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Grade 27 Titanium vs. SAE-AISI D3 Steel

Grade 27 titanium belongs to the titanium alloys classification, while SAE-AISI D3 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 27 titanium and the bottom bar is SAE-AISI D3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
9.8 to 15
Fatigue Strength, MPa 170
310 to 940
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 41
74
Shear Strength, MPa 180
470 to 1220
Tensile Strength: Ultimate (UTS), MPa 270
770 to 2050
Tensile Strength: Yield (Proof), MPa 230
480 to 1550

Thermal Properties

Latent Heat of Fusion, J/g 420
270
Melting Completion (Liquidus), °C 1660
1430
Melting Onset (Solidus), °C 1610
1390
Specific Heat Capacity, J/kg-K 540
480
Thermal Conductivity, W/m-K 21
31
Thermal Expansion, µm/m-K 8.7
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
8.0
Density, g/cm3 4.5
7.7
Embodied Carbon, kg CO2/kg material 33
3.2
Embodied Energy, MJ/kg 530
48
Embodied Water, L/kg 320
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
97 to 180
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 35
25
Strength to Weight: Axial, points 17
28 to 74
Strength to Weight: Bending, points 21
24 to 47
Thermal Diffusivity, mm2/s 8.8
8.3
Thermal Shock Resistance, points 21
23 to 63

Alloy Composition

Carbon (C), % 0 to 0.080
2.0 to 2.4
Chromium (Cr), % 0
11 to 13.5
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
80.3 to 87
Manganese (Mn), % 0
0 to 0.6
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.030
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 99 to 99.92
0
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0
0 to 1.0
Residuals, % 0 to 0.4
0