Tantalum Bars and Rods

Starc Metals is a well-respected manufacturer and supplier located in Canberra, Australia, focusing on top-notch Tantalum Bars and Rods. Known for our precision engineering and unwavering commitment to quality, we ensure that our products meet the highest international standards. Our Tantalum Bars and Rods are celebrated for their remarkable corrosion resistance, impressive melting point, and durability even in the toughest operating conditions. By leveraging cutting-edge manufacturing technology and strict quality control, Starc Metals caters to a variety of industries, offering reliable, high-performance materials that guarantee efficiency, longevity, and exceptional performance in demanding industrial settings.

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Tantalum Bright Bars

Tantalum Alloy Welding Rods

Tantalum Threaded Bars

What is Tantalum Bars and Rods?

Our Tantalum Bars and Rods are made from high-purity tantalum, sometimes alloyed with small amounts of tungsten to boost strength and thermal stability. With a density of about 16.6 g/cm³ and a melting point near 2996°C, tantalum is known for its outstanding corrosion resistance, ductility, and strength. It holds up well under high temperatures and resists most acids. The impressive mechanical properties of tantalum—along with its excellent conductivity and weldability—make it a perfect choice for challenging chemical, thermal, and mechanical environments.

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Tantalum Bars and Rods Specifications

Specification	ASTM B365, ASME SB365
Tantalum Bar Form	Tantalum Round, Hex, Flat, Half Round, Oval, Rectangular in Black & Bright Finish
Tantalum Round Bar Diameter	0.125″ (3.18mm)~2.5″ (63.5mm)
Length	2-12m
Purity	≥99.95% or 99.99%
Tantalum Round Bar Length	1-12m, Random, Fix & Cut Length or as per clients’ requirement

Chemical Compositions of Tantalum Bars and Rods

Type	Ta	W	Nb
R05200 / R05400	Unalloyed (Pure)	–	–
R05252	97.5 %	2.5 %	–
R05255	90 %	10 %	–
R05240	60 %	–	40 %

Mechanical Properties of Tantalum Bars and Rods

Type	Ultimate Tensile Strength min.psi (Mpa)	Yeild Strength min.psi (Mpa)	Elongation, % (min)
R05200 / R05400	25,000(172)	15,000(103)	25
R05252	40,000(276)	20,000(138)	20
R05255	70,000(482)	55,000(379)	20
R05240	35,000(241)	15,000(103)	25

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Tantalum Bars and Rods Types

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Tantalum Bars and Rods Sizes

3/16” (4.76mm)	25mm	2.1/2” (63.5mm)
¼” (6.35mm)	1” (25.4mm)	2.3/4” (69.85mm)
5/16” (7.94mm)	1.1/8” (28.58mm)	3” (76.2mm)
3/8” (9.53mm)	30mm	3.1/4” (82.55mm)
10mm	1.1/4” (31.75mm)	3.1/2” (88.9mm)
12mm	1.3/8” (34.93mm)	4” (101.6mm)
½” (12.7mm)	1.1/2” (38.1mm)	4.1/2” (114.3mm)
15mm	40mm	5” (127mm)
5/8” (15.88mm)	1.3/4” (44.45mm)	5.1/2” (139.7mm)
¾” (19.05mm)	2” (50.8mm)	6” (152.4mm)
20mm	2.1/8” (53.98mm)	7” (177.8mm)
7/8” (22.23mm)	2.1/4” (57.15mm)	8” (203.2mm)

Tantalum Bars and Rods Weight Chart

Size	Kgs / Foot	Kgs / Mtr	Size	Kgs / Foot	Kgs / Mtr	Size	Kgs / Foot	Kgs / Mtr
3mm	0.017	0.055	20mm	0.753	2.470	3″	10.900	35.762
1/8″	0.019	0.062	22mm	0.908	2.979	3-1/4″	12.800	41.996
5/32″	0.029	0.095	7/8″	0.926	3.038	3-1/2″	14.850	48.772
4mm	0.030	0.098	24mm	1.080	3.543	3-3/4″	17.001	55.780
3/16″	0.043	0.141	25mm	1.180	3.871	4″	19.306	63.340
5mm	0.047	0.154	1″	1.210	3.970	4-1/4″	21.908	72.249
7/32″	0.058	0.190	26mm	1.271	4.170	4-1/2″	24.4487	80.340
6mm	0.068	0.223	27mm	1.368	4.490	4-3/4″	27.366	90.249
1/4″	0.076	0.249	1-1/8″	1.534	5.033	5″	30.461	99.940
7mm	0.091	0.298	30mm	1.691	5.548	5-1/2″	36.690	121.000
5/16″	0.118	0.387	1-1/4″	1.924	6.349	6″	43.860	143.900
8mm	0.120	0.398	32mm	1.894	6.314	6-1/2″	51.093	167.630
9mm	0.152	0.498	1-3/8″	2.303	7.550	7″	59.432	196.000
3/8″	0.170	0.557	35mm	2.390	7.553	7-1/2″	68.226	225.000
10mm	0.189	0.620	36mm	2.438	7.999	8″	77.586	254.55
11mm	0.228	0.748	38mm	2.792	8.903	10″	121.048	397.140
7/16″	0.232	0.761	1-1/2″	2.715	8.951
12mm	0.271	0.889	40mm	3.009	9.872
1/2″	0.303	0.994	1-5/8″	3.200	10.449
13mm	0.318	1.043	1-3/4″	3.712	12.179
14mm	0.368	1.207	45mm	3.807	12.555
9/16″	0.383	1.256	1-7/8″	4.260	13.977
15mm	0.424	1.391	48mm	4.330	14.205
5/8″	0.473	1.551	50mm	4.698	15.414
16mm	0.481	1.578	2″	4.848	15.906
17mm	0.543	1.791	2-1/8″	5.475	17.963
11/16″	0.573	1.880	2-1/4″	6.135	20.128
18mm	0.610	2.001	60mm	6.768	22.205
3/4″	0.682	2.237	2-3/8″	6.838	22.435
			2-1/2″	7.576	24.856
			2-5/8″	8.354	27.409
			2-3/4″	9.169	30.083

Frequently Asked Questions (FAQ)

Are Tantalum Bars And Rods Corrosion-resistant?

Yes, tantalum bars and rods are highly corrosion-resistant, especially to acids, alkalis, and high temperatures, making them ideal for harsh environments like chemical processing and aerospace applications.

What Is The Difference Between Annealed And Non-annealed Tantalum Bars And Rods?

Annealed tantalum bars and rods are heat-treated for improved ductility and softness, while non-annealed ones are harder and more brittle, retaining their as-cast properties. Annealed versions are easier to shape.

How Is The Surface Finish Of Tantalum Bars And Rods?

The surface finish of tantalum bars and rods is typically smooth, with a polished or matte appearance, depending on the manufacturing process. It can be further refined for specific applications, such as high-precision or cosmetic uses.

Tantalum Bars and Rods Uses

Tantalum Bars and Rods find applications in various industries that require exceptional corrosion resistance and heat stability. In the chemical processing field, they are used in heat exchangers, reactors, and evaporators that come into contact with aggressive acids. The electronics sector utilizes them in the production of capacitors, semiconductor manufacturing, and sputtering targets. Their biocompatibility also makes them ideal for surgical instruments and medical implants. In aerospace and defense, tantalum components are reliable under high-stress, high-temperature conditions. Furthermore, they are essential in furnace parts and nuclear technology, where durability and resistance to extreme environments are crucial.

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