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AZ92A Magnesium vs. S30815 Stainless Steel

AZ92A magnesium belongs to the magnesium alloys classification, while S30815 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 AZ92A magnesium and the bottom bar is S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
200
Elongation at Break, % 2.1 to 6.8
45
Fatigue Strength, MPa 76 to 90
320
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
77
Shear Strength, MPa 97 to 160
480
Tensile Strength: Ultimate (UTS), MPa 170 to 270
680
Tensile Strength: Yield (Proof), MPa 83 to 140
350

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Maximum Temperature: Mechanical, °C 130
1020
Melting Completion (Liquidus), °C 590
1400
Melting Onset (Solidus), °C 440
1360
Specific Heat Capacity, J/kg-K 980
490
Thermal Conductivity, W/m-K 44 to 58
15
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11 to 12
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 53 to 62
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 22
3.3
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 14
260
Resilience: Unit (Modulus of Resilience), kJ/m3 73 to 220
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 26 to 41
25
Strength to Weight: Bending, points 38 to 51
22
Thermal Diffusivity, mm2/s 25 to 33
4.0
Thermal Shock Resistance, points 10 to 16
15

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0
62.8 to 68.4
Magnesium (Mg), % 86.7 to 90
0
Manganese (Mn), % 0.1 to 0.35
0 to 0.8
Nickel (Ni), % 0 to 0.010
10 to 12
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.3
1.4 to 2.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 1.6 to 2.4
0
Residuals, % 0 to 0.3
0