Tantalum Sheet

Brief introduction:

Tantalum source is one kind of metallic element. Tantalum sources of our country make up 14.22% of total world’s tantalum storage. On recent market, demand for tantalum keep weak stability and tantalum price remains stable.

Tantalum sheet is produced from tantalum powder by cold rolling or hot rolling processing. Purity of tantalum sheet is 99.95%or 99.99%. Standard of tantalum sheet is conform with ASTM B 708 98.

Properties of tantalum sheet:

Properties of tantalum sheet is same with those of tantalum, such as hard texture and high corrosion resistance.

Classifications of tantalum sheet:

Tantalum sheet can be grouped into tantalum plate, tantalum strip and tantalum foil according to different sizes.

Specifications of tantalum sheet:

Table 1: Sizes

Size Thickness (mm) Width (mm) Length (mm)
Foil 0.03-0.07 30-200 >50
Sheet 0.07-0.5 30- 700 30-2000
Board 0.5-10 50-1000 50-3000

Table 2: Chemical composition:

chemistry%
designation chief component impurities maximum
Ta Nb Fe Si Ni W Mo Ti Nb O C H N
Ta1 Remainder 0.004 0.003 0.002 0.004 0.006 0.002 0.03 0.01 0.004 0.0015 0.002
Ta2 Remainder 0.01 0.01 0.005 0.02 0.02 0.005 0.08 0.015 0.01 0.0015 0.01
TaNb3 Remainder <3.5 0.01 0.01 0.005 0.02 0.02 0.005 0.015 0.01 0.0015 0.01
TaNb20 Remainder 17.0-
23.0
0.01 0.01 0.005 0.02 0.02 0.005 0.015 0.01 0.0015 0.01
Ta2.5W Remainder 0.005 0.003 0.002 3.0 0.006 0.002 0.04 0.015 0.005 0.0015 0.006
Ta10W Remainder 0.005 0.003 0.002 11 0.006 0.002 0.04 0.015 0.005 0.0015 0.006
special require to be agreed on by the supplier and buyer of negotiations.

Table 3. Mechanical requirements (annealed condition)

Grade and size Annealed
Tensile strength
min, psi (MPa)
Yield strength min,psi (MPa)(2%) Elongation min, % (1 inch gage length)
Sheet, foil. and board (RO5200, RO5400) Thickness<0.060″(1.524mm)
Thickness≥0.060″(1.524mm)
30000 (207) 20000 (138) 20
25000 (172) 15000 (103) 30
Ta-10W (RO5255)
Sheet, foil. and board
70000 (482) 60000 (414) 15
70000 (482) 55000 (379) 20
Ta-2.5W  (RO5252)
Thickness<0.125″ (3.175mm)
Thickness≥0.125″ (3.175mm)
40000 (276) 30000 (207) 20
40000 (276) 22000 (152) 25
Ta-40Nb   (RO5240)
Thickness<0.060″(1.524mm)
40000 (276) 20000 (138) 25
Thickness>0.060″(1.524mm) 35000 (241) 15000 (103) 25