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ASTM B780 Alloy vs. AWS BNi-7

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while AWS BNi-7 belongs to the nickel alloys. There are 13 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
170
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 30
67
Tensile Strength: Ultimate (UTS), MPa 330 to 590
550

Thermal Properties

Latent Heat of Fusion, J/g 140
280
Specific Heat Capacity, J/kg-K 270
490
Thermal Expansion, µm/m-K 18
11

Otherwise Unclassified Properties

Density, g/cm3 10
8.0

Common Calculations

Stiffness to Weight: Axial, points 4.5
12
Stiffness to Weight: Bending, points 14
23
Strength to Weight: Axial, points 9.1 to 16
19
Strength to Weight: Bending, points 11 to 15
19
Thermal Shock Resistance, points 16 to 29
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0 to 0.010
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 23.5 to 25.7
0
Iron (Fe), % 0 to 0.050
0 to 0.2
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 0.040
Nickel (Ni), % 0.35 to 0.65
73.3 to 77.3
Phosphorus (P), % 0
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 74 to 76
0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.060
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5