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ASTM A372 Grade M Steel vs. AWS BVAg-31

ASTM A372 grade M steel belongs to the iron alloys classification, while AWS BVAg-31 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade M steel and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
90
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 73
33
Tensile Strength: Ultimate (UTS), MPa 810 to 910
180

Thermal Properties

Latent Heat of Fusion, J/g 250
150
Melting Completion (Liquidus), °C 1460
850
Melting Onset (Solidus), °C 1420
820
Specific Heat Capacity, J/kg-K 470
280
Thermal Expansion, µm/m-K 13
18

Otherwise Unclassified Properties

Density, g/cm3 7.9
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.9
Stiffness to Weight: Bending, points 24
15
Strength to Weight: Axial, points 29 to 32
4.9
Strength to Weight: Bending, points 24 to 27
7.0
Thermal Shock Resistance, points 24 to 27
7.8

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.23
0 to 0.0050
Chromium (Cr), % 1.5 to 2.0
0
Copper (Cu), % 0
31 to 33
Iron (Fe), % 92.5 to 95.1
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.2 to 0.4
0
Molybdenum (Mo), % 0.4 to 0.6
0
Nickel (Ni), % 2.8 to 3.9
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0 to 0.015
0 to 0.0020
Silicon (Si), % 0 to 0.3
0
Silver (Ag), % 0
57 to 59
Sulfur (S), % 0 to 0.010
0
Vanadium (V), % 0 to 0.080
0
Zinc (Zn), % 0
0 to 0.0010