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ASTM Grade HC Steel vs. AWS BMg-1

ASTM grade HC steel belongs to the iron alloys classification, while AWS BMg-1 belongs to the magnesium alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 HC steel and the bottom bar is AWS BMg-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
47
Elongation at Break, % 6.0
3.8
Fatigue Strength, MPa 96
72
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
18
Tensile Strength: Ultimate (UTS), MPa 430
180
Tensile Strength: Yield (Proof), MPa 200
110

Thermal Properties

Latent Heat of Fusion, J/g 310
350
Maximum Temperature: Mechanical, °C 1100
130
Melting Completion (Liquidus), °C 1410
600
Melting Onset (Solidus), °C 1370
440
Specific Heat Capacity, J/kg-K 490
980
Thermal Conductivity, W/m-K 17
76
Thermal Expansion, µm/m-K 11
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
11
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
55

Otherwise Unclassified Properties

Base Metal Price, % relative 14
12
Density, g/cm3 7.6
1.8
Embodied Carbon, kg CO2/kg material 2.8
22
Embodied Energy, MJ/kg 40
160
Embodied Water, L/kg 170
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21
5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 95
120
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
66
Strength to Weight: Axial, points 16
27
Strength to Weight: Bending, points 16
39
Thermal Diffusivity, mm2/s 4.5
43
Thermal Shock Resistance, points 14
10

Alloy Composition

Aluminum (Al), % 0
8.3 to 9.7
Beryllium (Be), % 0
0.00020 to 0.00080
Carbon (C), % 0 to 0.5
0
Chromium (Cr), % 26 to 30
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 61.9 to 74
0 to 0.0050
Magnesium (Mg), % 0
86.1 to 89.8
Manganese (Mn), % 0 to 1.0
0.15 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 4.0
0 to 0.0050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 2.0
0 to 0.050
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
1.7 to 2.3
Residuals, % 0
0 to 0.3