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AM60B Magnesium vs. AISI 445 Stainless Steel

AM60B magnesium belongs to the magnesium alloys classification, while AISI 445 stainless steel belongs to the iron alloys. There are 31 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 AM60B magnesium and the bottom bar is AISI 445 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62
160
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
25
Fatigue Strength, MPa 96
160
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Shear Strength, MPa 140
310
Tensile Strength: Ultimate (UTS), MPa 230
480
Tensile Strength: Yield (Proof), MPa 130
230

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 120
950
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 540
1390
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 61
21
Thermal Expansion, µm/m-K 26
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 72
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 23
2.6
Embodied Energy, MJ/kg 160
38
Embodied Water, L/kg 990
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
98
Resilience: Unit (Modulus of Resilience), kJ/m3 190
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 38
17
Strength to Weight: Bending, points 50
18
Thermal Diffusivity, mm2/s 37
5.6
Thermal Shock Resistance, points 14
16

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.010
0.3 to 0.6
Iron (Fe), % 0 to 0.0050
74.9 to 80.7
Magnesium (Mg), % 92.6 to 94.3
0
Manganese (Mn), % 0.24 to 0.6
0 to 1.0
Nickel (Ni), % 0 to 0.0020
0 to 0.6
Niobium (Nb), % 0
0 to 0.8
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.012
Zinc (Zn), % 0 to 0.22
0