Titanium

Titanium is a strong, lightweight, and corrosion-resistant metal that is widely used in a variety of industries, including aerospace, marine, medical, and chemical processing. Known for its exceptional strength-to-weight ratio and resistance to corrosion, even in extreme environments, titanium is highly valued in applications where strength and durability are critical. It is particularly resistant to saltwater, chlorine, and acids, making it ideal for use in marine environments and in the chemical processing industry.

Grade	Composition	Key Properties	Common Applications
Grade 1	Pure titanium (99.5%)	Excellent corrosion resistance, high ductility	Chemical processing, desalination, marine engineering
Grade 2	Pure titanium (99.2%)	Good strength, corrosion resistance, formability	Aerospace, automotive, medical devices, marine
Grade 3	Pure titanium (99.5%)	Higher strength than Grade 2, good corrosion resistance	Aerospace, pressure vessels, heat exchangers
Grade 4	Pure titanium (99.0%)	Highest strength of commercially pure grades	Aerospace, military, chemical processing
Grade 5	Ti-6Al-4V (90% Ti, 6% Al, 4% V)	Excellent strength, corrosion resistance, weldability	Aerospace, medical implants, automotive, structural parts
Grade 9	Ti-3Al-2.5V (90% Ti, 3% Al, 2.5% V)	Improved formability, moderate strength and corrosion resistance	Aerospace, sporting equipment, marine
Grade 23	Ti-6Al-4V ELI (Extra Low Interstitials)	High strength, biocompatible, for medical use	Medical implants, aerospace, high-performance applications

Key Points:

• Grades 1–4 are commercially pure titanium, offering increasing strength with decreasing ductility.
• Grade 5 (Ti-6Al-4V) is the most widely used titanium alloy for its excellent mechanical properties.
• Grade 23 is a medical-grade version of Grade 5 with enhanced biocompatibility.
• Grade 9 provides a good balance of strength and formability, often used in tubes and piping.