AWS BAu-1 vs. AWS BNi-1a

AWS BAu-1 belongs to the otherwise unclassified metals classification, while AWS BNi-1a belongs to the nickel alloys. There are 16 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

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

AWS BAu-1 (P00375) Filler Metal AWS BNi-1a (N99610) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		180

Poisson's Ratio		0.37
Poisson's Ratio		0.3

Shear Modulus, GPa		40
Shear Modulus, GPa		70

Tensile Strength: Ultimate (UTS), MPa		210
Tensile Strength: Ultimate (UTS), MPa		450

Thermal Properties

Brazing Temperature, °C		1020 to 1090
Brazing Temperature, °C		1080 to 1200

Latent Heat of Fusion, J/g		150
Latent Heat of Fusion, J/g		370

Melting Completion (Liquidus), °C		1020
Melting Completion (Liquidus), °C		1080

Melting Onset (Solidus), °C		990
Melting Onset (Solidus), °C		980

Specific Heat Capacity, J/kg-K		290
Specific Heat Capacity, J/kg-K		500

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		13
Density, g/cm³		8.0

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		12
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		4.5
Strength to Weight: Axial, points		16

Strength to Weight: Bending, points		6.1
Strength to Weight: Bending, points		16

Thermal Shock Resistance, points		8.5
Thermal Shock Resistance, points		15

Alloy Composition

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

Boron (B), %		0
Boron (B), %		2.8 to 3.5

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

Copper (Cu), %		61.9 to 63
Copper (Cu), %		0

Gold (Au), %		37 to 38
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		4.0 to 5.0

Nickel (Ni), %		0
Nickel (Ni), %		70.6 to 76.3

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

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

Silicon (Si), %		0
Silicon (Si), %		4.0 to 5.0

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 to 0.15
Residuals, %		0 to 0.5