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ISO-WD32250 Magnesium vs. N08800 Stainless Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while N08800 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 ISO-WD32250 magnesium and the bottom bar is N08800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.5 to 8.6
4.5 to 34
Fatigue Strength, MPa 170 to 210
150 to 390
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 180 to 190
340 to 580
Tensile Strength: Ultimate (UTS), MPa 310 to 330
500 to 1000
Tensile Strength: Yield (Proof), MPa 240 to 290
190 to 830

Thermal Properties

Latent Heat of Fusion, J/g 340
300
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 550
1360
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 130
12
Thermal Expansion, µm/m-K 26
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 130
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 13
30
Density, g/cm3 1.8
8.0
Embodied Carbon, kg CO2/kg material 24
5.3
Embodied Energy, MJ/kg 160
76
Embodied Water, L/kg 950
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
42 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
96 to 1740
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
24
Strength to Weight: Axial, points 49 to 51
18 to 35
Strength to Weight: Bending, points 58 to 60
18 to 28
Thermal Diffusivity, mm2/s 72
3.0
Thermal Shock Resistance, points 19 to 20
13 to 25

Alloy Composition


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Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0
0 to 0.75
Iron (Fe), % 0
39.5 to 50.7
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
30 to 35
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0