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AZ61A Magnesium vs. N08031 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while N08031 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
210
Elongation at Break, % 11
45
Fatigue Strength, MPa 130
290
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
81
Shear Strength, MPa 150
510
Tensile Strength: Ultimate (UTS), MPa 280
730
Tensile Strength: Yield (Proof), MPa 170
310

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 990
460
Thermal Conductivity, W/m-K 79
12
Thermal Expansion, µm/m-K 27
18

Otherwise Unclassified Properties

Base Metal Price, % relative 12
39
Density, g/cm3 1.7
8.1
Embodied Carbon, kg CO2/kg material 23
7.1
Embodied Energy, MJ/kg 160
96
Embodied Water, L/kg 980
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
270
Resilience: Unit (Modulus of Resilience), kJ/m3 310
230
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
25
Strength to Weight: Bending, points 56
22
Thermal Diffusivity, mm2/s 47
3.1
Thermal Shock Resistance, points 17
14

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
26 to 28
Copper (Cu), % 0 to 0.050
1.0 to 1.4
Iron (Fe), % 0 to 0.0050
29 to 36.9
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.0050
30 to 32
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.1
0 to 0.3
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0