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» Titanium Grade 4

Unalloyed titanium offering reasonably high strength with good weldability. Good corrosion resistance in neutral to oxidizing environments, including chlorides.

Composition Physical Data Mechanical Data Fabrication Information

» Composition

C < 0.1 %
Fe < 0.5 %
N2 < 0.05 %
O2 < 0.4 %
H2 (sheet) < 0.015 %
H2 (bar) < 0.0125 %
H2 (billet) < 0.0100 %
Ti = Rem

» Physical Data

  Minimum Typical
Density g/cm3 (lb/cu.in)   4.51(0.162)
Melting Range °C+/-15°C (°F)   1660(3020)
Specific Heat J/g/°C   0.54
Volume Electrical Resistivity µohm.cm (µohm.in)   61(24)
Thermal Conductivity W/mK(Btu/ft h°F) 22(153)  
*Mean Thermal Exp. Coeff. 0-100°C/°C   8.6 x 10 -6
*Mean Thermal Exp. Coeff. 0-300°C/°C   9.2 x 10 -6
Beta Transus °C+/-15°C(°F)   949 (1740)

» Mechanical Data

  Minimum Typical
Tensile Strength MPa(ksi) 552 (80) 683 (99)
0.2% Proof Stress MPa(ksi) 483 (70) 559 (81)
Elongation over 2 Inches % 15 23
Reduction in Area % 30  
Elastic Modulus GPa(Msi)   104 (15)
Hardness Bhn   250
Specified Bend Radius <0.070" x Thickness   2.5
Specified Bend Radius >0.070In x Thickness   3
Welded Bend Radius x Thickness 3  
Charpy, V-Notch Impact J(ft Ibf) 14 (10)  
Direct Stress Fatigue Limit (Notch factor Kt1) MPa(ksi)   376 (55)

» Fabrication Information

Weldability Good
Forging Rough 935°C (1715°F), finish 843°C (1550°F)
Annealing 704°C (1300°F), 2 hr, AC
Stress Relief Annealing 482-538°C (900-1000°F), 45 min.