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AWS BVAg-8b vs. ASTM A369 Grade FP91

AWS BVAg-8b belongs to the otherwise unclassified metals classification, while ASTM A369 grade FP91 belongs to the iron alloys. 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 AWS BVAg-8b and the bottom bar is ASTM A369 grade FP91.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
190
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 31
75
Tensile Strength: Ultimate (UTS), MPa 170
670

Thermal Properties

Latent Heat of Fusion, J/g 140
270
Melting Completion (Liquidus), °C 800
1460
Melting Onset (Solidus), °C 780
1420
Specific Heat Capacity, J/kg-K 280
470
Thermal Expansion, µm/m-K 19
13

Otherwise Unclassified Properties

Density, g/cm3 10
7.8

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 15
25
Strength to Weight: Axial, points 4.7
24
Strength to Weight: Bending, points 6.8
22
Thermal Shock Resistance, points 7.6
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.020
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 26.8 to 29.2
0
Iron (Fe), % 0
87.3 to 90.3
Lead (Pb), % 0 to 0.0020
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0.3 to 0.7
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0 to 0.0020
0 to 0.025
Silicon (Si), % 0
0.2 to 0.5
Silver (Ag), % 70.5 to 72.5
0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0
0 to 0.010
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.010