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Grade 6 Titanium vs. SAE-AISI 1144 Steel

Grade 6 titanium belongs to the titanium alloys classification, while SAE-AISI 1144 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is grade 6 titanium and the bottom bar is SAE-AISI 1144 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 11
11 to 17
Fatigue Strength, MPa 290
280 to 430
Poisson's Ratio 0.32
0.29
Reduction in Area, % 27
34 to 40
Shear Modulus, GPa 39
72
Shear Strength, MPa 530
460 to 510
Tensile Strength: Ultimate (UTS), MPa 890
750 to 840
Tensile Strength: Yield (Proof), MPa 840
420 to 690

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 310
400
Melting Completion (Liquidus), °C 1580
1450
Melting Onset (Solidus), °C 1530
1410
Specific Heat Capacity, J/kg-K 550
470
Thermal Conductivity, W/m-K 7.8
51
Thermal Expansion, µm/m-K 9.4
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.9
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 30
1.4
Embodied Energy, MJ/kg 480
19
Embodied Water, L/kg 190
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
91 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 3390
480 to 1290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 55
27 to 30
Strength to Weight: Bending, points 46
23 to 25
Thermal Diffusivity, mm2/s 3.2
14
Thermal Shock Resistance, points 65
22 to 24

Alloy Composition

Aluminum (Al), % 4.0 to 6.0
0
Carbon (C), % 0 to 0.080
0.4 to 0.48
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.5
97.5 to 98
Manganese (Mn), % 0
1.4 to 1.7
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0.24 to 0.33
Tin (Sn), % 2.0 to 3.0
0
Titanium (Ti), % 89.8 to 94
0
Residuals, % 0 to 0.4
0