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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.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
200
Elongation at Break, % 1.1 to 9.1
17
Poisson's Ratio 0.36
0.29
Shear Modulus, GPa 30
77
Shear Strength, MPa 200 to 340
770
Tensile Strength: Ultimate (UTS), MPa 330 to 590
1250

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Specific Heat Capacity, J/kg-K 270
460
Thermal Expansion, µm/m-K 18
12

Otherwise Unclassified Properties

Density, g/cm3 10
8.4

Common Calculations

Stiffness to Weight: Axial, points 4.5
13
Stiffness to Weight: Bending, points 14
23
Strength to Weight: Axial, points 9.1 to 16
42
Strength to Weight: Bending, points 11 to 15
31
Thermal Shock Resistance, points 16 to 29
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Cadmium (Cd), % 0 to 0.050
0
Carbon (C), % 0
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 23.5 to 25.7
0 to 0.5
Iron (Fe), % 0 to 0.050
0 to 2.0
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0.35 to 0.65
49.6 to 62.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.75
Silver (Ag), % 74 to 76
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0 to 0.060
0.020 to 0.12