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AWS BVAg-18 vs. Austempered Cast Iron

AWS BVAg-18 belongs to the otherwise unclassified metals classification, while austempered cast iron belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-18 and the bottom bar is austempered cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
180
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 30
62 to 69
Tensile Strength: Ultimate (UTS), MPa 180
860 to 1800

Thermal Properties

Latent Heat of Fusion, J/g 140
280
Melting Completion (Liquidus), °C 720
1380
Melting Onset (Solidus), °C 600
1340
Specific Heat Capacity, J/kg-K 280
490
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Density, g/cm3 9.7
7.5
Embodied Carbon, kg CO2/kg material 59
1.8
Embodied Energy, MJ/kg 930
25

Common Calculations

Stiffness to Weight: Axial, points 4.7
13
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 5.1
32 to 66
Strength to Weight: Bending, points 7.3
27 to 44
Thermal Shock Resistance, points 8.1
25 to 53

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.020
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
3.4 to 3.8
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 28.5 to 31.5
0 to 0.8
Iron (Fe), % 0
89.6 to 94
Lead (Pb), % 0 to 0.0020
0
Magnesium (Mg), % 0
0 to 0.040
Manganese (Mn), % 0
0.3 to 0.4
Molybdenum (Mo), % 0
0 to 0.3
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0 to 0.0020
0 to 0.040
Selenium (Se), % 0
0 to 0.030
Silicon (Si), % 0
2.3 to 2.7
Silver (Ag), % 59 to 61
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 9.5 to 10.5
0 to 0.020
Vanadium (V), % 0
0 to 0.1
Zinc (Zn), % 0 to 0.0010
0