TA19

Brief

Ta19 Composition and Alloy Type

• Nominal Composition: Ti-6Al-2Sn-4Zr-2Mo
• Alloy Type: Near-alpha titanium alloy
• Stabilizing Elements:
  • Alpha Stabilizers: Aluminum (Al)
  • Neutral Elements: Tin (Sn), Zirconium (Zr)
  • Isomorphous Beta Stabilizer: Molybdenum (Mo)
  • Eutectoid Beta Stabilizer: Silicon (И)

Elemental Benefits

• Molybdenum (Mo): Enhances room and high-temperature tensile strength and stability
• Aluminum (Al), Tin (Sn), Zirconium (Zr): Combined effect maintains prolonged high-temperature strength and creep resistance
• Silicon (И): Causes precipitation of silicide phase, improving high-temperature creep strength

Performance Characteristics

• High-Temperature Strength: Retains significant strength up to 540°C, superior to TA11 alloy
• Specific Strength: Better than TA14 alloy
• Creep Performance: Comparable to TA14, better than TA11 alloy
• Processing and Welding: Good machinability and weldability

Приложения

• Аэрокосмическая промышленность: Manufacturing of compressor casings in aircraft engines and airplane skins
• Maximum Long-Term Operating Temperature: 500°C

Semi-Finished Products

• Тарелки, стержни, forgings, rings, and castings

Material Grades

• TA19, ZTC6
• Equivalent Grades: Ti-6Al-2Sn-4Zr-2Mo (USA)

Technical Standards

• XJ/BS 5128—1995: Ti-6242 titanium alloy bar technical agreement
• Q/16GJX0-274—1993: Technical conditions for Ti-6242 titanium alloy ring forgings for aero engines
• GJB 2896—1997: Specifications for titanium and titanium alloy investment castings
• AMS 4975G-1994: Solution-aged Ti-6Al-2Sn-4Zr-2Mo-0.08Si titanium alloy bars, провода, and rings