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AZ61A Magnesium vs. AISI 205 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while AISI 205 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, 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 AISI 205 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
11 to 51
Fatigue Strength, MPa 130
410 to 640
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
560 to 850
Tensile Strength: Ultimate (UTS), MPa 280
800 to 1430
Tensile Strength: Yield (Proof), MPa 170
450 to 1100

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
880
Melting Completion (Liquidus), °C 600
1380
Melting Onset (Solidus), °C 530
1340
Specific Heat Capacity, J/kg-K 990
480
Thermal Expansion, µm/m-K 27
18

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 1.7
7.6
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
37
Embodied Water, L/kg 980
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
150 to 430
Resilience: Unit (Modulus of Resilience), kJ/m3 310
510 to 3060
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
26
Strength to Weight: Axial, points 46
29 to 52
Strength to Weight: Bending, points 56
25 to 37
Thermal Shock Resistance, points 17
16 to 29

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.12 to 0.25
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
62.6 to 68.1
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
14 to 15.5
Nickel (Ni), % 0 to 0.0050
1.0 to 1.7
Nitrogen (N), % 0
0.32 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0