TA1 is commercially pure titanium, equivalent to Grade 1. It represents the highest purity among industrially pure titanium grades (TA1–TA4), offering excellent ductility, toughness, and corrosion resistance

Chemical Composition & Standards

Typical composition standards for TA1 include:

• Ti ≥ 99.5%
• Low levels of interstitials: O, N, C, Fe
• Specific limits (by weight): C ≤ 0.08%, H ≤ 0.015%, Fe ≤ 0.20%, O ≤ 0.18%

It corresponds to:

• ASTM Grade 1
• Chinese standard TA1
• UNS designation R50250 (Commercially pure titanium grade)

Mechanical Properties

• Tensile Strength: ~240 MPa
• Yield Strength: ~170 MPa
• Elongation: ~24% or higher
• Density: ≈ 4.51 g/cm³

More comprehensive figures from Alloy Huaxiao include:

• Tensile ≥ 350 MPa
• Yield ≥ 275 MPa
• Elongation ≥ 20%
• Hardness 160–200 HV

Key Characteristics

• Softest and most formable among pure titanium grades
• Exceptional corrosion resistance, especially in seawater and chemical environments
• Outstanding impact toughness and weldability
• Excellent for forming: forging, rolling, drawing, stamping

Typical Applications

• Chemical processing: heat exchangers, anodes, reactors
• Marine environments: desalination systems, seawater-exposed components
• Medical field: implants due to biocompatibility
• Aerospace: lightweight structural parts
• Construction & automotive: where formability and corrosion resistance are priorities

In summary:
TA1 is the purest, most formable grade of commercially pure titanium, prized for its corrosion resistance, ductility, and suitability for demanding environments like marine, chemical, medical, and aerospace sectors.