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Grade 27 Titanium vs. AWS ER90S-D2

Grade 27 titanium belongs to the titanium alloys classification, while AWS ER90S-D2 belongs to the iron alloys. There are 27 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 AWS ER90S-D2.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 27
19
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Tensile Strength: Ultimate (UTS), MPa 270
710
Tensile Strength: Yield (Proof), MPa 230
600

Thermal Properties

Latent Heat of Fusion, J/g 420
260
Melting Completion (Liquidus), °C 1660
1450
Melting Onset (Solidus), °C 1610
1410
Specific Heat Capacity, J/kg-K 540
470
Thermal Conductivity, W/m-K 21
47
Thermal Expansion, µm/m-K 8.7
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.6
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 37
2.6
Density, g/cm3 4.5
7.8
Embodied Carbon, kg CO2/kg material 33
1.6
Embodied Energy, MJ/kg 530
21
Embodied Water, L/kg 320
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 70
130
Resilience: Unit (Modulus of Resilience), kJ/m3 240
980
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 35
24
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 21
23
Thermal Diffusivity, mm2/s 8.8
13
Thermal Shock Resistance, points 21
21

Alloy Composition

Carbon (C), % 0 to 0.080
0.070 to 0.12
Copper (Cu), % 0
0 to 0.5
Hydrogen (H), % 0 to 0.015
0
Iron (Fe), % 0 to 0.2
95.2 to 97.4
Manganese (Mn), % 0
1.6 to 2.1
Molybdenum (Mo), % 0
0.4 to 0.6
Nickel (Ni), % 0
0 to 0.15
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0 to 0.18
0
Phosphorus (P), % 0
0 to 0.025
Ruthenium (Ru), % 0.080 to 0.14
0
Silicon (Si), % 0
0.5 to 0.8
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 99 to 99.92
0
Residuals, % 0
0 to 0.5