Titanium Grades
Grade 1
The first of four commercially pure titanium grades are Grade 1. It is the most supple and ductile of the three grades. It has the best formability, corrosion resistance, and impact toughness of any material. Grade l is the material of choice for any application requiring ease of formability, and it is usually available as titanium plate and tubing.These include:
- Chemical processing
- Chlorate manufacturing
- Dimensional stable anodes
- Desalination
- Architecture
- Medical industryMarine industry
- Automotive partsAirframe structure
Grade 2
Grade 2 titanium is known as the "workhorse" of the commercially pure titanium industry due to its wide range of applications and widespread availability. It has a lot of the same characteristics as Grade 1 titanium, but it's a little bit stronger. Both are resistant to corrosion. Weldability, strength, ductility, and formability are all strong features of this grade.
This makes Grade 2 titanium bar and sheet are the prime choice for many fields of applications:
- Architecture
- Power generation
- Medical industryHydro-carbon processing
- Marine industry
- Exhaust pipe shrouds
- Airframe skin Desalination
- Chemical processing
- Chlorate manufacturing
Grade 3
This is the least common of the commercially pure titanium grades, yet that does not diminish its worth. Grade 3 is stronger than Grades 1 and 2, has similar ductility, and is just slightly less formable than its predecessors, but has higher mechanical properties.
Grade 3 is utilized in applications that require moderate strength as well as significant corrosion resistance.
- These include:
- Aerospace structures
- Chemical processing
- Medical industry
- Marine industry
Grade 4
Grade 4 is the most powerful of the four commercially pure titanium grades. It's also noted for its good formability and butt weldability, as well as its remarkable corrosion resistance.Grade 4 titanium has recently established a niche as medical-grade titanium, despite its usual industrial applications. It's required in situations where considerable strength is required, such as:
- Airframe components
- Cryogenic vessels
- Heat exchangers
- CPI equipment
- Condensor tubing
- Surgical hardware
- Pickling baskets
Titanium Alloys
Grade 7
Grade 7 is mechanically and physically identical to Grade 2, with the exception that it contains the interstitial element palladium, making it an alloy. Grade 7 is the most corrosion-resistant of all titanium alloys, with outstanding weldability and fabricability. It is more corrosion resistant in reducing acids.Grade 7 is used in chemical processes and components of production equipment.
Grade 11
Grade 11 is essentially identical to Grade 1, with the exception that a small amount of palladium has been added to improve corrosion resistance, making it an alloy. In chloride conditions, this corrosion resistance is important for preventing crevice erosion and decreasing acid.Optimal ductility, cold formability, usable strength, impact toughness, and outstanding weldability are among the other beneficial qualities. This alloy is suitable for the same titanium applications as Grade 1, particularly if corrosion is a concern, such as:
-
- Chemical transformations
- Desalination
- Applications in the marine environment
How to Choose the Right Titanium Grades
There are several degrees of commercially pure titanium and titanium alloys available, and you must ensure that you receive the proper forms and grades to finish your job effectively. While all grades are corrosiveresistant, robust, and light, some key variances could affect the ultimate results.When selecting a titanium grade, keep in mind how the metal will be used, the circumstances it will be exposed to, and the size of the titanium pieces. There are four classes of pure-grade titanium, each with its own set of qualities that make it suited for diverse purposes.