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Tantalum and Tantalum Alloy Rod and Wire

Tantalum mainly exists in tantalite and co-exists with niobium. Tantalum has moderate hardness [1] and is malleable. It can be drawn into a thin wire-like foil. Its thermal expansion coefficient is very small. Tantalum has excellent chemical properties and high corrosion resistance. It can be used to make evaporating vessels, etc., as well as electrodes, rectifiers, and electrolytic capacitors of electron tubes. Medically used to make thin sheets or thin threads to repair damaged tissues. Although tantalum has strong corrosion resistance, its corrosion resistance is due to the stable tantalum pentoxide (Ta₂O₅) protective film formed on the surface.
Products Inquiry

Product Details

1. Specification: RO5200,RO5252(Ta-2.5W),RO5255(Ta-10W)

2. DiameterSize:Φ0.3mm~Φ100mm;

3. Standard: ASTM B365-98;

Chemical Composition

Content %

Tantalum Grade

Main Composition

The impurity content is not more than

Ta

Nb

Fe

Si

Ni

W

Mo

Ti

Nb

O

C

H

N

Ta1

Balance

~

0.005

0.005

0.002

0.01

0.1

0.002

0.03

0.015

0.01

0.0015

0.01

Ta2

Balance

~

0.03

0.02

0.005

0.04

0.3

0.005

0.1

0.02

0.01

0.0015

0.01

TaNb3

Balance

<3.5

0.03

0.03

0.005

0.04

0.3

0.005

~

0.02

0.01

0.0015

0.01

TaNb20

Balance

17~23

0.03

0.03

0.005

0.04

0.3

0.005

~

0.02

0.01

0.0015

0.01

Ta2.5W

Balance

~

0.005

0.005

0.002

3.0

0.1

0.002

0.04

0.015

0.01

0.0015

0.01

Ta10W

Balance

~

0.005

0.005

0.002

11

0.1

0.002

0.04

0.015

0.01

0.0015

0.01

If the user has special requirements, the two parties specifically negotiate

 

Tolerance

Diameter Inch (mm)

Tolerance +/- Inch (mm)

0.010~0.020 excl (0.254~0.508)

< 0.0005 (0.013) 

 0.020~0.030 excl (0.508~0.762)

< 0.00075 (0.019) 

 0.030~0.060 excl (0.762~1.524)

< 0.001 (0.025) 

 0.060~0.090 excl (1.524~2.286)

< 0.0015 ( 0.038)

 0.090~0.125 excl (2.286~3.175)

< 0.002 (0.051) 

 0.125~0.187 excl (3.175~4.750)

< 0.003 (0.076) 

 0.187~0.375 excl (4.750~9.525)

< 0.004 (0.102) 

 0.375~0.500 excl (9.525~12.70)

< 0.005 (0.127) 

 0.500~0.625 excl (12.70~15.88)

< 0.007 (0.178) 

 0.625~0.750 excl (15.88~19.05)

< 0.008 (0.203) 

 0.750~1.000 excl (19.05~25.40)

< 0.010 (0.254) 

 1.000~1.500 excl (25.40~38.10)

< 0.015 (0.381) 

 1.500~2.000 excl (38.10~50.80)

< 0.020 (0.508) 

 2.000~2.500 excl (50.80~63.50)

< 0.030 (0.762) 

 

Mechanical properties, annealing

Solid Round Bar,Diameter 0.125inch(3.18mm)~2.5 inch (63.5mm)

Tantalum Grade

Rm Tensile Strength Min. Lb/inch2(MPa)

Yield Strength Min. Lb/inch2(MPa)

 

Elongation %

RO5200/RO5400

25000 (172)

15000 (103)

25

RO5252

40000 (276)

28000 (193)

20

RO5255

70000 (482)

55000 (379)

20

RO5240

35000 (244)

15000 (103)

25

 

 

Wire, Diameter, Inch (mm)

Tantalum Grade

Diameter,Inch (mm)

Rm Tensile Strength Min. Lb/inch2

2(MPa)

Elongation,Min.%

RO5200/RO5400

0.010(0.254)~0.0149(0.379)

35000 (241)

10

0.015(0.381)~0.0249(0.633)

35000 (241)

15

0.025(0.635)~0.124(3.14)

30000 (207)

20

RO5252

0.010(0.254)~0.0149(0.379)

40000 (276)

5

0.015(0.381)~0.0249(0.633)

40000 (276)

10

0.025(0.635)~0.124(3.14)

40000 (276)

15

RO5255

0.010(0.254)~0.0149(0.379)

70000 (482)

5

0.015(0.381)~0.0249(0.633)

70000 (482)

10

0.025(0.635)~0.124(3.14)

70000 (482)

15

RO5240

0.010(0.254)~0.0149(0.379)

35000 (244)

10

0.015(0.381)~0.0249(0.633)

35000 (244)

15

0.025(0.635)~0.124(3.14)

35000 (244)

20

 

A 10 inch (254 mm) gauge length is suitable for diameters of 0.050 inch (1.27 mm); a 1 inch (25.4 mm) or 2 inch (50.8 mm) gauge length is suitable for diameters greater than 0.050 inch (1.27 mm). If there are special requirements, the two parties will make specific agreement.



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