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AISI 204 Stainless Steel vs. ZC63A Magnesium

AISI 204 stainless steel belongs to the iron alloys classification, while ZC63A magnesium belongs to the magnesium alloys. There are 31 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 AISI 204 stainless steel and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 330
60
Elastic (Young's, Tensile) Modulus, GPa 200
48
Elongation at Break, % 23 to 39
3.3
Fatigue Strength, MPa 320 to 720
94
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
19
Shear Strength, MPa 500 to 700
130
Tensile Strength: Ultimate (UTS), MPa 730 to 1100
220
Tensile Strength: Yield (Proof), MPa 380 to 1080
130

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 850
98
Melting Completion (Liquidus), °C 1410
550
Melting Onset (Solidus), °C 1370
470
Specific Heat Capacity, J/kg-K 480
950
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
13
Density, g/cm3 7.7
2.1
Embodied Carbon, kg CO2/kg material 2.4
22
Embodied Energy, MJ/kg 35
150
Embodied Water, L/kg 130
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240 to 250
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 2940
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
58
Strength to Weight: Axial, points 27 to 40
29
Strength to Weight: Bending, points 24 to 31
38
Thermal Diffusivity, mm2/s 4.1
58
Thermal Shock Resistance, points 16 to 24
12

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
2.4 to 3.0
Iron (Fe), % 69.6 to 76.4
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 7.0 to 9.0
0.25 to 0.75
Nickel (Ni), % 1.5 to 3.0
0 to 0.010
Nitrogen (N), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.2
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
5.5 to 6.5
Residuals, % 0
0 to 0.3