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ASTM A387 Grade 12 Steel vs. AWS BVAg-18

ASTM A387 grade 12 steel belongs to the iron alloys classification, while AWS BVAg-18 belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is AWS BVAg-18.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
82
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 73
30
Tensile Strength: Ultimate (UTS), MPa 470 to 520
180

Thermal Properties

Latent Heat of Fusion, J/g 250
140
Melting Completion (Liquidus), °C 1470
720
Melting Onset (Solidus), °C 1420
600
Specific Heat Capacity, J/kg-K 470
280
Thermal Expansion, µm/m-K 13
19

Otherwise Unclassified Properties

Density, g/cm3 7.8
9.7
Embodied Carbon, kg CO2/kg material 1.6
59
Embodied Energy, MJ/kg 21
930

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 24
15
Strength to Weight: Axial, points 16 to 18
5.1
Strength to Weight: Bending, points 17 to 18
7.3
Thermal Shock Resistance, points 14 to 15
8.1

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.050 to 0.17
0 to 0.0050
Chromium (Cr), % 0.8 to 1.2
0
Copper (Cu), % 0
28.5 to 31.5
Iron (Fe), % 97 to 98.2
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.4 to 0.65
0
Molybdenum (Mo), % 0.45 to 0.6
0
Phosphorus (P), % 0 to 0.025
0 to 0.0020
Silicon (Si), % 0.15 to 0.4
0
Silver (Ag), % 0
59 to 61
Sulfur (S), % 0 to 0.025
0
Tin (Sn), % 0
9.5 to 10.5
Zinc (Zn), % 0
0 to 0.0010