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AM60B Magnesium vs. EN 1.4740 Stainless Steel

AM60B magnesium belongs to the magnesium alloys classification, while EN 1.4740 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62
260
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
22
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 120
900
Melting Completion (Liquidus), °C 620
1420
Melting Onset (Solidus), °C 540
1370
Specific Heat Capacity, J/kg-K 1000
490
Thermal Conductivity, W/m-K 61
18
Thermal Expansion, µm/m-K 26
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 72
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 1.7
7.6
Embodied Carbon, kg CO2/kg material 23
2.3
Embodied Energy, MJ/kg 160
32
Embodied Water, L/kg 990
120

Common Calculations

Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 71
25
Thermal Diffusivity, mm2/s 37
4.8

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
16 to 19
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
75.4 to 82.7
Magnesium (Mg), % 92.6 to 94.3
0
Manganese (Mn), % 0.24 to 0.6
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.22
0