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EN 1.4971 Stainless Steel vs. EN-MC21210 Magnesium

EN 1.4971 stainless steel belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 1.4971 stainless steel and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
48
Elastic (Young's, Tensile) Modulus, GPa 210
44
Elongation at Break, % 34
14
Fatigue Strength, MPa 270
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
17
Shear Strength, MPa 530
110
Tensile Strength: Ultimate (UTS), MPa 800
190
Tensile Strength: Yield (Proof), MPa 340
90

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1100
100
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 450
1000
Thermal Conductivity, W/m-K 13
120
Thermal Expansion, µm/m-K 15
27

Otherwise Unclassified Properties

Base Metal Price, % relative 70
12
Density, g/cm3 8.4
1.6
Embodied Carbon, kg CO2/kg material 7.6
24
Embodied Energy, MJ/kg 110
160
Embodied Water, L/kg 300
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
22
Resilience: Unit (Modulus of Resilience), kJ/m3 280
92
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
72
Strength to Weight: Axial, points 26
32
Strength to Weight: Bending, points 23
44
Thermal Diffusivity, mm2/s 3.4
76
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0
1.6 to 2.6
Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.010
Iron (Fe), % 24.3 to 37.1
0 to 0.0050
Magnesium (Mg), % 0
96.3 to 98.3
Manganese (Mn), % 0 to 2.0
0.1 to 0.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0 to 0.0020
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.015
0
Tungsten (W), % 2.0 to 3.0
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010