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S17700 Stainless Steel vs. ZC63A Magnesium

S17700 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 (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 S17700 stainless steel and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 430
60
Elastic (Young's, Tensile) Modulus, GPa 200
48
Elongation at Break, % 1.0 to 23
3.3
Fatigue Strength, MPa 290 to 560
94
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
19
Shear Strength, MPa 740 to 940
130
Tensile Strength: Ultimate (UTS), MPa 1180 to 1650
220
Tensile Strength: Yield (Proof), MPa 430 to 1210
130

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 890
98
Melting Completion (Liquidus), °C 1440
550
Melting Onset (Solidus), °C 1400
470
Specific Heat Capacity, J/kg-K 480
950
Thermal Conductivity, W/m-K 15
120
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
140

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.7
2.1
Embodied Carbon, kg CO2/kg material 2.8
22
Embodied Energy, MJ/kg 40
150
Embodied Water, L/kg 150
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15 to 210
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3750
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
58
Strength to Weight: Axial, points 42 to 59
29
Strength to Weight: Bending, points 32 to 40
38
Thermal Diffusivity, mm2/s 4.1
58
Thermal Shock Resistance, points 39 to 54
12

Alloy Composition

Aluminum (Al), % 0.75 to 1.5
0
Carbon (C), % 0 to 0.090
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
2.4 to 3.0
Iron (Fe), % 70.5 to 76.8
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0 to 1.0
0.25 to 0.75
Nickel (Ni), % 6.5 to 7.8
0 to 0.010
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