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EN 1.4477 Stainless Steel vs. QE22A Magnesium

EN 1.4477 stainless steel belongs to the iron alloys classification, while QE22A 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 EN 1.4477 stainless steel and the bottom bar is QE22A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
80
Elastic (Young's, Tensile) Modulus, GPa 210
44
Elongation at Break, % 22 to 23
2.4
Fatigue Strength, MPa 420 to 490
110
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
17
Shear Strength, MPa 550 to 580
150
Tensile Strength: Ultimate (UTS), MPa 880 to 930
250
Tensile Strength: Yield (Proof), MPa 620 to 730
190

Thermal Properties

Latent Heat of Fusion, J/g 300
340
Maximum Temperature: Mechanical, °C 1100
250
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1380
570
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
120

Otherwise Unclassified Properties

Density, g/cm3 7.7
2.0
Embodied Carbon, kg CO2/kg material 3.7
27
Embodied Energy, MJ/kg 52
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180 to 190
5.5
Resilience: Unit (Modulus of Resilience), kJ/m3 940 to 1290
400
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
60
Strength to Weight: Axial, points 31 to 33
36
Strength to Weight: Bending, points 26 to 27
46
Thermal Diffusivity, mm2/s 3.5
59
Thermal Shock Resistance, points 23 to 25
15

Alloy Composition

Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 28 to 30
0
Copper (Cu), % 0 to 0.8
0 to 0.1
Iron (Fe), % 56.6 to 63.6
0
Magnesium (Mg), % 0
93.1 to 95.8
Manganese (Mn), % 0.8 to 1.5
0
Molybdenum (Mo), % 1.5 to 2.6
0
Nickel (Ni), % 5.8 to 7.5
0 to 0.010
Nitrogen (N), % 0.3 to 0.4
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.015
0
Unspecified Rare Earths, % 0
1.8 to 2.5
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3