UNS Number R52400

Titanium Grade 7 is an unalloyed titanium grade with standard oxygen content and addition of palladium.  It is used mildly reducing or fluctuating conditions. At room temperature it is an alpha alloy. It transforms to beta phase at 913°C, and the alpha phase returns on cooling 890°C.

 

Available Forms of Titanium Grade 7 at Rooplaxmi Steels:

•           Bar
•           Sheet
•           Plate
•           Pipe & Tube (welded and seamless)
•           Wire

 

Characteristics of Titanium Grade 7:

•           Excellent Welding and Fabrication Properties
•           Extremely resistant to corrosion especially from acids due to the addition of palladium.

 

Titanium Grade 7 Chemical Composition, %:

C	N	Ti	Fe	O	H	Pd
0.08 max	0.03 max	Balance	0.30 max	0.25 max	0.015 max	0.12-0.25

 

Application of Titanium Grade 7:

•           Chemical Industry, especially in chloride-containing media
•           Reactor autoclaves, piping and fittings, valves, heat exchangers and condensers.

 

Machining and Fabrication with Titanium Grade 7:

Titanium grade 7 is forged by conventional processes within the narrow temperature range 815 – 900°C. Titanium grade 7 is readily machinable by conventional methods. It readily weldable by GMAW and GTAW processes. It is annealed at 670 – 750°C, still air cooled. Pickling to remove the “alpha case” may be needed before further fabrication or machining. Stress relief at 480 – 595°C, air cooled, may be required to improve dimensional stability for critical components

Titanium Grade 7 ASTM Specification:

Pipe Smls	Pipe Welded	Tube Smls	Tube Welded	Sheet / Plate	Rod and Bar	Forgings
B337	B337	B338	B338	B265	B348	B381

 

Mechanical Properties of Titanium Grade 7:
Typical Mechanical Properties, Annealed:

Tensile Strength	345 MPa or 50 Ksi min
Yield	(0.2 % offset) 275-450 MPa Or 40-65 Ksi
Elongation in 2”	20 %