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Titanium. ME 372 Design File Presentation December 12, 2001. Doug Espenschied Abe Sego. Titanium. Material Properties Production Applications Sources. Pure Titanium S ut = 270-750 MPa S y = 165-485 MPa Se ¢ = 0.5 S ut E » 110 GPa G » 45 GPa
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Titanium ME 372 Design File Presentation December 12, 2001 Doug Espenschied Abe Sego
Titanium • Material Properties • Production • Applications • Sources
Pure Titanium Sut = 270-750 MPa Sy = 165-485 MPa Se¢ = 0.5 Sut E»110 GPa G»45 GPa Density: 4500 kg/m3Melting Point: 1668 °C Titanium Alloys Sut = 350-1200 MPa Sy = 200-1170 Mpa Se¢ = 0.4-0.65 Sut Common Alloy Elements Aluminum Copper Manganese Molybdenum Tin Vanadium Zirconium Material Properties
Production Rutile Ore Sponge Ingot
Machineabilty Can be done economically Bad stories from aircraft alloys (350+ BHN) Must consider physical properties Comparable to 316 stainless steel Beware of surface finish for fatigue life Formability Hot vs. Cold Forming Similar to stainless steel Production Weldability • Similar to nickel alloys and stainless steels • GTAW, GMAW, electron beam, laser, and friction welding
Advantages Strength to weight ratio Low density Exceptional corrosion resistance Excellent elevated temperature properties Low thermal expansion coefficient High melting point Shock/ballistic resistance Nontoxic, hypo allergenic Disadvantages Material Cost Production Cost Production complexity Application
WWW Commercial Sites • http://www.titanium.com • http://www.rti-intl.com • http://www.fusheng.com • http://www.supraalloys.com • http://www.toho-titanium.co.jp Academic Sites • http://www.tech.plymouth.ac.uk/sme/desnotes/titanium.htm • http://www.ulib.org/webRoot/Books/National_Academy_Press_Books/titanium/titan001.htm