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AZ61A Magnesium vs. EN 1.4749 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.4749 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
16
Fatigue Strength, MPa 130
190
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
80
Shear Strength, MPa 150
370
Tensile Strength: Ultimate (UTS), MPa 280
600
Tensile Strength: Yield (Proof), MPa 170
320

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 530
1380
Specific Heat Capacity, J/kg-K 990
490
Thermal Conductivity, W/m-K 79
17
Thermal Expansion, µm/m-K 27
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 62
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
13
Density, g/cm3 1.7
7.6
Embodied Carbon, kg CO2/kg material 23
2.5
Embodied Energy, MJ/kg 160
36
Embodied Water, L/kg 980
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
80
Resilience: Unit (Modulus of Resilience), kJ/m3 310
250
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 69
26
Strength to Weight: Axial, points 46
22
Strength to Weight: Bending, points 56
21
Thermal Diffusivity, mm2/s 47
4.6
Thermal Shock Resistance, points 17
22

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.15 to 0.2
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
68.5 to 73.7
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.0050
0
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0