Text version of the page

TECHNICAL DATA SHEET

Allvac® 30, 40, 55, & 70 CP Titanium Grades - 32714 Allvac

®

30, 40, 55, & 70 CP Titanium Grades

GENERAL

Allvac
® CP, or Commercially Pure, titanium grades (UNS-R50250, R50400, R50550, & R50700) are used where high ductility combined withexcellent corrosion resistance, moderate strength, and good weldability are desired. The four grade numbers (30, 40, 55, and 70) refer to theapproximate minimum yield strengths for each grade. The different grades are characterized by differences in oxygen levels.These four titanium grades are produced by vacuum arc remelting. Typical product forms are billet, rolled bar, rod, and drawn wire products forapplications such as airframe skin and structural components, cryogenic vessels, heat exchangers, chemical processing equipment, and medical andsurgical device applications.

SPECIFICA TIONS PHY SICAL PR OPER TIES

? ASTM Grades I, II, III, & IV (Allvac 30, 40, 55, & 70) Melting Range: 3,000-3,040

°

F , (1,649 - 1,671 ° C) ? ASTM B 348 - Bars and Billets Density:0.163lbs/in
3 ; 4.51 gm/cm
3 ? AMS 4921 - Bars, Wire, and Forgings Beta Transus Temperature:Allvac 30 1,630 ? ASTM F 67 - Unalloyed Titanium

°

F ± 25

°

F (888 ° C ± 4° C )Allvac 40 1,675 ? ISO 5832-2 - Unalloyed Titanium

°

F ± 25

°

F (913 ° C ± 4° C )Allvac 55 1,690

°

F ± 25

°

F (921 ° C ± 4° C )Allvac 70 1,740

°

F ± 25

°

F (949 ° C ± 4° C )

HEA T TREA TMENT

Commercially pure titanium can be annealed by heating to 1,000 - 1,300

°

F (538 - 704 ° C) for 1/2 to 2 hours and air cooling. Stressrelief annealing can be achieved by heating to 1,000 - 1,100

°

F (538 - 593 ° C) for 30 minutes followed by air cooling.

HARDNESS

Typical annealed hardness in the annealed condition for Allvac 40 titanium is approximately Rockwell B80 and for Allvac 70titanium about Rockwell B100.

FORGEABILITY / FORMABILITY

Commercially pure titanium is readily finish forged from 600 - 1,200

°

F (316 - 649 ° C). Reductions of 25-40% below the Beta transusare necessary to obtain optimum properties. At room temperature CP titanium has limited formability. Temperatures from 400 to1,000

°

F (204 - 538 ° C) are normally used for deep drawing, spinning and other forming operations.

MA CHINABILITY

Commercially pure titanium can be machined using practices for austenitic stainless steels using slow speeds, heavy feeds, rigid tooling andlarge amounts of non-chlorinated cutting fluid.

WELD ABILITY

Commercially pure titanium is easily welded if proper precautions are taken to prevent oxygen, nitrogen, and hydrogen contamination.Fusion welding can be done in inert gas filled chambers or using inert gas shielding of the molten weld metal and the adjacent heated zonesusing a trailing shield. Spot, seam, and flash welding can be performed without resorting to protective atmospheres.

SPECIAL PRECA UTIONS

Commercially pure titanium can be subject to hydrogen contamination during improper pickling and by oxygen, nitrogen, and carbonpickup during forging, heat treating, brazing, etc. This contamination results in a deterioration in ductility which adversely effects notchsensitivity and forming characteristics.
Data are typical and should not be construed as maximum or minimum values for specification or for final design. Data on any particularpiece of material may vary from those shown herein. Allvac ® is a registered trademark of ATI Properties, Inc. © Copyright, Allvac 2003. 08Jun04 Page 1 of 2TI-014/015/035/036 2020 Ashcraft Ave ? PO Box 5030 ? Monroe, NC 28110-5030 ? (704) 289-4511 ? Fax (704) 289-4018 ? www.allvac.com