Tantalum Sheet & Plate

  • Tantalum sheet
  • Tantalum plate

Product Details

Tantalum Sheet & Tantalum Plate Products Standard

All tantalum sheet and tantalum plate (UNS R05200, UNS R05400), Ta2.5W sheet and Ta2.5W plate (UNS R05252), Ta10W sheet and Ta10W plate (UNS R05255), Ta-40Nb sheet and Ta40Nb plate (UNS R05240) follow ASTM B708.

Tantalum Sheet & Tantalum Plate Production Technology

  • Almost all tantalum plates use cold working methods. And most of all thick plates are annealed in vacuo. Since there is no phase transition, the speed of heating and cooling is not important. Usually we use quadruplex rolling machine at this stage. And because tantalum is a soft metal, we should pay attention to avoid scratch during all process and delivery.

  • Usually start from 150 ~ 300mm tantalum ingot to 80 ~ 100mm thickness plate, then cold rolling from this plate. The compression ratio can be over 95%.

  • The typical rolling is under room temperature or similar to room temperature to avoid developing oxide at surface.

  • When heat rolling is needed, the temperature raises to 1000˚C and intense oxidation happens due to recrystallization.

Tantalum
Products Grade ASTM Standard
Ta Sheet R05200 ASTM B708
Ta2.5W Sheet R05252 ASTM B708
Ta10W Sheet R05255 ASTM B708
Ta40Nb Sheet R05240 ASTM B708
Chemical Requirements
Content, Max, Weight%
Element Electron-Beam Cast/Vacuum-Arc Cast R05200 Unalloyed Tantalum Sintered R05400 Unalloyed Tantalum Electron-Beam Cast/Vacuum-Arc Cast R05255 90%Tantalum 10%Tungsten Electron-Beam Cast/Vacuum-Arc Cast R05252 97.5%Tantalum 2.5%Tungsten Electron-Beam Cast/Vacuum-Arc Cast R05240 60%Tantalum 40%Niobium
C 0.010 0.010 0.010 0.010 0.010
O 0.015 0.03 0.015 0.015 0.020
N 0.010 0.010 0.010 0.010 0.010
H 0.0015 0.0015 0.0015 0.0015 0.0015
Fe 0.010 0.010 0.010 0.010 0.010
Mo 0.020 0.020 0.020 0.020 0.020
Nb 0.100 0.100 0.100 0.50 35.0 - 42.0
Ni 0.010 0.010 0.010 0.010 0.010
Si 0.005 0.005 0.005 0.005 0.005
Ti 0.010 0.010 0.010 0.010 0.010
W 0.05 0.05 9.0 - 11.0 2.0 - 3.5 0.050
Ta Remainder Remainder Remainder Remainder Remainder
Regular Tantalum and Tantalum Alloys Sheet & Plate Dimension
Products Dimension (mm) Shape
Thickness Width Length
Ta Sheet 0.2 - 1.0 1000 100 - 6000 Sheet
Ta2.5W Sheet 0.2 - 1.0 1000 100 - 6000 Sheet
Ta10W Sheet 0.2 - 1.0 650 100 - 6000 Sheet
Ta40Nb Sheet 0.2 - 1.0 650 100 - 6000 Sheet
Grade and Form Annealed Condition
Dimension Ultimate Tensile Strength,
min, psi (MPa)
Yield Strength, min, psi
(MPa) (2 % Offset)
Elongation, min, %
(1-in. Gage Length)
Unalloyed tantalum
(R05200)
(R05400)
Plate, sheet and strip
< 0.060 in. thick
≥0.060 in. thick
30 000 (207)
25 000 (172)
20 000 (138)
15 000 (103)
20
30
90 % tantalum –
10 % tungsten
(R05255)
Sheet and strip
Plate
70 000 (482)
70 000 (482)
60 000 (414)
55 000 (379)
15
20
97.5 % tantalum –
2.5 % tungsten
(R05252)
< 0.125 in. thick
≥0.125 in. thick
40 000 (276)
40 000 (276)
30 000 (207)
22 000 (152)
20
25
60 % tantalum –
40 % niobium
(R05240)
< 0.060 in. thick
≥0.060 in. thick
35 000
35 000
20 000 (138)
15 000 (103)
25
25

Tantalum Sheet & Tantalum Plate Application

Tantalum is very malleable, it can be cold forging, rolling, punching, pulling, spinning, extrusion, bending and so on, hot processing for tantalum needs to be carried out in the inert gas protection state. The high performance tantalum sheet and tantalum strip can be processed into a round cup for six times after the oxidation film is formed on the surface (no need annealed during the procedure).
Tantalum and tantalum alloy sheet are high temperature resistant and corrosion-resistant materials. Its chemical stability is similar to glass, its strength and rigidity can be compared with low carbon steel, its high temperature heat intensity is second only to tungsten and tungsten alloys. With all the properties, tantalum and tantalum sheet are the excellent material for chemical preservation and high temperature furnace.
Tantalum sheet application
The medical specialists made artificial ears from tantalum sheet. After being installed in the head, the skin is transplanted from the leg, and after a period of time, the newly transplanted tantalum ear looks very good, making it almost invisible to the human eye to tell that it is an artificial tantalum ear. And the tantalum sheet can be made into different parts by spinning and deep-draw, such as cup, cap, tube, cone, nozzle, etc. In electronic, high temperature and reactor container area, tantalum sheet also has played a really important role.

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