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AISI 409Cb Stainless Steel vs. AM60A Magnesium

AISI 409Cb stainless steel belongs to the iron alloys classification, while AM60A magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 409Cb stainless steel and the bottom bar is AM60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 24
8.8
Fatigue Strength, MPa 140
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 270
130
Tensile Strength: Ultimate (UTS), MPa 420
230
Tensile Strength: Yield (Proof), MPa 200
130

Thermal Properties

Latent Heat of Fusion, J/g 270
350
Maximum Temperature: Mechanical, °C 710
120
Melting Completion (Liquidus), °C 1450
620
Melting Onset (Solidus), °C 1410
550
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 25
62
Thermal Expansion, µm/m-K 10
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
13
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
69

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.2
23
Embodied Energy, MJ/kg 31
160
Embodied Water, L/kg 94
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83
17
Resilience: Unit (Modulus of Resilience), kJ/m3 100
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 15
37
Strength to Weight: Bending, points 16
49
Thermal Diffusivity, mm2/s 6.7
37
Thermal Shock Resistance, points 15
14

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 10.5 to 11.7
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 84.9 to 89.5
0
Magnesium (Mg), % 0
91.8 to 94.4
Manganese (Mn), % 0 to 1.0
0.13 to 0.6
Nickel (Ni), % 0 to 0.5
0 to 0.030
Niobium (Nb), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.22