m-K 79
12
Thermal Expansion, µm/m-K 27
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
1.6
Electrical Conductivity: Equal Weight (Specific), % IACS 62
1.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
38
Density, g/cm3 1.7
8.2
Embodied Carbon, kg CO2/kg material 23
6.6
Embodied Energy, MJ/kg 160
92
Embodied Water, L/kg 980
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
83 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 310
180 to 440
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
21
Strength to Weight: Bending, points 56
20
Thermal Diffusivity, mm2/s 47
3.2
Thermal Shock Resistance, points 17
15

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.050
3.0 to 4.0
Iron (Fe), % 0 to 0.0050
29.9 to 44
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.0050
32 to 38
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.035
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0