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EN 1.4020 Stainless Steel vs. M1A Magnesium

EN 1.4020 stainless steel belongs to the iron alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 1.4020 stainless steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 13 to 34
5.5
Fatigue Strength, MPa 340 to 540
88
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
18
Shear Strength, MPa 510 to 680
120
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
230
Tensile Strength: Yield (Proof), MPa 430 to 950
130

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Maximum Temperature: Mechanical, °C 890
95
Melting Completion (Liquidus), °C 1390
610
Melting Onset (Solidus), °C 1350
580
Specific Heat Capacity, J/kg-K 480
990
Thermal Expansion, µm/m-K 17
26

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 7.6
1.7
Embodied Carbon, kg CO2/kg material 2.5
24
Embodied Energy, MJ/kg 37
160
Embodied Water, L/kg 150
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
11
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 28 to 41
38
Strength to Weight: Bending, points 25 to 32
49
Thermal Shock Resistance, points 16 to 23
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 16.5 to 19
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 62.8 to 71.8
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 11 to 14
1.2 to 2.0
Nickel (Ni), % 0.5 to 2.5
0 to 0.010
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Residuals, % 0
0 to 0.3