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AZ61A Magnesium vs. AISI 317LMN Stainless Steel

AZ61A magnesium belongs to the magnesium alloys classification, while AISI 317LMN stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (6, 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 AISI 317LMN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 11
45
Fatigue Strength, MPa 130
250
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
79
Shear Strength, MPa 150
430
Tensile Strength: Ultimate (UTS), MPa 280
620
Tensile Strength: Yield (Proof), MPa 170
270

Thermal Properties

Latent Heat of Fusion, J/g 350
290
Maximum Temperature: Mechanical, °C 120
1020
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 530
1410
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 79
14
Thermal Expansion, µm/m-K 27
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 62
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.7
8.0
Embodied Carbon, kg CO2/kg material 23
4.8
Embodied Energy, MJ/kg 160
65
Embodied Water, L/kg 980
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
230
Resilience: Unit (Modulus of Resilience), kJ/m3 310
180
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 69
25
Strength to Weight: Axial, points 46
22
Strength to Weight: Bending, points 56
20
Thermal Diffusivity, mm2/s 47
3.8
Thermal Shock Resistance, points 17
14

Alloy Composition


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Aluminum (Al), % 5.5 to 7.2
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
17 to 20
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.0050
54.4 to 65.4
Magnesium (Mg), % 90.3 to 93.9
0
Manganese (Mn), % 0.15 to 0.5
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0 to 0.0050
13.5 to 17.5
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.1
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0.4 to 1.5
0
Residuals, % 0 to 0.3
0