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ZE63A Magnesium vs. AISI 304 Stainless Steel

ZE63A magnesium belongs to the magnesium alloys classification, while AISI 304 stainless steel belongs to the iron alloys. There are 31 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 ZE63A magnesium and the bottom bar is AISI 304 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 73
170 to 360
Elastic (Young's, Tensile) Modulus, GPa 46
200
Elongation at Break, % 7.7
8.0 to 43
Fatigue Strength, MPa 120
210 to 440
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Shear Strength, MPa 170
400 to 690
Tensile Strength: Ultimate (UTS), MPa 300
580 to 1180
Tensile Strength: Yield (Proof), MPa 190
230 to 860

Thermal Properties

Latent Heat of Fusion, J/g 330
290
Maximum Temperature: Mechanical, °C 170
710
Melting Completion (Liquidus), °C 510
1450
Melting Onset (Solidus), °C 390
1400
Specific Heat Capacity, J/kg-K 950
480
Thermal Conductivity, W/m-K 110
16
Thermal Expansion, µm/m-K 27
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
15
Density, g/cm3 2.0
7.8
Embodied Carbon, kg CO2/kg material 24
3.0
Embodied Energy, MJ/kg 180
43
Embodied Water, L/kg 920
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
86 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 400
140 to 1870
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 58
25
Strength to Weight: Axial, points 40
21 to 42
Strength to Weight: Bending, points 48
20 to 32
Thermal Diffusivity, mm2/s 57
4.2
Thermal Shock Resistance, points 17
12 to 25

Alloy Composition

Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
66.5 to 74
Magnesium (Mg), % 89.6 to 92
0
Manganese (Mn), % 0
0 to 2.0
Nickel (Ni), % 0 to 0.010
8.0 to 10.5
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.1 to 3.0
0
Zinc (Zn), % 5.5 to 6.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0