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ASTM Grade HT Steel vs. EN-MC21210 Magnesium

ASTM grade HT steel belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 HT steel and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
48
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 4.6
14
Fatigue Strength, MPa 130
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
17
Tensile Strength: Ultimate (UTS), MPa 500
190
Tensile Strength: Yield (Proof), MPa 270
90

Thermal Properties

Latent Heat of Fusion, J/g 310
350
Maximum Temperature: Mechanical, °C 1010
100
Melting Completion (Liquidus), °C 1390
600
Melting Onset (Solidus), °C 1340
570
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 12
120
Thermal Expansion, µm/m-K 15
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
24
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
130

Otherwise Unclassified Properties

Base Metal Price, % relative 31
12
Density, g/cm3 8.0
1.6
Embodied Carbon, kg CO2/kg material 5.4
24
Embodied Energy, MJ/kg 76
160
Embodied Water, L/kg 190
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
22
Resilience: Unit (Modulus of Resilience), kJ/m3 180
92
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
72
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
44
Thermal Diffusivity, mm2/s 3.2
76
Thermal Shock Resistance, points 12
11

Alloy Composition


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Aluminum (Al), % 0
1.6 to 2.6
Carbon (C), % 0.35 to 0.75
0
Chromium (Cr), % 15 to 19
0
Copper (Cu), % 0
0 to 0.010
Iron (Fe), % 38.2 to 51.7
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), % 0 to 0.5
0
Nickel (Ni), % 33 to 37
0 to 0.0020
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010