ASTM B522 Class II vs. AWS ERNiCrMo-4

ASTM B522 class II belongs to the otherwise unclassified metals classification, while AWS ERNiCrMo-4 belongs to the nickel alloys. There are 16 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 II and the bottom bar is AWS ERNiCrMo-4.

ASTM B522 Class II Gold-Silver-Platinum Electrical Contact Alloy AWS ERNiCrMo-4 Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		96
Elastic (Young's, Tensile) Modulus, GPa		220

Elongation at Break, %		1.1 to 28
Elongation at Break, %		28

Poisson's Ratio		0.41
Poisson's Ratio		0.29

Shear Modulus, GPa		34
Shear Modulus, GPa		84

Tensile Strength: Ultimate (UTS), MPa		280 to 490
Tensile Strength: Ultimate (UTS), MPa		790

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		1590

Melting Onset (Solidus), °C		1030
Melting Onset (Solidus), °C		1530

Specific Heat Capacity, J/kg-K		160
Specific Heat Capacity, J/kg-K		410

Thermal Expansion, µm/m-K		15
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		17
Density, g/cm³		9.0

Common Calculations

Stiffness to Weight: Axial, points		3.1
Stiffness to Weight: Axial, points		13

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		24

Strength to Weight: Bending, points		5.5 to 8.0
Strength to Weight: Bending, points		21

Thermal Shock Resistance, points		13 to 24
Thermal Shock Resistance, points		22

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.020

Chromium (Cr), %		0
Chromium (Cr), %		14.5 to 16.5

Cobalt (Co), %		0
Cobalt (Co), %		0 to 2.5

Copper (Cu), %		0
Copper (Cu), %		0 to 0.5

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

Iron (Fe), %		0
Iron (Fe), %		4.0 to 7.0

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		15 to 17

Nickel (Ni), %		0
Nickel (Ni), %		50 to 63.5

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.040

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

Silicon (Si), %		0
Silicon (Si), %		0 to 0.080

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

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0 to 0.030

Tungsten (W), %		0
Tungsten (W), %		3.0 to 4.5

Vanadium (V), %		0
Vanadium (V), %		0 to 0.35

Residuals, %		0
Residuals, %		0 to 0.5