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ASTM B522 Class II vs. AWS BNi-1

ASTM B522 class II belongs to the otherwise unclassified metals classification, while AWS BNi-1 belongs to the nickel alloys. There are 15 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ASTM B522 class II and the bottom bar is AWS BNi-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 96
180
Poisson's Ratio 0.41
0.3
Shear Modulus, GPa 34
70
Tensile Strength: Ultimate (UTS), MPa 280 to 490
450

Thermal Properties

Latent Heat of Fusion, J/g 77
360
Melting Completion (Liquidus), °C 1030
1040
Melting Onset (Solidus), °C 1030
980
Specific Heat Capacity, J/kg-K 160
500
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Density, g/cm3 17
8.0

Common Calculations

Stiffness to Weight: Axial, points 3.1
13
Stiffness to Weight: Bending, points 8.9
24
Strength to Weight: Axial, points 4.4 to 7.8
16
Strength to Weight: Bending, points 5.5 to 8.0
16
Thermal Shock Resistance, points 13 to 24
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
2.8 to 3.5
Carbon (C), % 0
0.6 to 0.9
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Gold (Au), % 68.5 to 69.5
0
Iron (Fe), % 0
4.0 to 5.0
Nickel (Ni), % 0
69.8 to 75.7
Phosphorus (P), % 0
0 to 0.020
Platinum (Pt), % 5.5 to 6.5
0
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
4.0 to 5.0
Silver (Ag), % 24.5 to 25.5
0
Sulfur (S), % 0 to 0.010
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5