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AZ61A Magnesium vs. EN 1.4057 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.4057 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 1.4057 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
11 to 17
Fatigue Strength, MPa 130
320 to 430
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 150
520 to 580
Tensile Strength: Ultimate (UTS), MPa 280
840 to 980
Tensile Strength: Yield (Proof), MPa 170
530 to 790

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
850
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 79
25
Thermal Expansion, µm/m-K 27
10

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
9.5
Density, g/cm3 1.7
7.7
Embodied Carbon, kg CO2/kg material 23
2.2
Embodied Energy, MJ/kg 160
32
Embodied Water, L/kg 980
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
96 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 310
700 to 1610
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 46
30 to 35
Strength to Weight: Bending, points 56
26 to 28
Thermal Diffusivity, mm2/s 47
6.7
Thermal Shock Resistance, points 17
30 to 35

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.12 to 0.22
Chromium (Cr), % 0
15 to 17
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
77.7 to 83.4
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 1.5
Nickel (Ni), % 0 to 0.0050
1.5 to 2.5
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