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EN 1.4980 Stainless Steel vs. EQ21A Magnesium

EN 1.4980 stainless steel belongs to the iron alloys classification, while EQ21A 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 1.4980 stainless steel and the bottom bar is EQ21A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 17
2.4
Fatigue Strength, MPa 410
110
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 75
17
Shear Strength, MPa 630
150
Tensile Strength: Ultimate (UTS), MPa 1030
250
Tensile Strength: Yield (Proof), MPa 680
190

Thermal Properties

Latent Heat of Fusion, J/g 300
340
Maximum Temperature: Mechanical, °C 920
160
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1380
560
Specific Heat Capacity, J/kg-K 470
980
Thermal Conductivity, W/m-K 13
110
Thermal Expansion, µm/m-K 17
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
120

Otherwise Unclassified Properties

Base Metal Price, % relative 26
80
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 6.0
27
Embodied Energy, MJ/kg 87
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
63
Strength to Weight: Axial, points 36
37
Strength to Weight: Bending, points 28
47
Thermal Diffusivity, mm2/s 3.5
62
Thermal Shock Resistance, points 22
15

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.030 to 0.080
0
Chromium (Cr), % 13.5 to 16
0
Copper (Cu), % 0
0.050 to 0.1
Iron (Fe), % 49.2 to 58.5
0
Magnesium (Mg), % 0
93.9 to 96.8
Manganese (Mn), % 1.0 to 2.0
0
Molybdenum (Mo), % 1.0 to 1.5
0
Nickel (Ni), % 24 to 27
0 to 0.010
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
1.3 to 1.7
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 1.9 to 2.3
0
Unspecified Rare Earths, % 0
1.5 to 3.0
Vanadium (V), % 0.1 to 0.5
0
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.3