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Grade C-5 Titanium vs. SAE-AISI 1044 Steel

Grade C-5 titanium belongs to the titanium alloys classification, while SAE-AISI 1044 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is grade C-5 titanium and the bottom bar is SAE-AISI 1044 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
180
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 6.7
18
Fatigue Strength, MPa 510
230
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 40
72
Tensile Strength: Ultimate (UTS), MPa 1000
620
Tensile Strength: Yield (Proof), MPa 940
340

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 340
400
Melting Completion (Liquidus), °C 1610
1460
Melting Onset (Solidus), °C 1560
1420
Specific Heat Capacity, J/kg-K 560
470
Thermal Conductivity, W/m-K 7.1
51
Thermal Expansion, µm/m-K 9.6
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 36
1.8
Density, g/cm3 4.4
7.8
Embodied Carbon, kg CO2/kg material 38
1.4
Embodied Energy, MJ/kg 610
18
Embodied Water, L/kg 200
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 66
94
Resilience: Unit (Modulus of Resilience), kJ/m3 4200
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 63
22
Strength to Weight: Bending, points 50
21
Thermal Diffusivity, mm2/s 2.9
14
Thermal Shock Resistance, points 71
20

Alloy Composition

Aluminum (Al), % 5.5 to 6.8
0
Carbon (C), % 0 to 0.1
0.43 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.4
98.8 to 99.27
Manganese (Mn), % 0
0.3 to 0.6
Nickel (Ni), % 0 to 0.050
0
Oxygen (O), % 0 to 0.25
0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 87.5 to 91
0
Vanadium (V), % 3.5 to 4.5
0
Residuals, % 0 to 0.4
0