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Titanium 6-5-0.5 vs. AISI 444 Stainless Steel

Titanium 6-5-0.5 belongs to the titanium alloys classification, while AISI 444 stainless steel belongs to the iron alloys. There are 30 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 titanium 6-5-0.5 and the bottom bar is AISI 444 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 6.7
23
Fatigue Strength, MPa 530
210
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Shear Strength, MPa 630
300
Tensile Strength: Ultimate (UTS), MPa 1080
470
Tensile Strength: Yield (Proof), MPa 990
310

Thermal Properties

Latent Heat of Fusion, J/g 410
290
Maximum Temperature: Mechanical, °C 300
930
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 550
480
Thermal Conductivity, W/m-K 4.2
23
Thermal Expansion, µm/m-K 9.4
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 41
15
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 33
3.4
Embodied Energy, MJ/kg 540
47
Embodied Water, L/kg 180
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
95
Resilience: Unit (Modulus of Resilience), kJ/m3 4630
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 67
17
Strength to Weight: Bending, points 52
17
Thermal Diffusivity, mm2/s 1.7
6.2
Thermal Shock Resistance, points 79
16

Alloy Composition


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Aluminum (Al), % 5.7 to 6.3
0
Carbon (C), % 0 to 0.080
0 to 0.025
Chromium (Cr), % 0
17.5 to 19.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
73.3 to 80.8
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0.25 to 0.75
1.8 to 2.5
Nickel (Ni), % 0
0 to 1.0
Niobium (Nb), % 0
0.2 to 0.8
Nitrogen (N), % 0 to 0.050
0 to 0.035
Oxygen (O), % 0 to 0.19
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 85.6 to 90.1
0.2 to 0.8
Zirconium (Zr), % 4.0 to 6.0
0
Residuals, % 0 to 0.4
0