ASTM B522 Class II vs. AWS BNi-11

ASTM B522 class II belongs to the otherwise unclassified metals classification, while AWS BNi-11 belongs to the nickel alloys. There are 15 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM B522 class II and the bottom bar is AWS BNi-11.

ASTM B522 Class II Gold-Silver-Platinum Electrical Contact Alloy AWS BNi-11 (N99624) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		96
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.41
Poisson's Ratio		0.3

Shear Modulus, GPa		34
Shear Modulus, GPa		74

Tensile Strength: Ultimate (UTS), MPa		280 to 490
Tensile Strength: Ultimate (UTS), MPa		600

Thermal Properties

Latent Heat of Fusion, J/g		77
Latent Heat of Fusion, J/g		340

Melting Completion (Liquidus), °C		1030
Melting Completion (Liquidus), °C		1100

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		970

Specific Heat Capacity, J/kg-K		160
Specific Heat Capacity, J/kg-K		450

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		17
Density, g/cm³		9.1

Common Calculations

Stiffness to Weight: Axial, points		3.1
Stiffness to Weight: Axial, points		12

Stiffness to Weight: Bending, points		8.9
Stiffness to Weight: Bending, points		21

Strength to Weight: Axial, points		4.4 to 7.8
Strength to Weight: Axial, points		18

Strength to Weight: Bending, points		5.5 to 8.0
Strength to Weight: Bending, points		17

Thermal Shock Resistance, points		13 to 24
Thermal Shock Resistance, points		20

Alloy Composition

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

Boron (B), %		0
Boron (B), %		2.2 to 3.1

Carbon (C), %		0
Carbon (C), %		0.3 to 0.5

Chromium (Cr), %		0
Chromium (Cr), %		9.0 to 11.8

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

Gold (Au), %		68.5 to 69.5
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		2.5 to 4.0

Nickel (Ni), %		0
Nickel (Ni), %		62.9 to 71.2

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.020

Platinum (Pt), %		5.5 to 6.5
Platinum (Pt), %		0

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

Silicon (Si), %		0
Silicon (Si), %		3.4 to 4.3

Silver (Ag), %		24.5 to 25.5
Silver (Ag), %		0

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0 to 0.020

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

Tungsten (W), %		0
Tungsten (W), %		11.5 to 12.8

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

Residuals, %		0
Residuals, %		0 to 0.5