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EN 1.4525 Stainless Steel vs. QE22A Magnesium

EN 1.4525 stainless steel belongs to the iron alloys classification, while QE22A magnesium belongs to the magnesium alloys. There are 27 material properties with values for both materials. Properties with values for just one material (9, 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 1.4525 stainless steel and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 5.6 to 13
2.4
Fatigue Strength, MPa 480 to 540
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Tensile Strength: Ultimate (UTS), MPa 1030 to 1250
250
Tensile Strength: Yield (Proof), MPa 840 to 1120
190

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Mechanical, °C 860
250
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1390
570
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 18
110
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
120

Otherwise Unclassified Properties

Density, g/cm3 7.8
2.0
Embodied Carbon, kg CO2/kg material 2.8
27
Embodied Energy, MJ/kg 39
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 68 to 130
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 1820 to 3230
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
60
Strength to Weight: Axial, points 36 to 45
36
Strength to Weight: Bending, points 29 to 33
46
Thermal Diffusivity, mm2/s 4.7
59
Thermal Shock Resistance, points 34 to 41
15

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 2.5 to 4.0
0 to 0.1
Iron (Fe), % 70.4 to 79
0
Magnesium (Mg), % 0
93.1 to 95.8
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.8
0
Nickel (Ni), % 3.5 to 5.5
0 to 0.010
Niobium (Nb), % 0 to 0.35
0
Nitrogen (N), % 0 to 0.050
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.8
0
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.025
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3