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AWS BVAg-31 vs. Grey Cast Iron

AWS BVAg-31 belongs to the otherwise unclassified metals classification, while grey cast iron belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-31 and the bottom bar is grey cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 90
180
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 33
69
Tensile Strength: Ultimate (UTS), MPa 180
160 to 450

Thermal Properties

Latent Heat of Fusion, J/g 150
280
Melting Completion (Liquidus), °C 850
1380
Melting Onset (Solidus), °C 820
1180
Specific Heat Capacity, J/kg-K 280
490
Thermal Expansion, µm/m-K 18
11

Otherwise Unclassified Properties

Density, g/cm3 10
7.5

Common Calculations

Stiffness to Weight: Axial, points 4.9
13
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.9
5.8 to 17
Strength to Weight: Bending, points 7.0
8.7 to 17
Thermal Shock Resistance, points 7.8
6.0 to 17

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
3.1 to 3.4
Copper (Cu), % 31 to 33
0
Iron (Fe), % 0
92.1 to 93.9
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0.5 to 0.7
Palladium (Pd), % 8.0 to 12
0
Phosphorus (P), % 0 to 0.0020
0 to 0.9
Silicon (Si), % 0
2.5 to 2.8
Silver (Ag), % 57 to 59
0
Sulfur (S), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.0010
0