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EN-MC65220 Magnesium vs. ASTM Grade HP Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while ASTM grade HP steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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-MC65220 magnesium and the bottom bar is ASTM grade HP steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
140
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.2
5.1
Fatigue Strength, MPa 110
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
78
Tensile Strength: Ultimate (UTS), MPa 270
490
Tensile Strength: Yield (Proof), MPa 200
260

Thermal Properties

Latent Heat of Fusion, J/g 340
320
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 610
1370
Melting Onset (Solidus), °C 550
1330
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 110
12
Thermal Expansion, µm/m-K 26
16

Otherwise Unclassified Properties

Base Metal Price, % relative 80
34
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 27
5.8
Embodied Energy, MJ/kg 210
82

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
21
Resilience: Unit (Modulus of Resilience), kJ/m3 450
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 62
25
Strength to Weight: Axial, points 40
17
Strength to Weight: Bending, points 49
17
Thermal Diffusivity, mm2/s 61
3.2
Thermal Shock Resistance, points 17
11

Alloy Composition


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Carbon (C), % 0
0.35 to 0.75
Chromium (Cr), % 0
24 to 28
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
29.2 to 42.7
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.0050
33 to 37
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 2.5
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.040
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0