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AISI 310HCb Stainless Steel vs. AZ91B Magnesium

AISI 310HCb 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 (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 AISI 310HCb stainless steel and the bottom bar is AZ91B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
63
Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 46
5.0
Fatigue Strength, MPa 210
79
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
18
Shear Strength, MPa 410
140
Tensile Strength: Ultimate (UTS), MPa 590
240
Tensile Strength: Yield (Proof), MPa 230
160

Thermal Properties

Latent Heat of Fusion, J/g 300
360
Maximum Temperature: Mechanical, °C 1100
130
Melting Completion (Liquidus), °C 1410
600
Melting Onset (Solidus), °C 1370
470
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 15
73
Thermal Expansion, µm/m-K 16
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
58

Otherwise Unclassified Properties

Base Metal Price, % relative 28
12
Density, g/cm3 7.9
1.7
Embodied Carbon, kg CO2/kg material 4.8
22
Embodied Energy, MJ/kg 69
160
Embodied Water, L/kg 190
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
11
Resilience: Unit (Modulus of Resilience), kJ/m3 130
280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
69
Strength to Weight: Axial, points 21
38
Strength to Weight: Bending, points 20
49
Thermal Diffusivity, mm2/s 3.9
42
Thermal Shock Resistance, points 13
14

Alloy Composition

Aluminum (Al), % 0
8.3 to 9.7
Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 48 to 57
0
Magnesium (Mg), % 0
87.9 to 91.2
Manganese (Mn), % 0 to 2.0
0.13 to 0.5
Nickel (Ni), % 19 to 22
0 to 0.030
Niobium (Nb), % 0 to 1.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.35 to 1.0