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S35000 Stainless Steel vs. ZK61A Magnesium

S35000 stainless steel belongs to the iron alloys classification, while ZK61A magnesium belongs to the magnesium alloys. There are 30 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 S35000 stainless steel and the bottom bar is ZK61A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
46
Elongation at Break, % 2.3 to 14
5.8 to 7.1
Fatigue Strength, MPa 380 to 520
120 to 140
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
18
Shear Strength, MPa 740 to 950
170 to 180
Tensile Strength: Ultimate (UTS), MPa 1300 to 1570
290 to 310
Tensile Strength: Yield (Proof), MPa 660 to 1160
180 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 900
120
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
530
Specific Heat Capacity, J/kg-K 470
960
Thermal Conductivity, W/m-K 16
120
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
130

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 3.2
23
Embodied Energy, MJ/kg 44
160
Embodied Water, L/kg 130
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 28 to 170
15 to 19
Resilience: Unit (Modulus of Resilience), kJ/m3 1070 to 3360
370 to 420
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 46 to 56
42 to 45
Strength to Weight: Bending, points 34 to 38
50 to 53
Thermal Diffusivity, mm2/s 4.4
65
Thermal Shock Resistance, points 42 to 51
17 to 18

Alloy Composition

Carbon (C), % 0.070 to 0.11
0
Chromium (Cr), % 16 to 17
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 72.7 to 76.9
0
Magnesium (Mg), % 0
92.1 to 93.9
Manganese (Mn), % 0.5 to 1.3
0
Molybdenum (Mo), % 2.5 to 3.2
0
Nickel (Ni), % 4.0 to 5.0
0 to 0.010
Nitrogen (N), % 0.070 to 0.13
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
5.5 to 6.5
Zirconium (Zr), % 0
0.6 to 1.0
Residuals, % 0
0 to 0.3

Comparable Variants