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ASTM A356 Grade 8 vs. AWS BVAg-8b

ASTM A356 grade 8 belongs to the iron alloys classification, while AWS BVAg-8b 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 A356 grade 8 and the bottom bar is AWS BVAg-8b.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
84
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 73
31
Tensile Strength: Ultimate (UTS), MPa 630
170

Thermal Properties

Latent Heat of Fusion, J/g 260
140
Melting Completion (Liquidus), °C 1470
800
Melting Onset (Solidus), °C 1430
780
Specific Heat Capacity, J/kg-K 470
280
Thermal Expansion, µm/m-K 13
19

Otherwise Unclassified Properties

Density, g/cm3 7.8
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 24
15
Strength to Weight: Axial, points 22
4.7
Strength to Weight: Bending, points 21
6.8
Thermal Shock Resistance, points 18
7.6

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0 to 0.2
0 to 0.0050
Chromium (Cr), % 1.0 to 1.5
0
Copper (Cu), % 0
26.8 to 29.2
Iron (Fe), % 95.4 to 97.4
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.5 to 0.9
0
Molybdenum (Mo), % 0.9 to 1.2
0
Nickel (Ni), % 0
0.3 to 0.7
Phosphorus (P), % 0 to 0.035
0 to 0.0020
Silicon (Si), % 0.2 to 0.6
0
Silver (Ag), % 0
70.5 to 72.5
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0
0 to 0.0010