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Grade 38 Titanium vs. Nickel 625

Grade 38 titanium belongs to the titanium alloys classification, while nickel 625 belongs to the nickel alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 38 titanium and the bottom bar is nickel 625.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 11
33 to 34
Fatigue Strength, MPa 530
240 to 320
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
79
Shear Strength, MPa 600
530 to 600
Tensile Strength: Ultimate (UTS), MPa 1000
790 to 910
Tensile Strength: Yield (Proof), MPa 910
320 to 450

Thermal Properties

Latent Heat of Fusion, J/g 410
330
Maximum Temperature: Mechanical, °C 330
980
Melting Completion (Liquidus), °C 1620
1350
Melting Onset (Solidus), °C 1570
1290
Specific Heat Capacity, J/kg-K 550
440
Thermal Conductivity, W/m-K 8.0
11
Thermal Expansion, µm/m-K 9.3
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 36
80
Density, g/cm3 4.5
8.6
Embodied Carbon, kg CO2/kg material 35
14
Embodied Energy, MJ/kg 560
190
Embodied Water, L/kg 160
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 3840
260 to 490
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
23
Strength to Weight: Axial, points 62
26 to 29
Strength to Weight: Bending, points 49
22 to 24
Thermal Diffusivity, mm2/s 3.2
2.9
Thermal Shock Resistance, points 72
22 to 25

Alloy Composition

Aluminum (Al), % 3.5 to 4.5
0 to 0.4
Carbon (C), % 0 to 0.080
0 to 0.1
Chromium (Cr), % 0
20 to 23
Cobalt (Co), % 0
0 to 1.0
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 1.2 to 1.8
0 to 5.0
Manganese (Mn), % 0
0 to 0.5
Molybdenum (Mo), % 0
8.0 to 10
Nickel (Ni), % 0
58 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0.2 to 0.3
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 89.9 to 93.1
0 to 0.4
Vanadium (V), % 2.0 to 3.0
0
Residuals, % 0 to 0.4
0