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AM60A Magnesium vs. S31260 Stainless Steel

AM60A magnesium belongs to the magnesium alloys classification, while S31260 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 AM60A magnesium and the bottom bar is S31260 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 62
260
Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 8.8
23
Fatigue Strength, MPa 70
370
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 18
80
Shear Strength, MPa 130
500
Tensile Strength: Ultimate (UTS), MPa 230
790
Tensile Strength: Yield (Proof), MPa 130
540

Thermal Properties

Latent Heat of Fusion, J/g 350
300
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 620
1450
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 62
16
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 69
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
20
Density, g/cm3 1.7
7.8
Embodied Carbon, kg CO2/kg material 23
3.9
Embodied Energy, MJ/kg 160
53
Embodied Water, L/kg 990
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
160
Resilience: Unit (Modulus of Resilience), kJ/m3 190
720
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 71
25
Strength to Weight: Axial, points 37
28
Strength to Weight: Bending, points 49
24
Thermal Diffusivity, mm2/s 37
4.3
Thermal Shock Resistance, points 14
22

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
24 to 26
Copper (Cu), % 0 to 0.35
0.2 to 0.8
Iron (Fe), % 0
59.6 to 67.6
Magnesium (Mg), % 91.8 to 94.4
0
Manganese (Mn), % 0.13 to 0.6
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.030
5.5 to 7.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
0.1 to 0.5
Zinc (Zn), % 0 to 0.22
0