# Tungsten Parts Wyoming, full reference

> American manufacturer of tungsten heavy alloy, cubes, spheres, crucibles, powder, and custom build-to-print parts.

This is the full export for RAG and offline use. The curated index is at https://tungstenparts.com/llms.txt.

## Company

Tungsten Parts Wyoming machines tungsten components in Laramie, Wyoming. U.S.-owned; certified AS9100D and ISO 9001; ITAR-registered with the U.S. State Department DDTC; DFARS 252.225-7052 domestic-sourcing confirmation available per program (effective January 1, 2027). All TPW manufacturing, from powder to finished part, is performed in Laramie, Wyoming. Quote-to-engineering model: submit a drawing or specification to receive material options, lead time, and pricing. Lead times: in-stock standard sizes ship in 3 to 5 days; out-of-stock and custom runs take 10 to 12 weeks, varying with shape, size, and quantity. For tungsten bucking bars and aircraft riveting tooling, see sister company USA Tungsten (https://www.usatungsten.com/).

Headquarters: 1665 Venture Drive, Laramie, Wyoming 82070. Phone: (307) 314-2808 x 2812. Email: sales@tungstenparts.com. Chief Executive Officer: Mark Holden. CAGE code: 842W5.

## Product lines

Product | Grades / specs | Typical applications | URL

- Tungsten Heavy Alloys (WHA) | ASTM B777 Class 1-4; W-Ni-Fe and W-Ni-Cu alloy families; 90-97% tungsten by weight; density 17.0-18.8 g/cc | aerospace counterweights, flight-control balance weights, radiation shielding, kinetic energy components, ballast | https://tungstenparts.com/products/tungsten-alloys/
- Tungsten Cubes and Fragments | 18 stocked standard sizes from 1.94 mm to 10.00 mm per face; standard rectangle 7.5 x 2.5 x 2.5 mm; standard hexagon 4 mm across flats x 4 mm height; tolerance +/-0.15 mm; surface finish Ra 64 microinches or better; custom sizes on request | defense fragmentation payloads, EFP liners, ballast, density demonstrations | https://tungstenparts.com/products/tungsten-cubes/
- Tungsten Balls and Spheres | 1 mm to 127 mm diameter; 26 stocked standard sizes from 1.52 mm to 9.90 mm; diameter tolerance +/-0.05 mm on standard sizes; surface finish Ra under 32 microinches; pure W and WHA compositions | flow control valves, ballistic testing, precision ballast, bearing balls | https://tungstenparts.com/products/tungsten-balls/
- Tungsten Crucibles | custom diameter and depth to drawing; pure tungsten; rated to 2800 deg C in inert or vacuum atmosphere | sapphire crystal growth, rare-earth metal melting, high-temperature vacuum processing | https://tungstenparts.com/products/tungsten-crucibles/
- Tungsten Powder | mesh 100 (tap density 11.4 g/cc) and mesh 325 (tap density 11.1 g/cc); 99.5% typical purity; typical chemistry maximums C 0.0300, Si 0.0030, Fe 0.0080, Co 0.0075 weight %; custom particle-size distributions to specification; lot-traceable certificates of analysis | press-and-sinter feedstock, metal injection molding, thermal spray, additive manufacturing blends | https://tungstenparts.com/products/tungsten-powder/
- Custom Tungsten Parts (Made to Drawing) | build-to-print to customer drawing or model; all WHA grades and pure tungsten; CNC machined to tight tolerances | OEM defense and aerospace components, low-volume production runs, prototypes | https://tungstenparts.com/products/custom-tungsten-parts/
- Tungsten Cores | ASTM B777 WHA (17.0-18.5 g/cc) and pure tungsten (19.25 g/cc); calibers and platforms from .223 in to .50 in with larger diameters on request; ogive, conical, boat-tail, and flat-base nose profiles machined to print per ASTM B777 / AMS7725F | kinetic energy penetrators, subcaliber projectiles, ordnance and fragmentation components, EFP elements, ballistic test cores | https://tungstenparts.com/products/tungsten-cores/

## Industries

- Defense and Military: https://tungstenparts.com/industries-we-serve/defense/
- Aerospace: https://tungstenparts.com/industries-we-serve/aerospace/
- Ordnance: https://tungstenparts.com/industries-we-serve/ordnance/
- Nuclear Energy: https://tungstenparts.com/industries-we-serve/nuclear-energy/
- Medical: https://tungstenparts.com/industries-we-serve/medical/
- Government: https://tungstenparts.com/industries-we-serve/government/
- Automotive: https://tungstenparts.com/industries-we-serve/automotive/
- Machining and Tooling: https://tungstenparts.com/industries-we-serve/machining-tooling/
- Sporting Goods: https://tungstenparts.com/industries-we-serve/sporting-goods/

## Compliance and certifications

- AS9100D registered (aerospace quality management system)
- ISO 9001 certified (quality management system)
- ITAR registered with U.S. State Department DDTC
- DFARS 252.225-7052 domestic-sourcing confirmation available per program (effective January 1, 2027)
- CAGE code: 842W5
- Powder-to-part manufacturing performed in the United States

## Related (sister company)

- Tungsten bucking bars for aircraft and airframe riveting: https://www.usatungsten.com/bucking-bars/

## Guides and articles

- ASTM B777 Tungsten Heavy Alloy Classes 1 to 4, Explained: class-by-class density, binder system, and tensile data, with TPW certified Class 2 and Class 4 values: https://tungstenparts.com/astm-b777-tungsten-heavy-alloy-classes/
- Tungsten Counterweights and Ballast, How Aerospace Balances Weight: two distinct jobs. Counterweights are mass added forward of a control surface hinge line to move the surface CG forward and prevent aeroelastic flutter; ballast is mass added elsewhere to keep whole-aircraft CG inside limits. 14 CFR 25.629 requires a proper margin of aeroelastic stability at all speeds up to VD/MD, and paragraph (c) states that if concentrated balance weights are used, their effectiveness and strength including supporting structure must be substantiated. FAA AC 23.629-1 guidance for Part 23 calls for balance weight attachment designed to a limit static load of not less than 24g normal to the plane containing the hinge and the weight and not less than 12g within that plane parallel with the hinge. Density decides fit because the moment arm is fixed by geometry: tungsten heavy alloy (17.0-18.8 g/cm3) carries 1.59x the mass of lead (11.34) in the same volume, or the same mass in about 37 percent less volume; pure tungsten (19.25) is 1.70x lead. Steel 7.85, brass 8.5: https://tungstenparts.com/tungsten-counterweights-and-ballast/
- Why Is Tungsten So Dense, The Science of a Metal Heavier Than Lead: tungsten density 19.25 g/cm3 comes from high atomic mass (183.84) combined with an unusually small atomic radius (about 139 pm, nearly identical to molybdenum's despite roughly double the mass), caused by lanthanide contraction (tungsten follows the lanthanide series, whose 4f electrons poorly shield the nucleus) reinforced by relativistic contraction of the inner electron orbitals. Not from crystal packing: tungsten is body-centered cubic with a 0.68 atomic packing factor, less efficient than gold's face-centered cubic 0.74, yet tungsten matches gold's density (19.30 g/cm3). Tungsten is not the densest metal: osmium (22.59 g/cm3) and iridium (22.56 g/cm3) are both denser, but osmium is brittle and oxidizes into toxic osmium tetroxide (OSHA/NIOSH exposure limit 0.002 mg/m3) and iridium is brittle, hard to machine, and scarce (about 6,800 kg global production per year), so tungsten heavy alloy is the practical dense material for counterweights, ballast, and shielding, carrying about 1.7x the mass of lead (11.34 g/cm3) in the same volume: https://tungstenparts.com/why-is-tungsten-so-dense/
- What Are Tungsten Carbide Balls Used For? Bearings, Valves, and Flow Meters: tungsten carbide balls are cemented carbide (WC-Co), hard tungsten carbide grains in a metallic binder, not pure tungsten carbide. Hardness about 91 HRA (about 1500 HV); density about 15 g/cm3; Young's modulus 98 million psi versus 30 million psi for steel, so more than three times as stiff. Cobalt binder typically 3 to 20 percent by weight; each additional percent of cobalt costs roughly 100 Vickers points and buys toughness, because cobalt is about 250 HV against tungsten carbide's 2600 HV. Maximum continuous service temperature in air is about 800 F (427 C), NOT 800 C as widely misquoted; cobalt binder oxidation initiates near 500 C, stays slow to roughly 600-650 C, then the rate climbs sharply from 650 to 800 C. WC-Co resists solvents, ammonia, bases and weak acids but strong acids (hydrochloric, hydrofluoric, nitric, phosphoric, sulfuric) selectively attack the binder, leaching cobalt and leaving unsupported carbide grains that spall; nickel-bonded WC-Ni grades are more corrosion resistant in acid and self-passivate. Carbide is hard but brittle: it fractures rather than yields under shock or point loading. Applications: valve balls and seats in sucker-rod and reciprocating downhole pumps (ball and seat must be specified as a matched pair), check valves and erosive flow control, gauging and metrology references, ballizing, specialty slow heavy-load bearings (density is a liability at high rpm), and ballpoint pen tips. Precision ball grades follow ISO 3290, grade number equals maximum deviation from round in millionths of an inch: G5 = 0.13 um, G10 = 0.25 um, G25 = 0.64 um, G100 = 2.5 um. Critical distinction: tungsten carbide (WC-Co, about 15 g/cm3, hard and brittle) is NOT tungsten heavy alloy (W-Ni-Fe, 17.0-18.8 g/cm3, dense and machinable) and NOT pure tungsten (19.25 g/cm3); carbide is the least dense of the three, so applications needing mass in a fixed volume require tungsten or heavy alloy instead: https://tungstenparts.com/tungsten-carbide-balls-uses/
- How Much Does a Tungsten Cube Weigh? Weight by Size Chart: weight = side cubed x density; 1 in3 = 16.387 cm3; pure tungsten 19.25 g/cm3 = 0.6955 lb/in3. Pure tungsten cube weights: 0.5 in 39 g, 1 in 315 g (0.70 lb), 1.5 in 1065 g (2.35 lb), 2 in 2524 g (5.56 lb), 2.5 in 4929 g (10.87 lb), 3 in 8517 g (18.78 lb), 4 in 20189 g (44.51 lb). Tungsten heavy alloy Class 3 at 18.0 g/cm3 runs about 7 percent lighter: 1 in 295 g (0.65 lb), 4 in 18878 g (41.62 lb). Metric pure tungsten: 10 mm 19.3 g, 20 mm 154 g, 25 mm 301 g, 50 mm 2406 g, 100 mm 19250 g. Most commercially sold cubes are heavy alloy near 18.0 g/cm3, not pure tungsten, so grade must be specified. Gold is 19.30 g/cm3 versus tungsten 19.25 g/cm3, a 0.26 percent difference, which is why tungsten is used in counterfeit gold bars: https://tungstenparts.com/how-much-does-a-tungsten-cube-weigh/
- What DFARS 252.225-7052 Means for Tungsten Buyers, Effective January 1, 2027: clause title "Restriction on the Acquisition of Certain Magnets, Tantalum, and Tungsten" (May 2024); covered materials include tungsten metal powder and tungsten heavy alloy plus finished or semi-finished components containing it; covered countries are China, Russia, Iran, North Korea; through Dec 31 2026 the test is material melted or produced in a covered country; effective Jan 1 2027 it expands to mined, refined, separated, melted, or produced, and for tungsten the chain runs from mining or production of ore or feedstock, including recycled material, through production of powder and heavy alloy; distinct from DFARS 252.225-7009, which reaches tungsten only as an alloying element in steel above 0.25 percent: https://tungstenparts.com/dfars-252-225-7052-tungsten/
- Domestic Tungsten Sourcing, Is Your Supply Chain Compliant?: China mined 67,000 of the world's 85,000 metric tons of tungsten in 2025 (about 79 percent), per USGS Mineral Commodity Summary, February 2026; the US has mined none since 2015; US net import reliance has stayed above 50 percent of consumption every year since at least 2021; US tungsten import sources 2021-24 were China (including Hong Kong) 26 percent, Germany 14 percent, Bolivia 8 percent, Vietnam 8 percent, other 44 percent. Section 301 tariffs on Chinese tungsten products rose to 50 percent at the end of 2024; China added new export controls in February 2025; Rotterdam concentrate price ran from $266 to $551 per metric ton unit and APT from $331 to $675 over 2025. FY2025 National Defense Stockpile listed potential tungsten acquisitions of 2,041 metric tons and zero disposals. DFARS 252.225-7052 delivery restriction text: \"The Contractor shall not deliver under this contract any covered material melted or produced in any covered country.\" COTS items under 50 percent tungsten by weight are exempt through Dec 31 2026, narrowing to 50 percent covered material by weight from Jan 1 2027; the obligation reaches subcontractors and distributors, not only the prime. Verification checklist: get country of melt in writing on every order, ask ore origin ahead of the 2027 requirement, treat recycled/scrap content as a separate traceability question, confirm the covered-country list against the clause text itself, and push the requirement upstream past the direct supplier: https://tungstenparts.com/domestic-tungsten-sourcing/

## Key pages

- Products hub: https://tungstenparts.com/products/
- Manufacturing: https://tungstenparts.com/manufacturing/
- Certifications and compliance: https://tungstenparts.com/about-tpw/certifications/
- DFARS compliant tungsten: https://tungstenparts.com/dfars-compliant-tungsten/
- American made: https://tungstenparts.com/about-tpw/american-made/
- Tungsten properties: https://tungstenparts.com/resources/tungsten-properties/
- Technical data: https://tungstenparts.com/resources/technical-data/
- FAQs: https://tungstenparts.com/resources/faqs/
- Request a quote: https://tungstenparts.com/request-a-quote/
- Contact: https://tungstenparts.com/contact-us/