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N08135 Stainless Steel vs. ZK51A Magnesium

N08135 stainless steel belongs to the iron alloys classification, while ZK51A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 N08135 stainless steel and the bottom bar is ZK51A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 46
4.7
Fatigue Strength, MPa 220
62
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
18
Shear Strength, MPa 400
160
Tensile Strength: Ultimate (UTS), MPa 570
240
Tensile Strength: Yield (Proof), MPa 240
150

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Maximum Temperature: Mechanical, °C 1100
120
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1390
550
Specific Heat Capacity, J/kg-K 460
970
Thermal Expansion, µm/m-K 16
26

Otherwise Unclassified Properties

Base Metal Price, % relative 39
13
Density, g/cm3 8.2
1.8
Embodied Carbon, kg CO2/kg material 6.8
24
Embodied Energy, MJ/kg 94
160
Embodied Water, L/kg 220
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
10
Resilience: Unit (Modulus of Resilience), kJ/m3 140
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
64
Strength to Weight: Axial, points 19
36
Strength to Weight: Bending, points 19
47
Thermal Shock Resistance, points 13
15

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0 to 0.7
0 to 0.1
Iron (Fe), % 30.2 to 42.3
0
Magnesium (Mg), % 0
93.1 to 95.9
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 33 to 38
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0.2 to 0.8
0
Zinc (Zn), % 0
3.6 to 5.5
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3