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EN 1.4634 Stainless Steel vs. EN-MC65120 Magnesium

EN 1.4634 stainless steel belongs to the iron alloys classification, while EN-MC65120 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 EN 1.4634 stainless steel and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 21
3.1
Fatigue Strength, MPa 180
80
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Shear Strength, MPa 340
92
Tensile Strength: Ultimate (UTS), MPa 540
160
Tensile Strength: Yield (Proof), MPa 280
110

Thermal Properties

Latent Heat of Fusion, J/g 290
330
Maximum Temperature: Mechanical, °C 900
180
Melting Completion (Liquidus), °C 1430
590
Melting Onset (Solidus), °C 1390
520
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 21
100
Thermal Expansion, µm/m-K 10
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
25
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
120

Otherwise Unclassified Properties

Base Metal Price, % relative 13
25
Density, g/cm3 7.7
1.9
Embodied Carbon, kg CO2/kg material 2.9
25
Embodied Energy, MJ/kg 42
190
Embodied Water, L/kg 140
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
4.4
Resilience: Unit (Modulus of Resilience), kJ/m3 200
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
62
Strength to Weight: Axial, points 20
23
Strength to Weight: Bending, points 19
34
Thermal Diffusivity, mm2/s 5.8
56
Thermal Shock Resistance, points 19
9.8

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17.5 to 18.5
0
Copper (Cu), % 0 to 0.5
0 to 0.030
Iron (Fe), % 74.9 to 81.8
0 to 0.010
Magnesium (Mg), % 0
91.8 to 95.1
Manganese (Mn), % 0 to 1.0
0 to 0.15
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.0050
Niobium (Nb), % 0.3 to 1.0
0
Phosphorus (P), % 0 to 0.050
0
Silicon (Si), % 0.2 to 1.5
0 to 0.010
Sulfur (S), % 0 to 0.050
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Zinc (Zn), % 0
2.0 to 3.0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010