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Grade 1 Titanium vs. EN 1.7729 Steel

Grade 1 titanium belongs to the titanium alloys classification, while EN 1.7729 steel belongs to the iron alloys. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is grade 1 titanium and the bottom bar is EN 1.7729 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120
270
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 28
17
Fatigue Strength, MPa 170
500
Poisson's Ratio 0.32
0.29
Reduction in Area, % 36
56
Shear Modulus, GPa 39
73
Shear Strength, MPa 200
560
Tensile Strength: Ultimate (UTS), MPa 310
910
Tensile Strength: Yield (Proof), MPa 220
750

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 320
430
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 20
40
Thermal Expansion, µm/m-K 8.8
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.7
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 7.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 37
3.8
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 31
3.3
Embodied Energy, MJ/kg 510
49
Embodied Water, L/kg 110
59

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79
150
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1500
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 19
32
Strength to Weight: Bending, points 23
27
Thermal Diffusivity, mm2/s 8.2
11
Thermal Shock Resistance, points 24
27

Alloy Composition

Aluminum (Al), % 0
0.015 to 0.080
Arsenic (As), % 0
0 to 0.020
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.080
0.17 to 0.23
Chromium (Cr), % 0
0.9 to 1.2
Copper (Cu), % 0
0 to 0.2
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
94.8 to 97
Manganese (Mn), % 0
0.35 to 0.75
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0 to 0.2
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0
0 to 0.020
Titanium (Ti), % 99.095 to 100
0.070 to 0.15
Vanadium (V), % 0
0.6 to 0.8
Residuals, % 0 to 0.4
0