Tantalum Bars and Rods

Brian Fasteners distributes high-purity rods and bars of tantalum from Houston, USA, with unrivaled corrosion resistance and severe chemical exposure. Tantalum possesses remarkable biocompatibility, a melting point of 3,017°C, and non-reactive nature with the majority of acids—making it a critical material in chemical processing, electronics, and medical fields. Our tantalum rods are precision-designed to ASTM and customer-specific tolerances with high density, homogenized grain structure, and strict dimension control. With a robust inventory, technical assistance, and quick fill, Brian Fasteners provides global-class tantalum bar and rod solutions for demanding applications.

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Tantalum Bright Bars

Tantalum Alloy Welding Rods

Tantalum Threaded Bars

What is Tantalum Bars and Rods?

Commercially pure tantalum bars usually have ≥99.9% tantalum, with the trace elements closely controlled. The metal has a tensile strength of 200–450 MPa and yield strength of 150–300 MPa based on annealing. Elongation is more than 20%, offering great ductility and formability. Tantalum maintains its properties to 2500°F and is resistant to corrosion by hydrochloric, nitric, and sulfuric acids. With high density at 16.6 g/cm³, great thermal conductivity, and resistance to embrittlement, tantalum rods are perfect for high-performance structural and chemical service applications.

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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 rods and bars are commonly employed in chemical processing hardware like heat exchangers, reactor linings, and acid-resistant fasteners. Their biocompatibility qualifies them for surgical implants, pacemaker housings, and orthopedic pins. In electronics, they find application in capacitor anodes and high-reliability devices. Aerospace usage encompasses high-temperature shielding and components in propulsion systems. Tantalum‘s inertness and durability also find application in analytical instruments and vacuum furnace parts. For applications involving corrosion-resistant, heat-resistant, and biocompatible metals, tantalum delivers a superior performance profile.

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