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Annealed S17600 Stainless Steel vs. AZ31B-O Magnesium

Annealed S17600 stainless steel belongs to the iron alloys classification, while AZ31B-O magnesium belongs to the magnesium alloys. There are 31 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 annealed S17600 stainless steel and the bottom bar is AZ31B-O magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
56
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 8.6
12
Fatigue Strength, MPa 300
120
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Shear Strength, MPa 560
140
Tensile Strength: Ultimate (UTS), MPa 940
240
Tensile Strength: Yield (Proof), MPa 580
120

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Maximum Temperature: Mechanical, °C 890
150
Melting Completion (Liquidus), °C 1430
600
Melting Onset (Solidus), °C 1390
600
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 15
100
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
18
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
95

Otherwise Unclassified Properties

Base Metal Price, % relative 13
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.9
23
Embodied Energy, MJ/kg 42
160
Embodied Water, L/kg 130
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
25
Resilience: Unit (Modulus of Resilience), kJ/m3 850
170
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
70
Strength to Weight: Axial, points 34
39
Strength to Weight: Bending, points 28
50
Thermal Diffusivity, mm2/s 4.1
62
Thermal Shock Resistance, points 31
14

Alloy Composition

Aluminum (Al), % 0 to 0.4
2.4 to 3.6
Calcium (Ca), % 0
0 to 0.040
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 16 to 17.5
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 71.3 to 77.6
0 to 0.050
Magnesium (Mg), % 0
93.6 to 97.1
Manganese (Mn), % 0 to 1.0
0.050 to 1.0
Nickel (Ni), % 6.0 to 7.5
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0.4 to 1.2
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3