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Titanium 6-7 vs. EN 1.7715 Steel

Titanium 6-7 belongs to the titanium alloys classification, while EN 1.7715 steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is EN 1.7715 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
21
Fatigue Strength, MPa 530
240
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 45
73
Shear Strength, MPa 610
340
Tensile Strength: Ultimate (UTS), MPa 1020
540
Tensile Strength: Yield (Proof), MPa 900
340

Thermal Properties

Latent Heat of Fusion, J/g 410
250
Maximum Temperature: Mechanical, °C 300
420
Melting Completion (Liquidus), °C 1700
1470
Melting Onset (Solidus), °C 1650
1430
Specific Heat Capacity, J/kg-K 520
470
Thermal Expansion, µm/m-K 9.3
13

Otherwise Unclassified Properties

Base Metal Price, % relative 75
2.9
Density, g/cm3 5.1
7.9
Embodied Carbon, kg CO2/kg material 34
2.2
Embodied Energy, MJ/kg 540
30
Embodied Water, L/kg 190
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
99
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 56
19
Strength to Weight: Bending, points 44
19
Thermal Shock Resistance, points 66
16

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0 to 0.040
Carbon (C), % 0 to 0.080
0.1 to 0.15
Chromium (Cr), % 0
0.3 to 0.6
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
96.5 to 98.3
Manganese (Mn), % 0
0.4 to 0.7
Molybdenum (Mo), % 6.5 to 7.5
0.5 to 0.7
Nickel (Ni), % 0
0 to 0.3
Niobium (Nb), % 6.5 to 7.5
0
Nitrogen (N), % 0 to 0.050
0
Oxygen (O), % 0 to 0.2
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0
Vanadium (V), % 0
0.22 to 0.28