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AZ61A Magnesium vs. EN 1.4859 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.4859 stainless steel belongs to the iron alloys. There are 29 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 AZ61A magnesium and the bottom bar is EN 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
23
Fatigue Strength, MPa 130
140
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Tensile Strength: Ultimate (UTS), MPa 280
490
Tensile Strength: Yield (Proof), MPa 170
210

Thermal Properties

Latent Heat of Fusion, J/g 350
310
Maximum Temperature: Mechanical, °C 120
1050
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 530
1360
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 79
13
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 62
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
36
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 23
6.2
Embodied Energy, MJ/kg 160
88
Embodied Water, L/kg 980
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
91
Resilience: Unit (Modulus of Resilience), kJ/m3 310
110
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
24
Strength to Weight: Axial, points 46
17
Strength to Weight: Bending, points 56
17
Thermal Diffusivity, mm2/s 47
3.4
Thermal Shock Resistance, points 17
11

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
19 to 21
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
40.3 to 49
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.0050
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0.5 to 1.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0