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K1A Magnesium vs. EN 1.4594 Stainless Steel

K1A magnesium belongs to the magnesium alloys classification, while EN 1.4594 stainless steel belongs to the iron 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 K1A magnesium and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 43
200
Elongation at Break, % 13
11 to 17
Fatigue Strength, MPa 39
490 to 620
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
76
Shear Strength, MPa 55
620 to 700
Tensile Strength: Ultimate (UTS), MPa 180
1020 to 1170
Tensile Strength: Yield (Proof), MPa 51
810 to 1140

Thermal Properties

Latent Heat of Fusion, J/g 350
280
Maximum Temperature: Mechanical, °C 120
820
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 650
1410
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
16
Thermal Expansion, µm/m-K 27
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 170
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 24
3.2
Embodied Energy, MJ/kg 170
45
Embodied Water, L/kg 970
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17
110 to 190
Resilience: Unit (Modulus of Resilience), kJ/m3 30
1660 to 3320
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 73
25
Strength to Weight: Axial, points 31
36 to 41
Strength to Weight: Bending, points 43
29 to 31
Thermal Diffusivity, mm2/s 75
4.4
Thermal Shock Resistance, points 11
34 to 39

Alloy Composition


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Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
13 to 15
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 0
72.6 to 79.5
Magnesium (Mg), % 98.7 to 99.6
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
1.2 to 2.0
Nickel (Ni), % 0
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0
0 to 0.015
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.3
0