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EN-MC21210 Magnesium vs. ASTM Grade HP Steel

EN-MC21210 magnesium belongs to the magnesium alloys classification, while ASTM grade HP steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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-MC21210 magnesium and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
140
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 14
5.1
Fatigue Strength, MPa 70
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 190
490
Tensile Strength: Yield (Proof), MPa 90
260

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 100
1100
Melting Completion (Liquidus), °C 600
1370
Melting Onset (Solidus), °C 570
1330
Specific Heat Capacity, J/kg-K 1000
480
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 27
16

Otherwise Unclassified Properties

Base Metal Price, % relative 12
34
Density, g/cm3 1.6
7.9
Embodied Carbon, kg CO2/kg material 24
5.8
Embodied Energy, MJ/kg 160
82
Embodied Water, L/kg 980
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
21
Resilience: Unit (Modulus of Resilience), kJ/m3 92
170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 72
25
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 44
17
Thermal Diffusivity, mm2/s 76
3.2
Thermal Shock Resistance, points 11
11

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0.35 to 0.75
Chromium (Cr), % 0
24 to 28
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
29.2 to 42.7
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.0020
33 to 37
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 2.5
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0