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S20910 Stainless Steel vs. ZE41A Magnesium

S20910 stainless steel belongs to the iron alloys classification, while ZE41A magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (8, 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 S20910 stainless steel and the bottom bar is ZE41A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
63
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 14 to 39
3.3
Fatigue Strength, MPa 310 to 460
98
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
18
Shear Strength, MPa 500 to 570
150
Tensile Strength: Ultimate (UTS), MPa 780 to 940
210
Tensile Strength: Yield (Proof), MPa 430 to 810
140

Thermal Properties

Latent Heat of Fusion, J/g 300
330
Maximum Temperature: Mechanical, °C 1080
150
Melting Completion (Liquidus), °C 1420
640
Melting Onset (Solidus), °C 1380
540
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 16
27

Otherwise Unclassified Properties

Base Metal Price, % relative 22
18
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 4.8
24
Embodied Energy, MJ/kg 68
170
Embodied Water, L/kg 180
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
6.1
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 28 to 33
31
Strength to Weight: Bending, points 24 to 27
41
Thermal Diffusivity, mm2/s 3.6
59
Thermal Shock Resistance, points 17 to 21
12

Alloy Composition

Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 52.1 to 62.1
0
Magnesium (Mg), % 0
91.7 to 95.4
Manganese (Mn), % 4.0 to 6.0
0 to 0.15
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.010
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3