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AZ61A Magnesium vs. EN 1.4849 Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while EN 1.4849 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 1.4849 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 130
120
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
75
Tensile Strength: Ultimate (UTS), MPa 280
480
Tensile Strength: Yield (Proof), MPa 170
250

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 120
1020
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 530
1340
Specific Heat Capacity, J/kg-K 990
480
Thermal Conductivity, W/m-K 79
12
Thermal Expansion, µm/m-K 27
15

Otherwise Unclassified Properties

Base Metal Price, % relative 12
42
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 23
7.1
Embodied Energy, MJ/kg 160
100
Embodied Water, L/kg 980
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
18
Resilience: Unit (Modulus of Resilience), kJ/m3 310
160
Stiffness to Weight: Axial, points 15
13
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
3.2
Thermal Shock Resistance, points 17
11

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
18 to 21
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
32.6 to 43.5
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
36 to 39
Niobium (Nb), % 0
1.2 to 1.8
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), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0