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Grade CW6MC Nickel vs. AWS BNi-5a

Both grade CW6MC nickel and AWS BNi-5a are nickel alloys. They have 82% of their average alloy composition in common. There are 19 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 grade CW6MC nickel and the bottom bar is AWS BNi-5a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 540
480

Thermal Properties

Latent Heat of Fusion, J/g 330
420
Melting Completion (Liquidus), °C 1480
1150
Melting Onset (Solidus), °C 1430
1070
Specific Heat Capacity, J/kg-K 440
500
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
55
Density, g/cm3 8.6
7.9
Embodied Carbon, kg CO2/kg material 14
9.0
Embodied Energy, MJ/kg 200
130
Embodied Water, L/kg 290
260

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 18
17
Strength to Weight: Bending, points 17
17
Thermal Shock Resistance, points 15
15

Alloy Composition


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Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
1.0 to 1.5
Carbon (C), % 0 to 0.060
0 to 0.1
Chromium (Cr), % 20 to 23
18.5 to 19.5
Cobalt (Co), % 0
0 to 0.1
Iron (Fe), % 0 to 5.0
0 to 0.5
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 8.0 to 10
0
Nickel (Ni), % 55.4 to 68.9
70.1 to 73.5
Niobium (Nb), % 3.2 to 4.5
0
Phosphorus (P), % 0 to 0.015
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0 to 1.0
7.0 to 7.5
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5