ASTM B365 Tantalum Alloy Wire

ASTM B365 Tantalum Alloy Wire: Ta10W and Ta40Nb for Chemical, Vacuum and Medical Use

Shaanxi Chuanghui Daye Metal Material Co., Ltd. (Chdymetal) supplies refractory metal products. Among the items is ASTM B365 Tantalum Alloy Wire, offered in Ta10W and Ta40Nb grades. The plant is in Baoji High-tech Development Zone, Shaanxi. Rare metals have been our founder's work for more than 30 years. Want more tensile strength than pure tantalum gives you? Take Ta10W. With Ta40Nb (Class R05240) you shed about 25% of the weight, and acid resistance stays almost as good as pure tantalum. Purity and size are made to order. Chemical, vacuum and medical projects each get their own spec. Grade selection, specifications, finishes, packing, and the details we need for a quote all sit on this page.

Choosing Between Ta10W and Ta40Nb

Ta10W is what you get when tungsten goes into tantalum. Tensile strength lands roughly 80% to 100% higher than pure tantalum. High heat twists it less as well. Springs and heating elements are where this grade earns its place. Need numbers for a design? Ask us which test condition and method stand behind that comparison.

Tantalum and niobium join into a solid-solution alloy. The result is Ta40Nb, listed as Class R05240. Against most strong acids its corrosion resistance tracks pure tantalum almost exactly. HF is the one exception. Lower cost than pure tantalum is another plus. Weight falls by about 25%.

Pure tantalum still wins for deep drawing. Same goes for any job that needs the most ductility. Where strength or weight counts for more, pick this product in Ta10W or Ta40Nb. Not sure which grade fits? Send us your service conditions. We will help you narrow it down.

Specifications

If something is missing from that list, the product data behind this page does not give it. Ask Chdymetal to confirm the composition limits, the diameter range, the tolerances and the mechanical properties for your grade and order.

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Electron beam melting

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Forging

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Rolling 

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Machining and forming

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Dimension inspection

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Packaging

Applications

Chemical work uses this product. So do vacuum, aerospace and medical jobs:

• Chemical processing equipment: corrosion-resistant springs, rupture discs and flexible wire mesh packing for distillation columns that handle aggressive acids.
• Vacuum and high-temperature systems: Ta10W springs plus heating elements.
• Aerospace: Ta40Nb for parts where pure tantalum weighs too much.
• Medical devices: suture clips are one place these parts show up. Flexible stents and implantable leads are others.
• Dissimilar metal joining: inside chemical processing equipment, Ta40Nb gets welded to other refractory metals.

Medical Use Considerations

Pure tantalum can be too soft for some jobs. A flexible stent or a suture clip may need more stiffness. That is where alloy wire comes in. Medical Ta40Nb grades are produced by vacuum arc remelting.

Medical requirements differ from one grade and standard to the next. Asking for a quote on ASTM B365 Tantalum Alloy Wire for a medical project? Tell us the specification you have to meet, for example ASTM F560 where it applies, plus any paperwork you need.

Surface Finish

Iron, or drawing lubricant left behind, can set up active corrosion sites or dirty a vacuum chamber. To strip lubricants and surface oxides, Chdymetal supplies wire that is chemically cleaned (acid washed) or electropolished.

Chemically cleaned wire is the recommended pick for vacuum and medical work. Clean welds are easier to get with it too.

Be used in a wide range of industries.

 

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Electronic devices

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Medical implants

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Steel industry

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Chemical Processing

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Aerospace and Defense

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Energy and Environmental Engineering

Welding and Operating Conditions

Ta40Nb takes a weld well with tantalum, niobium, titanium and zirconium. Joining refractory metals of different kinds is exactly what it is used for.

Oxygen must not reach tantalum alloy wire at high temperature. In air the wire starts to oxidize fast once it passes 300 °C. Hot service calls for vacuum. Argon or helium, both inert, does the job too.

ASTM B365 Tantalum Alloy Wire Supply and Customization

Chdymetal makes titanium products as well. Tantalum and niobium sit in that same lineup. Tungsten belongs here too. Molybdenum is part of the mix, and so are zirconium and nickel. Metallurgy buyers use these metals. Electronics plants take them too, along with medical manufacturers and special steel mills. Orders come from more than 50 countries and regions. The United States is on that list. So are Germany, South Korea and Singapore.

To receive a quote quickly, send these details:

• Alloy grade (Ta10W or Ta40Nb)
• Wire diameter and purity
• Surface finish
• End use (chemical, vacuum or medical)
• Required standard or documentation, if any
• Quantity

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ISO 9001:2015

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ISO 9001:2015

Packaging

Wire made from tantalum alloy to ASTM B365 does not come cheap. That is the reason it gets wound on spools built to DIN standards for this product (DIN 125/160, for example). Paper goes between the layers. Without it, the wire would rub against itself. Each spool then goes into a polyethylene bag, and a desiccant pack goes in with it. Boxing is the last step. The box is what keeps knocks and kinks away from the wire. We also supply the ASTM B365 Tantalum Alloy Wire in custom sizes to suit your drawing.

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Property	Specification
Standard	ASTM B365
Material Grades	Pure Tantalum (Ta), Ta-2.5W, Ta-10W
Purity	≥ 99.95% (Higher purity available upon request)
Diameter Range	0.1 mm – 5.0 mm
Density	16.6 g/cm³
Melting Point	2996°C
Tensile Strength	≥ 200 MPa
Surface Condition	Polished, Cleaned, or Oxide-free
Delivery Form	Coil, Spool, or Straight Cut Lengths

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FAQ

Q: How does Ta10W differ from plain tantalum wire?

A: Ta10W is about 80% to 100% stronger in tensile tests. Heated sections of it also keep their shape better. Pure tantalum is the better pick for deep drawing, and for the highest ductility too.

Q: Does this wire work in air when the temperature is high?

A: It does not. Once the temperature goes past 300 °C, tantalum alloy wire oxidizes fast in air. You need vacuum or inert gas instead.

Q: Can it be used for medical devices?

A: You will find alloy wire in suture clips, flexible stents, and implantable leads. Compliance depends on the grade and the standard. When you ask, tell us what you need. Add ASTM F560 if it applies.

Q: What does surface finish do to performance?

A: Dirt and residue can create corrosion spots. They can also contaminate a vacuum. For vacuum and medical work, we recommend chemically cleaned wire.

Q: How does Ta40Nb hold up against pure tantalum in corrosion?

A: It is nearly identical in most strong acids, except HF, at lower cost and about 25% less weight.

Q: Can Ta40Nb be welded to other metals?

A: Yes. Welding to tantalum works. Niobium, titanium, and zirconium do too.

Contact Us

Send your alloy grade, diameter, purity and quantity to info@chdymetal.com. Chdymetal will review the details and reply with a quote for your ASTM B365 Tantalum Alloy Wire order.