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Grade 26 Titanium vs. SAE-AISI 4626 Steel

Grade 26 titanium belongs to the titanium alloys classification, while SAE-AISI 4626 steel belongs to the iron 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 26 titanium and the bottom bar is SAE-AISI 4626 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 23
25
Fatigue Strength, MPa 250
240
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 250
320
Tensile Strength: Ultimate (UTS), MPa 390
500
Tensile Strength: Yield (Proof), MPa 350
330

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
400
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1610
1420
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
44
Thermal Expansion, µm/m-K 9.2
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.4
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.5
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.5
Embodied Energy, MJ/kg 530
20
Embodied Water, L/kg 320
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 85
110
Resilience: Unit (Modulus of Resilience), kJ/m3 580
290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 26
18
Thermal Diffusivity, mm2/s 8.6
12
Thermal Shock Resistance, points 28
15

Alloy Composition

Carbon (C), % 0 to 0.080
0.24 to 0.29
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.3
97.4 to 98.3
Manganese (Mn), % 0
0.45 to 0.65
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.7 to 1.0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.035
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 98.8 to 99.92
0
Residuals, % 0 to 0.4
0