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Z21721 Zinc vs. AWS BNi-1a

Z21721 zinc belongs to the zinc alloys classification, while AWS BNi-1a belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is Z21721 zinc and the bottom bar is AWS BNi-1a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 87
180
Poisson's Ratio 0.25
0.3
Shear Modulus, GPa 35
70
Tensile Strength: Ultimate (UTS), MPa 150
450

Thermal Properties

Latent Heat of Fusion, J/g 110
370
Melting Completion (Liquidus), °C 410
1080
Melting Onset (Solidus), °C 390
980
Specific Heat Capacity, J/kg-K 390
500
Thermal Expansion, µm/m-K 26
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
55
Density, g/cm3 6.6
8.0
Embodied Carbon, kg CO2/kg material 2.8
8.8
Embodied Energy, MJ/kg 53
120
Embodied Water, L/kg 340
240

Common Calculations

Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 6.4
16
Strength to Weight: Bending, points 9.6
16
Thermal Shock Resistance, points 4.8
15

Alloy Composition


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Aluminum (Al), % 0 to 0.0020
0 to 0.050
Boron (B), % 0
2.8 to 3.5
Cadmium (Cd), % 0 to 0.070
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 0 to 0.0050
0
Iron (Fe), % 0 to 0.010
4.0 to 5.0
Lead (Pb), % 0 to 1.0
0
Nickel (Ni), % 0
70.6 to 76.3
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
4.0 to 5.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.020
0 to 0.050
Zinc (Zn), % 98.9 to 100
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5