Leave Your Message
Direct factory supply of high-density tungsten alloys, catering to high-precision toolmakers, sports equipment developers, and high-temperature thermal barrier systems across Tokyo, Osaka, and Nagoya.
Japan has long stood at the pinnacle of global advanced manufacturing, semiconductor lithography, and non-destructive medical diagnosis. Within this demanding technological landscape, Tungsten Heavy Alloys (WHA) Sheets and Plates (specifically formulated as W-Ni-Fe and W-Ni-Cu composites) represent an indispensable class of refractory materials. Featuring densities ranging between 17.0 g/cm³ and 18.5 g/cm³—roughly 60% denser than lead and more than twice the density of standard steel—tungsten heavy alloy sheets solve critical design dilemmas where maximum mass or radiation absorption is required within ultra-compact spatial envelopes.
In regions such as the Keihin Industrial Zone (Tokyo, Kanagawa), the Chukyo Industrial Area (Aichi, Gifu, Mie), and the Hanshin Industrial Region (Osaka, Hyogo), mechanical design engineers encounter strict vibration, shielding, and structural requirements. Tungsten heavy alloy sheets are increasingly specified across four crucial sectors in Japan:
In Japanese wafer fabrication equipment and advanced packaging systems, ultra-flat tungsten alloy sheets serve as radiation collimators, electron beam aperture blocks, and extreme counterweights that prevent nanometer-scale micro-vibrations in EUV/DUV steppers.
Japan is a world leader in heavy-ion radiotherapy and PET/CT diagnostics. Tungsten sheets are machined into precision multileaf collimators (MLC), gamma camera shields, and radiopharmaceutical delivery systems, eliminating the environmental and toxic hazards of lead.
Japanese rail systems and aerospace components demand exceptional dynamic balancing. W-Ni-Fe alloy sheets provide optimal gyroscopic stability, elevator counterbalances, and high-frequency acoustic-mechanical vibration damping in tight structural airframe cavities.
The transition away from hazardous substances under strict Japanese environmental regulations (such as J-Moss and corporate ESG initiatives aligned with global RoHS/REACH standards) has accelerated the replacement of toxic lead (Pb) shields with non-toxic, chemically inert tungsten heavy alloys. Furthermore, Japan's progressive investments in domestic semiconductor foundries—highlighted by projects in Kumamoto (Kyushu's "Silicon Island") and Hokkaido—have generated unprecedented demand for precision ground tungsten sheets capable of withstanding aggressive fluorine/chlorine plasma cleaning environments while providing reliable X-ray containment.
Moreover, Japanese industrial buyers place immense emphasis on surface planarity, dimensional tolerances down to ±0.005mm, uniform grain structure, and zero microscopic sintering voids. A verified supplier and distributor for the Japanese market must therefore bridge advanced powder metallurgy manufacturing with rigorous Japanese quality assurance philosophies (Kaizen, 5S, and Zero-Defect protocols).
To satisfy procurement specifications across Japanese engineering houses, our tungsten heavy alloy sheets conform strictly to international benchmarks including ASTM B777, AMS-T-21014, as well as customized customer drawings under JIS tolerances. Depending on operational exposure to magnetic fields, we formulate both ferromagnetic (W-Ni-Fe) and non-magnetic (W-Ni-Cu) formulations:
| ASTM B777 Class | Nominal Tungsten (wt%) | Nominal Density (g/cm³) | Magnetic Permeability | Typical Hardness (HRC) | Primary Japanese Application Domain |
|---|---|---|---|---|---|
| Class 1 | 90% W (Bal. Ni, Fe or Cu) | 17.00 ± 0.15 | < 1.05 (Cu) / < 2.5 (Fe) | 24 - 32 | High-ductility deep drawn components, kinetic weights, sports balance |
| Class 2 | 92.5% W (Bal. Ni, Fe) | 17.50 ± 0.15 | Ferromagnetic (< 2.5) | 26 - 34 | Vibration dampening plates, structural aerospace inertia blocks |
| Class 3 | 95% W (Bal. Ni, Fe) | 18.00 ± 0.15 | Ferromagnetic (< 2.5) | 28 - 36 | Oncology radiotherapy multileaf collimators, nuclear isotope packaging |
| Class 4 | 97% W (Bal. Ni, Fe) | 18.50 ± 0.15 | Ferromagnetic (< 2.5) | 30 - 38 | Extreme spatial restriction gamma-shielding, optical sensor collimation |
For electronic, MRI, and high-frequency sensor environments where magnetic interference must be completely avoided, our W-Ni-Cu (Tungsten-Nickel-Copper) sheets exhibit a relative magnetic permeability of strictly less than 1.05 μ, making them ideal for electron beam steering tubes, MRI scan chambers, and magnetic levitation navigation assemblies developed in Japan.
Established in 2001, Zhuzhou Jiuding Metal Technology Co., Ltd is a professional joint venture company which engages in manufacturing, machining and sales of tungsten heavy alloy, tungsten copper, cemented carbide, pure tungsten and other relevant tungsten alloy products. Our products mainly include tungsten heavy alloy, tungsten carbide, tungsten alloy fishing sinker, tungsten darts, tungsten Alloy swaging rod, bucking bar, copper tungsten electrode, tungsten alloy bullets, tungsten alloy syringe, tungsten alloy shielding vial, tungsten alloy boring bar, etc.
Due to its characteristics of high density, high hardness, high melting point, anti-corrosion, radiation protection, non-toxic and environmental-friendly, therefore, our Fragmentation is a natural under the action of detonation products, the shell expansion, fracture broken is made of such warheads is characterized not only as a container shell to form another anti-elements, fragments the size of the shell is uneven, irregular shape in the air fast decay in flight speed, so that the effective anti-personnel grenade limited in scope.
A leading Chinese refractory metal innovator partnering with industrial trading houses and precision equipment makers throughout Japan.
+
Pre-control use of shell fragments groove, groove or increase the lining of explosives and other technical measures to make the shell partial reduction of the intensity to control the explosion of the broken parts to form fragments. Such warheads are characterized by the formation of fragment size of the uniform, shape the ground rules.
Prefabricated fragments forming a pre-processing will be the shape and quality of pre-designed steel ball, steel arrows, tungsten ball, tungsten and other prefabricated column fragments produced prefabricated sets of body fragments, and installed in the grenade projectile outer surface or inner surface. These prefabricated projectile fragmentation grenade explosion with the formation of fragments together constitute the natural fragmentation field, due to resistance of prefabricated fragments flying characteristic consistency, with prefabricated fragments of the grenade will be set within the framework of the lethal effect of a relatively dense, full-bombs a greater degree of lethality increase.
+
Because there is a prefabricated fragments will affect the negative effects of missile body structures, usually only in low-pressure chamber which uses artillery and ammunition, such as the forced large-caliber bullets and grenades. Applications also are the most common aircraft shells, grenades, mines and so on. The current high chamber pressure prefabricated artillery fragments, are used in canister form, such as Switzerland, L70-type 40 mm grenade where overhead is filled with tungsten carbide ball. Prefabricated fragments technology has been widely used on all types of warheads. Cylindrical fragments (Tungsten column) as a type of prefabricated fragments, due to high density, armor-piercing capability, as air defense, anti-radiation, anti-surface, one of the main anti-elements, and widely used.
Tungsten alloy products are widely used in fields of aerospace, medical equipments, military, mechano-electronic, oil exploration, vehicle, sports counterweight, gold-plated jewelry etc. With strong funding, advanced manufacturing technology, strict quality control and technical support from national famous university, our products are popular in country of America, Canada and Japan etc. Besides, we own international advanced technology of Metal Injection Molding (MIM) and pressing technology, we can manufacture standard products and various non-elevation products.
Navigating the Japanese industrial distribution system (Shosha and Tokuyakuten channels) requires unmatched reliability, traceability, and strict documentation. As a verified primary manufacturer, Zhuzhou Jiuding Metal Technology Co., Ltd collaborates directly with Japanese trading companies, stocking distributors, and tier-1 machining facilities located across Chiba, Saitama, Hiroshima, and Fukuoka.
Every shipment of tungsten heavy alloy sheets, plates, and customized blanks bound for Japanese ports (including Yokohama, Tokyo, Kobe, and Osaka) is accompanied by rigorous metallurgical validation:
From thin tungsten shielding foils (0.1mm - 1.0mm) to heavy sintered plates (up to 50mm thickness and 500mm length), our technical support team provides rapid DFM (Design for Manufacturability) analysis within 24 hours.
Contact Our Technical Sales TeamDiscover our full spectrum of sintered, machined, and surface-finished tungsten products trusted by global OEM clients in Japan, North America, and Europe.
