ASTM B477 Au-Ni-Ag vs. C83400 Brass

ASTM B477 Au-Ni-Ag belongs to the otherwise unclassified metals classification, while C83400 brass belongs to the copper alloys. There are 18 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 B477 Au-Ni-Ag and the bottom bar is C83400 brass.

ASTM B477 Gold-Nickel-Silver Electrical Contact Alloy UNS C83400 Red Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		95
Elastic (Young's, Tensile) Modulus, GPa		110

Elongation at Break, %		5.5 to 11
Elongation at Break, %		30

Poisson's Ratio		0.41
Poisson's Ratio		0.33

Shear Modulus, GPa		34
Shear Modulus, GPa		42

Tensile Strength: Ultimate (UTS), MPa		310 to 550
Tensile Strength: Ultimate (UTS), MPa		240

Thermal Properties

Latent Heat of Fusion, J/g		80
Latent Heat of Fusion, J/g		200

Melting Completion (Liquidus), °C		1010
Melting Completion (Liquidus), °C		1040

Melting Onset (Solidus), °C		930
Melting Onset (Solidus), °C		1020

Specific Heat Capacity, J/kg-K		160
Specific Heat Capacity, J/kg-K		380

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		14
Electrical Conductivity: Equal Volume, % IACS		44

Electrical Conductivity: Equal Weight (Specific), % IACS		7.5
Electrical Conductivity: Equal Weight (Specific), % IACS		46

Otherwise Unclassified Properties

Density, g/cm³		17
Density, g/cm³		8.7

Common Calculations

Stiffness to Weight: Axial, points		3.1
Stiffness to Weight: Axial, points		7.2

Stiffness to Weight: Bending, points		8.9
Stiffness to Weight: Bending, points		19

Strength to Weight: Axial, points		5.0 to 9.0
Strength to Weight: Axial, points		7.7

Strength to Weight: Bending, points		6.0 to 8.8
Strength to Weight: Bending, points		9.9

Thermal Shock Resistance, points		16 to 28
Thermal Shock Resistance, points		8.4

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 0.0050

Antimony (Sb), %		0
Antimony (Sb), %		0 to 0.25

Copper (Cu), %		0
Copper (Cu), %		88 to 92

Gold (Au), %		74.2 to 75.8
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		0 to 0.25

Lead (Pb), %		0
Lead (Pb), %		0 to 0.5

Nickel (Ni), %		2.6 to 3.4
Nickel (Ni), %		0 to 1.0

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		0 to 0.0050

Silver (Ag), %		21.4 to 22.6
Silver (Ag), %		0

Sulfur (S), %		0
Sulfur (S), %		0 to 0.080

Tin (Sn), %		0
Tin (Sn), %		0 to 0.2

Zinc (Zn), %		0
Zinc (Zn), %		8.0 to 12

Residuals, %		0
Residuals, %		0 to 0.7