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Grade C-2 Titanium vs. Nickel 685

Grade C-2 titanium belongs to the titanium alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 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 C-2 titanium and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
350
Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 17
17
Fatigue Strength, MPa 200
470
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
77
Tensile Strength: Ultimate (UTS), MPa 390
1250
Tensile Strength: Yield (Proof), MPa 310
850

Thermal Properties

Latent Heat of Fusion, J/g 420
320
Maximum Temperature: Mechanical, °C 320
1000
Melting Completion (Liquidus), °C 1660
1380
Melting Onset (Solidus), °C 1610
1330
Specific Heat Capacity, J/kg-K 540
460
Thermal Conductivity, W/m-K 21
13
Thermal Expansion, µm/m-K 8.7
12

Otherwise Unclassified Properties

Base Metal Price, % relative 37
75
Density, g/cm3 4.5
8.4
Embodied Carbon, kg CO2/kg material 31
10
Embodied Energy, MJ/kg 510
140
Embodied Water, L/kg 110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61
190
Resilience: Unit (Modulus of Resilience), kJ/m3 460
1820
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 24
42
Strength to Weight: Bending, points 26
31
Thermal Diffusivity, mm2/s 8.8
3.3
Thermal Shock Resistance, points 30
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.1
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
0 to 2.0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0 to 0.050
49.6 to 62.5
Oxygen (O), % 0 to 0.4
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 98.8 to 100
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12
Residuals, % 0 to 0.4
0