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AISI 410 Stainless Steel vs. AZ91B Magnesium

AISI 410 stainless steel belongs to the iron alloys classification, while AZ91B magnesium belongs to the magnesium 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 AISI 410 stainless steel and the bottom bar is AZ91B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 240
63
Elastic (Young's, Tensile) Modulus, GPa 190
46
Elongation at Break, % 16 to 22
5.0
Fatigue Strength, MPa 190 to 350
79
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
18
Shear Strength, MPa 330 to 470
140
Tensile Strength: Ultimate (UTS), MPa 520 to 770
240
Tensile Strength: Yield (Proof), MPa 290 to 580
160

Thermal Properties

Latent Heat of Fusion, J/g 270
360
Maximum Temperature: Mechanical, °C 710
130
Melting Completion (Liquidus), °C 1530
600
Melting Onset (Solidus), °C 1480
470
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 30
73
Thermal Expansion, µm/m-K 11
26

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
12
Density, g/cm3 7.7
1.7
Embodied Carbon, kg CO2/kg material 1.9
22
Embodied Energy, MJ/kg 27
160
Embodied Water, L/kg 100
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 110
11
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 860
280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
69
Strength to Weight: Axial, points 19 to 28
38
Strength to Weight: Bending, points 19 to 24
49
Thermal Diffusivity, mm2/s 8.1
42
Thermal Shock Resistance, points 18 to 26
14

Alloy Composition

Aluminum (Al), % 0
8.3 to 9.7
Carbon (C), % 0.080 to 0.15
0
Chromium (Cr), % 11.5 to 13.5
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 83.5 to 88.4
0
Magnesium (Mg), % 0
87.9 to 91.2
Manganese (Mn), % 0 to 1.0
0.13 to 0.5
Nickel (Ni), % 0 to 0.75
0 to 0.030
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.35 to 1.0