Product information
Titanium properties & sizes.

SEAMLESS TITANIUM AND TITANIUM ALLOY PROCESS INDUSTRY TUBING
Delivery form
Size range OD 6 - 40 mm *
Wt 0,5-5,0 mm lengths up to approx 28 m .
Limitations on certain Od/wt and Od/length combinations.
The tubes can be delivered as straight or U-bent

* Other sizes on request

Our seamless Titanium tubing are normaly delivered in the as coldpilgered,vacuum-annealed and cleaned condition.

The Outer surface will normaly be delivered as polished.

Nondestructive Testing methods are available as Ultrasonic , Eddy Current and Hydropressure testing .

Extensive laboratory recources are available for chemistry, metallurgical examinations and mechanical testing at room and elevated temperatures.

Manufacturing
The Sandvik Titanium tubing are made by a coldpilgering process which will ensure a radial texture with a connected high ductility at any given strength level which is particulary important when the tube ends are expanded into the tube-sheet of an heat exchanger or in any other case where the mechanical characteristics in general and ductility in particular are particulary important.

The tubes are manufactured through a completely integrated process which starts with high vacuum melting of the Titanium sponge.

Completely integrated manufacture at the same site ensures complete Quality Assurance and Quality Control operations throughout the process.

Titanium
The various Titanium Grades as defined by ASTM and ASME are numbered from 1 and upwards where all numbers except 6 and 8 are represented.

Most of the grades are of alloyed type with various additions of for example aluminium, vanadium, nickel, ruthenium, molybdenum, chromium or zirconium for the purpose of improving and/or combining various mechanical characteristics, heat resistance, conductivity, microstructure, creep, ductility, corrosion resistance etc. etc.

Palladium (Pd) and ruthenium (Ru) , Nickel (Ni) and molybdenum (Mo) are elements which can be added to the pure titanium types in order to obtain a significant improvement of corrosion resistance particulary in slightly reducing environments where titanium otherwise might face some problems due to insufficient conditions for formation of the necessary protective oxidefilm on the metalsurface. The formation of a stable and substantially inert protective oxidefilm on the surface is otherwise the secret behind the extraordinary corrosionresistance of titanium.

The mechnical properties of commercially pure titanium are in fact controlled by "alloying" to various levels of oxygen and nitrogen to obtain strength levels varying between approximately 290 and 550 MPa. For higher strength levels alloying elements, e.g. Al and V have to be added . Ti3Al2,5V has a tensile strength of minimum 620MPa in annealed condition and minimum 860 MPa in the as cold worked and stress relieved condition. The CP-titanium grades are nominally all alpha in structure, whereas many of the titanium alloys have a two phase alpha + beta structure. There are also titanium alloys with high alloying additions having an entire beta phase structure . While alpha alloys cannot be heat treated to increase strength , the addition of 2,5% copper would result in a material which responds to solution treatment and ageing in a similar way to aluminium-copper.

ASTM/ASME STANDARDS FOR TITANIUM
B/SB 265-33 Ti and Ti alloy Strip, Sheet and Plate
B/SB 337-83 (87-)Seamless and Welded Ti and Ti alloy Pipe
B/SB 338-91a Seamless and Welded Ti and Ti alloy Tubes for Condensers and Heat Exchangers
B/SB 348-93 Ti and Ti alloy Bars and Billets
B/SB 363-83 (87-)Seamless and Welded Unalloyed Ti and Ti Alloy Welding Fittings
B/SB 367-87 Ti and Ti Alloy Castings
B/SB 381-93 Ti and Ti Alloy Forgings

Are you interested in other materials than titanium? Here is a link to Sandvik stainless heat exchanger tube programme. >>>WWWSteel Seamless Tube & Pipe
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