70Ag-30Ni Alloy vs. AWS BNi-7

70Ag-30Ni alloy belongs to the otherwise unclassified metals classification, while AWS BNi-7 belongs to the nickel alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 15 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is 70Ag-30Ni alloy and the bottom bar is AWS BNi-7.

70-Silver 30-Nickel Electrical Contact Alloy AWS BNi-7 (N99710) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		100
Elastic (Young's, Tensile) Modulus, GPa		170

Poisson's Ratio		0.35
Poisson's Ratio		0.3

Shear Modulus, GPa		39
Shear Modulus, GPa		67

Tensile Strength: Ultimate (UTS), MPa		320 to 530
Tensile Strength: Ultimate (UTS), MPa		550

Thermal Properties

Latent Heat of Fusion, J/g		170
Latent Heat of Fusion, J/g		280

Melting Completion (Liquidus), °C		960
Melting Completion (Liquidus), °C		890

Melting Onset (Solidus), °C		960
Melting Onset (Solidus), °C		890

Specific Heat Capacity, J/kg-K		300
Specific Heat Capacity, J/kg-K		490

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.0

Common Calculations

Stiffness to Weight: Axial, points		5.8
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		16
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		8.8 to 15
Strength to Weight: Axial, points		19

Strength to Weight: Bending, points		10 to 15
Strength to Weight: Bending, points		19

Thermal Shock Resistance, points		13 to 21
Thermal Shock Resistance, points		21

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.050

Boron (B), %		0
Boron (B), %		0 to 0.010

Carbon (C), %		0
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0
Chromium (Cr), %		13 to 15

Cobalt (Co), %		0
Cobalt (Co), %		0 to 0.1

Iron (Fe), %		0
Iron (Fe), %		0 to 0.2

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.040

Nickel (Ni), %		28.8 to 31
Nickel (Ni), %		73.3 to 77.3

Phosphorus (P), %		0
Phosphorus (P), %		9.7 to 10.5

Selenium (Se), %		0
Selenium (Se), %		0 to 0.0050

Silicon (Si), %		0
Silicon (Si), %		0 to 0.1

Silver (Ag), %		69 to 71
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.020

Titanium (Ti), %		0
Titanium (Ti), %		0 to 0.050

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.050

Residuals, %		0
Residuals, %		0 to 0.5