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Nickel 686 vs. Nickel 30

Both nickel 686 and nickel 30 are nickel alloys. Both are furnished in the annealed condition. They have 73% of their average alloy composition in common.

For each property being compared, the top bar is nickel 686 and the bottom bar is nickel 30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
210
Elongation at Break, % 51
34
Fatigue Strength, MPa 410
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 77
82
Shear Strength, MPa 560
440
Tensile Strength: Ultimate (UTS), MPa 780
660
Tensile Strength: Yield (Proof), MPa 350
270

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 980
1020
Melting Completion (Liquidus), °C 1380
1480
Melting Onset (Solidus), °C 1340
1430
Specific Heat Capacity, J/kg-K 420
450
Thermal Conductivity, W/m-K 9.8
10
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.4
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 70
60
Density, g/cm3 9.0
8.5
Embodied Carbon, kg CO2/kg material 12
9.4
Embodied Energy, MJ/kg 170
130
Embodied Water, L/kg 300
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
180
Resilience: Unit (Modulus of Resilience), kJ/m3 280
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 2.6
2.7
Thermal Shock Resistance, points 21
18

Alloy Composition

Carbon (C), % 0 to 0.010
0 to 0.030
Chromium (Cr), % 19 to 23
28 to 31.5
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0
1.0 to 2.4
Iron (Fe), % 0 to 5.0
13 to 17
Manganese (Mn), % 0 to 0.75
0 to 0.030
Molybdenum (Mo), % 15 to 17
4.0 to 6.0
Nickel (Ni), % 49.5 to 63
30.2 to 52.2
Niobium (Nb), % 0
0.3 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.080
0 to 0.8
Sulfur (S), % 0 to 0.020
0 to 0.020
Titanium (Ti), % 0.020 to 0.25
0
Tungsten (W), % 3.0 to 4.4
1.5 to 4.0