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AWS BNi-7 vs. ASTM B522 Class I

AWS BNi-7 belongs to the nickel alloys classification, while ASTM B522 class I belongs to the otherwise unclassified metals. 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 AWS BNi-7 and the bottom bar is ASTM B522 class I.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170
96
Poisson's Ratio 0.3
0.41
Shear Modulus, GPa 67
34
Tensile Strength: Ultimate (UTS), MPa 550
280 to 490

Thermal Properties

Latent Heat of Fusion, J/g 280
77
Melting Completion (Liquidus), °C 890
1030
Melting Onset (Solidus), °C 890
1030
Specific Heat Capacity, J/kg-K 490
160
Thermal Expansion, µm/m-K 11
15

Otherwise Unclassified Properties

Density, g/cm3 8.0
17

Common Calculations

Stiffness to Weight: Axial, points 12
3.1
Stiffness to Weight: Bending, points 23
8.9
Strength to Weight: Axial, points 19
4.4 to 7.8
Strength to Weight: Bending, points 19
5.5 to 8.0
Thermal Shock Resistance, points 21
13 to 24

Alloy Composition

Aluminum (Al), % 0 to 0.050
0
Boron (B), % 0 to 0.010
0
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 13 to 15
0
Cobalt (Co), % 0 to 0.1
0
Gold (Au), % 0
68 to 70
Iron (Fe), % 0 to 0.2
0
Manganese (Mn), % 0 to 0.040
0
Nickel (Ni), % 73.3 to 77.3
0
Phosphorus (P), % 9.7 to 10.5
0
Platinum (Pt), % 0
5.0 to 7.0
Selenium (Se), % 0 to 0.0050
0
Silicon (Si), % 0 to 0.1
0
Silver (Ag), % 0
23.5 to 26.5
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0 to 0.050
0
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.35