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ASTM Grade HL Steel vs. M1A Magnesium

ASTM grade HL steel belongs to the iron alloys classification, while M1A magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 HL steel and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 11
5.5
Fatigue Strength, MPa 150
88
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
18
Tensile Strength: Ultimate (UTS), MPa 500
230
Tensile Strength: Yield (Proof), MPa 270
130

Thermal Properties

Latent Heat of Fusion, J/g 320
350
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1390
610
Melting Onset (Solidus), °C 1340
580
Specific Heat Capacity, J/kg-K 490
990
Thermal Expansion, µm/m-K 17
26

Otherwise Unclassified Properties

Base Metal Price, % relative 27
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 4.5
24
Embodied Energy, MJ/kg 65
160
Embodied Water, L/kg 210
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
11
Resilience: Unit (Modulus of Resilience), kJ/m3 180
180
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 18
38
Strength to Weight: Bending, points 18
49
Thermal Shock Resistance, points 11
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0.2 to 0.6
0
Chromium (Cr), % 28 to 32
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 40.8 to 53.8
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0 to 2.0
1.2 to 2.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Residuals, % 0
0 to 0.3