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ASTM A387 Grade 91 Class 2 vs. EN-MC35110 Magnesium

ASTM A387 grade 91 class 2 belongs to the iron alloys classification, while EN-MC35110 magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 A387 grade 91 class 2 and the bottom bar is EN-MC35110 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
63
Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 20
3.1
Fatigue Strength, MPa 330
110
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Shear Strength, MPa 420
130
Tensile Strength: Ultimate (UTS), MPa 670
230
Tensile Strength: Yield (Proof), MPa 470
150

Thermal Properties

Latent Heat of Fusion, J/g 270
330
Maximum Temperature: Mechanical, °C 600
140
Melting Completion (Liquidus), °C 1460
600
Melting Onset (Solidus), °C 1420
520
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 26
110
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
27
Electrical Conductivity: Equal Weight (Specific), % IACS 10
130

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
18
Density, g/cm3 7.8
1.9
Embodied Carbon, kg CO2/kg material 2.6
24
Embodied Energy, MJ/kg 37
170
Embodied Water, L/kg 88
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 580
260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
63
Strength to Weight: Axial, points 24
34
Strength to Weight: Bending, points 22
44
Thermal Diffusivity, mm2/s 6.9
61
Thermal Shock Resistance, points 19
14

Alloy Composition

Aluminum (Al), % 0 to 0.020
0
Carbon (C), % 0.080 to 0.12
0
Chromium (Cr), % 8.0 to 9.5
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 87.3 to 90.3
0 to 0.010
Magnesium (Mg), % 0
92 to 95.4
Manganese (Mn), % 0.3 to 0.6
0 to 0.15
Molybdenum (Mo), % 0.85 to 1.1
0
Nickel (Ni), % 0 to 0.4
0 to 0.0050
Niobium (Nb), % 0.060 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.2 to 0.5
0 to 0.010
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0 to 0.010
0
Unspecified Rare Earths, % 0
0.75 to 1.8
Vanadium (V), % 0.18 to 0.25
0
Zinc (Zn), % 0
3.5 to 5.0
Zirconium (Zr), % 0 to 0.010
0.4 to 1.0
Residuals, % 0
0 to 0.010