Tantalum Rod & Bar

  • Tantalum rod
  • Tantalum bar

Product Details

Tantalum Rod & Tantalum Bar Products Standard

All tantalum rod and bar (UNS R05200, UNS R05400), Ta-2.5W rod and bar (UNS R05252), Ta-10W rod and bar (UNS R05255) and Ta-40Nb rod and bar (UNS R05240) products can meet ASTM B365 for customer to choose.

Tantalum Rod & Tantalum Bar Production Technology

  • To make a rod & bar first we need to forge or extrude the material to suitable size. The representative sections’ yield is 70%~90%. Then we anneal the material. Forging, rolling, extruding and drawing are usually used during reprocessing. The wire need to be forged by regular wire drawing machine.

  • Since the Ta material is so soft, it is easy to have scratches. The maker must pay special attention to the surface situation and use enough lubrication.

  • The tantalum rod and tantalum wire has two types: one is made by forging, extrusion, rolling and grinding. And the other one is made by rolling, forged or pulled. The diameter is between 0.2 and 63.5mm.

Tantalum and Tantalum Alloy Grade and Standard
Products Grade USA standard
Ta Rod R05200 ASTM B365
Ta2.5W Rod R05252 ASTM B365
Ta10W Rod R05255 ASTM B365
Ta40Nb Rod R05240 ASTM B365
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
Nb 0.100 0.100 0.100 0.50 35.0 - 42.0
Fe 0.010 0.010 0.010 0.010 0.010
Ti 0.010 0.010 0.010 0.010 0.010
W 0.050 0.050 9.0 - 11.0 2.0 - 3.5 0.050
Mo 0.020 0.020 0.020 0.020 0.020
Si 0.005 0.005 0.005 0.005 0.005
Ni 0.010 0.010 0.010 0.010 0.010
Ta Remainder Remainder Remainder Remainder Remainder
Tantalum Rod & Bar Dimensions and Tolerance (mm)
Diameter or Length Allowable Deviation of Diameter or Length Specified Length Allowed Deviation
Forged Rod Pultrusion Rod Rolled Rod Grinding Rod
3.0 - 4.5 ± 0.05 ± 0.05 + 5
> 4.5 - 6.5 ± 0.10 ± 0.10 + 5
> 6.5 - 10.0 ± 0.15 ± 0.15 + 5
> 10 - 16 ± 0.20 ± 0.20 + 5
> 16 - 18 ± 1.0 ± 0.30 + 20
> 18 - 25 ± 1.5 ± 1.0 ± 0.40 + 20
> 25 - 40 ± 2.0 ± 1.5 ± 0.50 + 20
> 40 - 50 ± 2.5 ± 2.0 ± 0.60 + 20
> 50 - 65 ± 3.0 ± 2.0 ± 0.80 + 20
We can follow customer's requested tolerance to produce products.
Tantalum Rod & Bar Mechanical Property
Products Diameter/mm  Tensile Strength/MPa Yield Strength/Mpa Elongation/%
Ta 3.0 - 18 ≥ 175 ≥ 140 25
Tantalum and Tantalum Alloys Rod & Bar Mechanical Property (Annealed)
Products Diameter 0.125 in (3.18mm) ~2.5 in (63.5mm)
 Tensile Strength/psi (Mpa)≥ Yield Strength/psi (Mpa)≥ Elongation (Standard 25.4mm)/%
Ta Rod 25000 (172) 15000 (103) 25
Ta2.5W Rod 40000 (276) 28000 (193) 20
Ta10W Rod 70000 (482) 55000 (379) 20
Ta40Nb Rod 35000 (244) 15000 (103) 25

Tantalum Rod & Tantalum Bar Application

Tantalum rod & bar can be used to forge wire. Usually the diameter is 2.5mm. Since tantalum is soft, easy to stick to the model and scratch the surface, when making the wire, people will make the surface of the wire oxidized by anodic oxidation to form an oxidation film and used for lubrication by beeswax.Tantalum rod can be used to repair hip joints, skull and bones, repair bone damaged by the tumor, suture clips, and stent vessels.
Tantalum rod application

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