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Titanium 6-7 vs. EN 1.7706 Steel

Titanium 6-7 belongs to the titanium alloys classification, while EN 1.7706 steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is titanium 6-7 and the bottom bar is EN 1.7706 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Elongation at Break, % 11
17
Fatigue Strength, MPa 530
330
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 45
73
Tensile Strength: Ultimate (UTS), MPa 1020
690
Tensile Strength: Yield (Proof), MPa 900
500

Thermal Properties

Latent Heat of Fusion, J/g 410
260
Maximum Temperature: Mechanical, °C 300
440
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
3.7
Density, g/cm3 5.1
7.9
Embodied Carbon, kg CO2/kg material 34
2.3
Embodied Energy, MJ/kg 540
32
Embodied Water, L/kg 190
57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
110
Resilience: Unit (Modulus of Resilience), kJ/m3 3460
670
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 32
24
Strength to Weight: Axial, points 56
24
Strength to Weight: Bending, points 44
22
Thermal Shock Resistance, points 66
20

Alloy Composition

Aluminum (Al), % 5.5 to 6.5
0
Carbon (C), % 0 to 0.080
0.15 to 0.2
Chromium (Cr), % 0
1.2 to 1.5
Copper (Cu), % 0
0 to 0.3
Hydrogen (H), % 0 to 0.0090
0
Iron (Fe), % 0 to 0.25
94.7 to 97.1
Manganese (Mn), % 0
0.5 to 0.9
Molybdenum (Mo), % 6.5 to 7.5
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.4
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 0.020
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.015
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 84.9 to 88
0
Vanadium (V), % 0
0.2 to 0.3