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Grade 19 Titanium vs. SAE-AISI 5135 Steel

Grade 19 titanium belongs to the titanium alloys classification, while SAE-AISI 5135 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is grade 19 titanium and the bottom bar is SAE-AISI 5135 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 5.6 to 17
22
Fatigue Strength, MPa 550 to 620
240
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 47
73
Shear Strength, MPa 550 to 750
320
Tensile Strength: Ultimate (UTS), MPa 890 to 1300
510
Tensile Strength: Yield (Proof), MPa 870 to 1170
340

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 370
420
Melting Completion (Liquidus), °C 1660
1460
Melting Onset (Solidus), °C 1600
1420
Specific Heat Capacity, J/kg-K 520
470
Thermal Conductivity, W/m-K 6.2
45
Thermal Expansion, µm/m-K 9.1
12

Otherwise Unclassified Properties

Base Metal Price, % relative 45
2.2
Density, g/cm3 5.0
7.8
Embodied Carbon, kg CO2/kg material 47
1.4
Embodied Energy, MJ/kg 760
19
Embodied Water, L/kg 230
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70 to 150
100
Resilience: Unit (Modulus of Resilience), kJ/m3 3040 to 5530
300
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 33
24
Strength to Weight: Axial, points 49 to 72
18
Strength to Weight: Bending, points 41 to 53
18
Thermal Diffusivity, mm2/s 2.4
12
Thermal Shock Resistance, points 57 to 83
16

Alloy Composition

Aluminum (Al), % 3.0 to 4.0
0
Carbon (C), % 0 to 0.050
0.33 to 0.38
Chromium (Cr), % 5.5 to 6.5
0.8 to 1.1
Hydrogen (H), % 0 to 0.020
0
Iron (Fe), % 0 to 0.3
97.3 to 98.1
Manganese (Mn), % 0
0.6 to 0.8
Molybdenum (Mo), % 3.5 to 4.5
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.12
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 71.1 to 77
0
Vanadium (V), % 7.5 to 8.5
0
Zirconium (Zr), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0