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Grade CY40 Nickel vs. Nickel 685

Both grade CY40 nickel and nickel 685 are nickel alloys. They have 74% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is grade CY40 nickel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 34
17
Fatigue Strength, MPa 160
470
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 540
1250
Tensile Strength: Yield (Proof), MPa 220
850

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Maximum Temperature: Mechanical, °C 960
1000
Melting Completion (Liquidus), °C 1350
1380
Melting Onset (Solidus), °C 1300
1330
Specific Heat Capacity, J/kg-K 470
460
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 55
75
Density, g/cm3 8.4
8.4
Embodied Carbon, kg CO2/kg material 9.1
10
Embodied Energy, MJ/kg 130
140
Embodied Water, L/kg 260
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
190
Resilience: Unit (Modulus of Resilience), kJ/m3 130
1820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 18
42
Strength to Weight: Bending, points 18
31
Thermal Diffusivity, mm2/s 3.7
3.3
Thermal Shock Resistance, points 16
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.4
0.030 to 0.1
Chromium (Cr), % 14 to 17
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0 to 11
0 to 2.0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 67 to 86
49.6 to 62.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 3.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12