Mo Ta Nb W

Refractory Metal
Bar & Plate

High-performance refractory metal stock in plate, sheet, rod, bar, and wire forms. We supply molybdenum (Mo), tantalum (Ta), niobium (Nb), and tungsten (W) mill products for high-temperature, corrosion-resistant, and extreme-environment applications. Available in standard ASTM sizes and custom dimensions, with material certifications to ASTM B386 (Mo), ASTM B708 (Ta), ASTM B392 (Nb), and ASTM B760 (W). All stock is US-sourced, ITAR registered, and DFARS compliant with full heat lot traceability.

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AS9100D Certified

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ISO 9001:2015

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US Manufacturing

Refractory Metal Powder Applications

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High-temperature furnace components

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Aerospace structural parts

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Medical device manufacturing

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Semiconductor processing

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Glass industry tooling

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Vacuum furnace fixtures

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Chemical processing equipment

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Nuclear applications

Why Choose Metal Powder Supply

Tungsten powder metallurgy product for defense applications

US Production

Produced from EB and VAR melted ingot in the US. Available in plate, sheet, rod, bar, and wire. Custom sizes and thicknesses. Cut-to-length and precision finishing available.

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Certified Network

AS9100D, ISO 9001:2015, ITAR registered, DFARS compliant. Full material certification and traceability. ASTM B386/B387, B708/B365, B392/B393, B760/B761.

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Custom PSDs

Stock inventory of common gauges and thicknesses. Custom cutting to your specifications. Diameters, gauges, cut-to-length rod and wire. Rush delivery available.

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Technical Support

Material selection guidance for your application. Mechanical property data, temperature ratings, and melting specifications. Technical support from our engineering team.

Why Choose Our Refractory Metal Powder

Tungsten powder metallurgy product for defense applications

Industry Leader

Molybdenum bar and plate provide excellent creep resistance and thermal conductivity in high-temperature furnace applications and vacuum systems. Tantalum sheet and rod deliver superior corrosion resistance in chemical processing equipment and aggressive electrolytes. Niobium plate and wire excel in structural applications requiring high strength-to-weight ratios and cryogenic performance. Tungsten rod and bar withstand extreme temperatures in aerospace propulsion, nuclear fuel assemblies, and semiconductor processing. Each metal is available in mill-certified forms with full traceability for aerospace and defense supply chains.

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Quality Assured

All material conforms to ASTM B386/B387 (molybdenum), B708/B365 (tantalum), B392/B393 (niobium), and B760/B761 (tungsten). Material is produced from EB or VAR melted ingot and tested per ASTM requirements. Mill test reports and certified mechanical properties accompany every shipment. Dimensional inspection, hardness testing, and grain analysis available. Full traceability from ingot melt lot through finished product. Certification packages support aerospace, defense, and nuclear compliance documentation.

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Expert Support

Our technical team assists with material selection, specification interpretation, and application guidance. We provide mechanical property data, temperature ratings, corrosion resistance comparisons, and welding/machining guidance. RFQ support includes lead time estimates, quantity pricing, and custom cutting. Order coordination handles dimensional verification, inspection reports, and expedited delivery. Material substitution consultation available for cost or availability optimization.

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Material Selection: Mo, Ta, Nb & W Mill Products

Molybdenum excels in high-temperature vacuum and inert atmosphere service above 1800°C. High thermal conductivity and low thermal expansion make it ideal for furnace liners, heating elements, and support structures. Tensile strength increases with temperature, enabling sustained loading in extreme thermal gradients. Tantalum offers unmatched corrosion resistance in aggressive chemical environments—used in heat exchangers, chemical reactors, and electrolytic cells. Its high melting point (3017°C) and excellent ductility allow fabrication into complex shapes. Niobium provides strength-to-weight advantages in cryogenic and moderately elevated temperature service. Superior weldability and absence of embrittlement make it preferred for structural aerospace applications and superconducting magnets. Tungsten stands alone for extreme high-temperature applications exceeding 3000°C—critical for nuclear fuel assemblies, rocket nozzles, and X-ray targets. Highest density and hardness enable compact, high-performance designs. Each metal’s temperature range, strength profile, and corrosion behavior dictate application fit. Selection depends on thermal duty, chemical environment, fabrication method, and cost constraints.

Specifications, Forms & Certification

Molybdenum bar and plate conform to ASTM B386 (plate, sheet) and B387 (rod, wire, bar). Available in commercial, high-purity, and specialty grades. Melted via EB (electron beam) or VAR (vacuum arc remelting) for cleanliness and microstructural control. Tantalum products meet ASTM B708 (plate, sheet) and B365 (rod, wire, bar). Supplied in commercial and aerospace grades. Niobium bar, plate, and sheet conform to ASTM B392 (unalloyed) and B393 (alloys). VAR melting standard for aerospace applications. Tungsten products follow ASTM B760 (plate, sheet) and B761 (rod, wire, bar). Available in pure tungsten and tungsten heavy alloy (WHA). Each specification includes tensile strength, elongation, hardness, and purity requirements. Melting method influences recrystallization behavior, grain size, and mechanical properties. Full material certification includes chemistry analysis, hardness, tensile testing, and density verification per ASTM requirements.

Ordering Refractory Metal Stock

Stock inventory includes common plate thicknesses (0.125" to 1.0"), sheet gauges, and rod diameters for Mo, Ta, Nb, and W. Custom sizes cut to your specifications. Lead times vary by form and material—sheet 2–3 weeks, rod 3–4 weeks, custom plate 4–6 weeks. Minimum quantities depend on form and specification. Stock items typically require 1–2 week lead time. Pricing based on size, melting method, certification level, and quantity. RFQ submission includes material specification, form, dimensions, and application. Custom cutting, surface finishing, and annealing available. Material can be shipped with or without protective coating. Full mill test reports and inspection certificates included. Expedited delivery and rush cutting supported for critical schedules.

Material Selection: Mo, Ta, Nb & W Mill Products

Molybdenum excels in high-temperature vacuum and inert atmosphere service above 1800°C. High thermal conductivity and low thermal expansion make it ideal for furnace liners, heating elements, and support structures. Tensile strength increases with temperature, enabling sustained loading in extreme thermal gradients. Tantalum offers unmatched corrosion resistance in aggressive chemical environments—used in heat exchangers, chemical reactors, and electrolytic cells. Its high melting point (3017°C) and excellent ductility allow fabrication into complex shapes. Niobium provides strength-to-weight advantages in cryogenic and moderately elevated temperature service. Superior weldability and absence of embrittlement make it preferred for structural aerospace applications and superconducting magnets. Tungsten stands alone for extreme high-temperature applications exceeding 3000°C—critical for nuclear fuel assemblies, rocket nozzles, and X-ray targets. Highest density and hardness enable compact, high-performance designs. Each metal’s temperature range, strength profile, and corrosion behavior dictate application fit. Selection depends on thermal duty, chemical environment, fabrication method, and cost constraints.

Specifications, Forms & Certification

Molybdenum bar and plate conform to ASTM B386 (plate, sheet) and B387 (rod, wire, bar). Available in commercial, high-purity, and specialty grades. Melted via EB (electron beam) or VAR (vacuum arc remelting) for cleanliness and microstructural control. Tantalum products meet ASTM B708 (plate, sheet) and B365 (rod, wire, bar). Supplied in commercial and aerospace grades. Niobium bar, plate, and sheet conform to ASTM B392 (unalloyed) and B393 (alloys). VAR melting standard for aerospace applications. Tungsten products follow ASTM B760 (plate, sheet) and B761 (rod, wire, bar). Available in pure tungsten and tungsten heavy alloy (WHA). Each specification includes tensile strength, elongation, hardness, and purity requirements. Melting method influences recrystallization behavior, grain size, and mechanical properties. Full material certification includes chemistry analysis, hardness, tensile testing, and density verification per ASTM requirements.

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Ready to discuss your refractory metal bar and plate requirements? Our team provides fast RFQ turnaround, technical support, and competitive pricing on all refractory alloys and forms. Contact us today.

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