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Grade 27 Titanium vs. EN 1.7767 Steel

Grade 27 titanium belongs to the titanium alloys classification, while EN 1.7767 steel belongs to the iron alloys. There are 30 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 EN 1.7767 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
20
Fatigue Strength, MPa 170
320 to 340
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
74
Shear Strength, MPa 180
420 to 430
Tensile Strength: Ultimate (UTS), MPa 270
670 to 690
Tensile Strength: Yield (Proof), MPa 230
460 to 500

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
480
Melting Completion (Liquidus), °C 1660
1470
Melting Onset (Solidus), °C 1610
1430
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
40
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 37
4.5
Density, g/cm3 4.5
7.9
Embodied Carbon, kg CO2/kg material 33
2.4
Embodied Energy, MJ/kg 530
33
Embodied Water, L/kg 320
64

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 240
570 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 21
22
Thermal Diffusivity, mm2/s 8.8
11
Thermal Shock Resistance, points 21
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.080
0.1 to 0.15
Chromium (Cr), % 0
2.8 to 3.3
Copper (Cu), % 0
0 to 0.25
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
93.8 to 95.8
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.25
Niobium (Nb), % 0
0 to 0.070
Nitrogen (N), % 0 to 0.030
0 to 0.012
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.015
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0 to 0.15
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 99 to 99.92
0 to 0.030
Vanadium (V), % 0
0.2 to 0.3
Residuals, % 0 to 0.4
0