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Nickel 617 vs. Nickel 684

Both nickel 617 and nickel 684 are nickel alloys. They have a moderately high 91% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is nickel 617 and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 40
11
Fatigue Strength, MPa 220
390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 80
76
Shear Strength, MPa 510
710
Tensile Strength: Ultimate (UTS), MPa 740
1190
Tensile Strength: Yield (Proof), MPa 280
800

Thermal Properties

Latent Heat of Fusion, J/g 330
320
Maximum Temperature: Mechanical, °C 1010
1000
Melting Completion (Liquidus), °C 1380
1370
Melting Onset (Solidus), °C 1330
1320
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 75
75
Density, g/cm3 8.5
8.3
Embodied Carbon, kg CO2/kg material 10
10
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 350
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
120
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 24
40
Strength to Weight: Bending, points 21
30
Thermal Shock Resistance, points 21
34

Alloy Composition

Aluminum (Al), % 0.8 to 1.5
2.5 to 3.3
Boron (B), % 0 to 0.0060
0.0030 to 0.010
Carbon (C), % 0.050 to 0.15
0 to 0.15
Chromium (Cr), % 20 to 24
15 to 20
Cobalt (Co), % 10 to 15
13 to 20
Copper (Cu), % 0 to 0.5
0 to 0.15
Iron (Fe), % 0 to 3.0
0 to 4.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 8.0 to 10
3.0 to 5.0
Nickel (Ni), % 44.5 to 62
42.7 to 64
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3