Product Details

Specifications

tantalum target/ingot
grade: ta1, ta2
Purity:99.95%min
size: 3.0mm up to 120mm Diameter

Tantalum features high melting point , low vapor pressure , good cold processability ,excellent chemical stability , good resistance to corrosion , high dielectric constant ,in surface oxide film .widely used in many industries such as electronics ,metallurgy, chemical processing , hard alloy cutters , aerospace and aviation.

We can produce all kinds of tantalum alloy rods,such as Ta2.5W,Ta10W,Ta40Nb,

size: 3.0mm up to 120mm Diameter x random length, They are very popular in the market on account of their superior quality and competitive price.Special requirements to be agreed on by the supplier and buyer of negotiation.

Table.1.Chemical composition:

Chemistry %
Designation	Chief component		Impurities maxmium
Designation	Ta	Nb	Fe	Si	Ni	W	Mo	Ti	Nb	O	C	H	N
Ta1	Remainder		0.004	0.003	0.002	0.004	0.004	0.002	0.03	0.015	0.004	0.0015	0.002
Ta2	Remainder		0.01	0.01	0.005	0.02	0.02	0.005	0.08	0.02	0.01	0.0015	0.01

Table2. Permissible variations in diameter for rods

Diameter, inch (mm)	Tolerance, +/-inch (mm)
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)

Table3. Mechanical requirements (annealed condition)

Rod, Diameter 0.125" (3.18mm)~2.5" (63.5mm)
Grade	Tensile strength, psi (MPa), ≥	Yield strength, psi (MPa), ≥	Elongation in 1 inch gage length, %, ≥
RO5200/RO5400	25000 (172)	15000 (103)	25
RO5252	40000 (276)	28000 (193)	20
RO5255	70000 (482)	55000 (379)	20
RO5240	40000 (276)	28000(193)

Physical Properties		Tantalum
Atomic Number		180.95
Density		16.6 g/cc
Melting Point		3290 K, 2996°C, 5462°F
Boiling Point		5731 K, 6100°C, 9856°F
Coefficient of Thermal Expansion (20°C)		6.5 x 10(-6) / °C
Electrical Resistivity (20°C)		13.5 microhms-cm
Electrical Conductivity		13% IACS
Specific Heat		.036 cal/g/°C
Thermal Conductivity		.13 cal/cm(2)/cm°C/sec
Annealed	Ultimate Tensile Strength	285 M Pa (41 ksi)
	Yield Strength	170 M Pa (25 ksi)
	% Elongation	30%+
	%Reduction in Area	80% +
Cold Worked	Ultimate Tensile	650 M Pa
	Strength	(95 ksi)
	% Elongation	5%
Hardness	Annealed	90 HV
	Cold Worked	210 HV
Poisson's Ratio	0.35
Strain Hardening Exponent		0.24
Elastic Modulus Tension		186 G Pa (27 x 10(-6) psi)
Ductile Brittle Transition Temperature		< 75 ° K
Recrystallization Temperature		900 - 1200 °C