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ASTM Grade HH Steel vs. EN-MC65210 Magnesium

ASTM grade HH steel belongs to the iron alloys classification, while EN-MC65210 magnesium belongs to the magnesium 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 ASTM grade HH steel and the bottom bar is EN-MC65210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
80
Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 11
2.8
Fatigue Strength, MPa 150
110
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
17
Tensile Strength: Ultimate (UTS), MPa 580
270
Tensile Strength: Yield (Proof), MPa 270
200

Thermal Properties

Latent Heat of Fusion, J/g 310
340
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1400
610
Melting Onset (Solidus), °C 1360
540
Specific Heat Capacity, J/kg-K 480
970
Thermal Conductivity, W/m-K 14
110
Thermal Expansion, µm/m-K 17
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
110

Otherwise Unclassified Properties

Density, g/cm3 7.7
2.0
Embodied Carbon, kg CO2/kg material 3.7
27
Embodied Energy, MJ/kg 53
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 53
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 190
450
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
59
Strength to Weight: Axial, points 21
38
Strength to Weight: Bending, points 20
47
Thermal Diffusivity, mm2/s 3.8
58
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0.2 to 0.5
0
Chromium (Cr), % 24 to 28
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 52.9 to 64.8
0 to 0.010
Magnesium (Mg), % 0
92.6 to 95.6
Manganese (Mn), % 0 to 2.0
0 to 0.15
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 11 to 14
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.010
Silver (Ag), % 0
2.0 to 3.0
Sulfur (S), % 0 to 0.040
0
Unspecified Rare Earths, % 0
2.0 to 3.0
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0.4 to 1.0
Residuals, % 0
0 to 0.010