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AZ91D Magnesium vs. AISI 410Cb Stainless Steel

AZ91D magnesium belongs to the magnesium alloys classification, while AISI 410Cb stainless steel belongs to the iron alloys. There are 31 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 AZ91D magnesium and the bottom bar is AISI 410Cb stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 80
200 to 270
Elastic (Young's, Tensile) Modulus, GPa 46
190
Elongation at Break, % 2.3 to 4.5
15
Fatigue Strength, MPa 74 to 85
180 to 460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
76
Shear Strength, MPa 120 to 140
340 to 590
Tensile Strength: Ultimate (UTS), MPa 160 to 220
550 to 960
Tensile Strength: Yield (Proof), MPa 80 to 130
310 to 790

Thermal Properties

Latent Heat of Fusion, J/g 350
270
Maximum Temperature: Mechanical, °C 130
730
Melting Completion (Liquidus), °C 600
1450
Melting Onset (Solidus), °C 490
1400
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 78
27
Thermal Expansion, µm/m-K 27
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 58
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
7.5
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 22
2.0
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 990
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.2 to 7.7
70 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 69 to 170
240 to 1600
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 26 to 34
20 to 35
Strength to Weight: Bending, points 38 to 46
19 to 28
Thermal Diffusivity, mm2/s 45
7.3
Thermal Shock Resistance, points 9.5 to 13
20 to 35

Alloy Composition

Aluminum (Al), % 8.3 to 9.7
0
Carbon (C), % 0
0 to 0.18
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.0050
84.5 to 89
Magnesium (Mg), % 88.7 to 91.2
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.0020
0
Niobium (Nb), % 0
0.050 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.35 to 1.0
0