ASTM B522 Class I vs. AWS ENi-1

ASTM B522 class I belongs to the otherwise unclassified metals classification, while AWS ENi-1 belongs to the nickel alloys. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM B522 class I and the bottom bar is AWS ENi-1.

ASTM B522 Class I Gold-Silver-Platinum Electrical Contact Alloy AWS ENi-1 (W82141) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		96
Elastic (Young's, Tensile) Modulus, GPa		180

Elongation at Break, %		1.1 to 29
Elongation at Break, %		22

Poisson's Ratio		0.41
Poisson's Ratio		0.31

Shear Modulus, GPa		34
Shear Modulus, GPa		69

Tensile Strength: Ultimate (UTS), MPa		280 to 490
Tensile Strength: Ultimate (UTS), MPa		470

Thermal Properties

Latent Heat of Fusion, J/g		77
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		1030
Melting Completion (Liquidus), °C		1360

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1310

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

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		11
Electrical Conductivity: Equal Volume, % IACS		19

Electrical Conductivity: Equal Weight (Specific), % IACS		5.8
Electrical Conductivity: Equal Weight (Specific), % IACS		19

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		12

Stiffness to Weight: Bending, points		8.9
Stiffness to Weight: Bending, points		22

Strength to Weight: Axial, points		4.4 to 7.8
Strength to Weight: Axial, points		15

Strength to Weight: Bending, points		5.5 to 8.0
Strength to Weight: Bending, points		15

Thermal Shock Resistance, points		13 to 24
Thermal Shock Resistance, points		17

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		0 to 1.0

Carbon (C), %		0
Carbon (C), %		0 to 0.1

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Gold (Au), %		68 to 70
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		0 to 0.75

Manganese (Mn), %		0
Manganese (Mn), %		0 to 0.75

Nickel (Ni), %		0
Nickel (Ni), %		92 to 99

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

Platinum (Pt), %		5.0 to 7.0
Platinum (Pt), %		0

Silicon (Si), %		0
Silicon (Si), %		0 to 1.3

Silver (Ag), %		23.5 to 26.5
Silver (Ag), %		0

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

Titanium (Ti), %		0
Titanium (Ti), %		1.0 to 4.0

Residuals, %		0
Residuals, %		0 to 0.5