ASTM B780 Alloy vs. Nickel 685

ASTM B780 alloy belongs to the otherwise unclassified metals classification, while nickel 685 belongs to the nickel alloys. There are 15 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is nickel 685.

ASTM B780 Silver-Copper-Nickel Electrical Contact Alloy Nickel Alloy 685 (N07001)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		83
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		1.1 to 9.1
Elongation at Break, %		17

Poisson's Ratio		0.36
Poisson's Ratio		0.29

Shear Modulus, GPa		30
Shear Modulus, GPa		77

Shear Strength, MPa		200 to 340
Shear Strength, MPa		770

Tensile Strength: Ultimate (UTS), MPa		330 to 590
Tensile Strength: Ultimate (UTS), MPa		1250

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		320

Specific Heat Capacity, J/kg-K		270
Specific Heat Capacity, J/kg-K		460

Thermal Expansion, µm/m-K		18
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		10
Density, g/cm³		8.4

Common Calculations

Stiffness to Weight: Axial, points		4.5
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		14
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		9.1 to 16
Strength to Weight: Axial, points		42

Strength to Weight: Bending, points		11 to 15
Strength to Weight: Bending, points		31

Thermal Shock Resistance, points		16 to 29
Thermal Shock Resistance, points		37

Alloy Composition

Aluminum (Al), %		0
Aluminum (Al), %		1.2 to 1.6

Boron (B), %		0
Boron (B), %		0.0030 to 0.010

Cadmium (Cd), %		0 to 0.050
Cadmium (Cd), %		0

Carbon (C), %		0
Carbon (C), %		0.030 to 0.1

Chromium (Cr), %		0
Chromium (Cr), %		18 to 21

Cobalt (Co), %		0
Cobalt (Co), %		12 to 15

Copper (Cu), %		23.5 to 25.7
Copper (Cu), %		0 to 0.5

Iron (Fe), %		0 to 0.050
Iron (Fe), %		0 to 2.0

Lead (Pb), %		0 to 0.030
Lead (Pb), %		0

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

Molybdenum (Mo), %		0
Molybdenum (Mo), %		3.5 to 5.0

Nickel (Ni), %		0.35 to 0.65
Nickel (Ni), %		49.6 to 62.5

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

Silicon (Si), %		0
Silicon (Si), %		0 to 0.75

Silver (Ag), %		74 to 76
Silver (Ag), %		0

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

Titanium (Ti), %		0
Titanium (Ti), %		2.8 to 3.3

Zinc (Zn), %		0 to 0.060
Zinc (Zn), %		0.020 to 0.12