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ASTM B628 Ag-Cu vs. AWS BNi-1a

ASTM B628 Ag-Cu belongs to the otherwise unclassified metals classification, while AWS BNi-1a belongs to the nickel alloys. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is AWS BNi-1a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
180
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 31
70
Tensile Strength: Ultimate (UTS), MPa 350 to 760
450

Thermal Properties

Latent Heat of Fusion, J/g 140
370
Melting Completion (Liquidus), °C 780
1080
Melting Onset (Solidus), °C 780
980
Specific Heat Capacity, J/kg-K 280
500
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Density, g/cm3 10
8.0

Common Calculations

Stiffness to Weight: Axial, points 4.6
13
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 9.5 to 21
16
Strength to Weight: Bending, points 11 to 18
16
Thermal Shock Resistance, points 16 to 34
15

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.050
Boron (B), % 0
2.8 to 3.5
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), % 26.6 to 29
0
Iron (Fe), % 0 to 0.050
4.0 to 5.0
Lead (Pb), % 0 to 0.030
0
Nickel (Ni), % 0 to 0.010
70.6 to 76.3
Phosphorus (P), % 0 to 0.030
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
4.0 to 5.0
Silver (Ag), % 71 to 73
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 to 0.21
0 to 0.5