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Nickel 684 vs. R56401 Titanium

Nickel 684 belongs to the nickel alloys classification, while R56401 titanium belongs to the titanium alloys. 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 nickel 684 and the bottom bar is R56401 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 11
9.1
Fatigue Strength, MPa 390
480
Poisson's Ratio 0.29
0.32
Reduction in Area, % 17
17
Shear Modulus, GPa 76
40
Shear Strength, MPa 710
560
Tensile Strength: Ultimate (UTS), MPa 1190
940
Tensile Strength: Yield (Proof), MPa 800
850

Thermal Properties

Latent Heat of Fusion, J/g 320
410
Maximum Temperature: Mechanical, °C 1000
340
Melting Completion (Liquidus), °C 1370
1610
Melting Onset (Solidus), °C 1320
1560
Specific Heat Capacity, J/kg-K 470
560
Thermal Expansion, µm/m-K 13
9.6

Otherwise Unclassified Properties

Base Metal Price, % relative 75
36
Density, g/cm3 8.3
4.5
Embodied Carbon, kg CO2/kg material 10
38
Embodied Energy, MJ/kg 140
610
Embodied Water, L/kg 360
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
83
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
3440
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
35
Strength to Weight: Axial, points 40
59
Strength to Weight: Bending, points 30
48
Thermal Shock Resistance, points 34
67

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
5.5 to 6.5
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 15 to 20
0
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Hydrogen (H), % 0
0 to 0.012
Iron (Fe), % 0 to 4.0
0 to 0.25
Manganese (Mn), % 0 to 0.75
0
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
0
Nitrogen (N), % 0
0 to 0.050
Oxygen (O), % 0
0 to 0.13
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 2.5 to 3.3
88.5 to 91
Vanadium (V), % 0
3.5 to 4.5