BJAT Advanced Materials Technology Group was established in 1995, which is high-tech enterprise approved by Ministry of Science and Technology and Chinese Academy of Sciences. The company was successfully listed on the Hong Kong Stock Exchange in 1998.
With its expertise in metallic materials and services for emerging industries of strategic importance, BJAT provides global high-end customers with advanced metallic materials, products and solutions covering Advanced Functional Materials and Products,Special Powder Metallurgical Materials and Products, High Quality Special Steel and Welding Materials,Environmental Protection and High-end Technology Services…
Products
Refractory Metals Parts & Components
Tungsten and Molybdenum Products
Tungsten has the characteristics of high melting point, high strength and hardness, good performance at high temperature, low resistivity, small expansion coefficient, and small electronic work function; therefore it is the metal material which is most widely used in high-temperature conditions.
Molybdenum has good thermal conductivity, electrical conductivity and low expansion coefficient (which is similar to glass for electronic tubes), and high strength at high temperature (1100~1650℃); compared to tungsten, it’s easy to be processed, thus be widely applied in manufacturing of electronic tubes (grid and anode), and electric light source (support materials), and metal processing tools (die-cast and extrusion mold and perforation heads), and applied in the aerospace industry.
Tungsten copper composite assembly for partial filter of nuclear fusion device: International Thermonuclear Experimental Reactor(ITER) is a superconducting tokamak that enables large-scale nuclear fusion reactions. The plasma torus is in the ring-shape sheath of the shield blanket. The shield blanket will absorb 500,000 kilowatts of thermal power and all neutrons generated by the nuclear fusion reaction.
Plasma-facing material is one of the most critical materials in the fusion reactor. The main requirements of the material are with low sputtering rate, high thermal shock resistance, high heat load capacity, low tritium retention, low activity radioactive and low decay heat. Tungstencopper composite parts, TZM materials produced by BJAT can be used as the first-wall materials.
Tungsten Heavy Alloys
Tungsten heavy alloys(the density is up to 18.5g/cm3) are made of tungsten based with two phase composites of Ni, Fe or Cu as additions to form a ductile matrix. Tungsten heavy alloys have good machining properties, excellent radiation resistance, lower expansion coefficient, high strength and modulus of elasticity which make it extensively used in balance weights for submarine and vehicles, aircraft components, nuclear and medical shields, fishing and sport tackles etc.
BJAT can produce various big-size tungsten heavy alloy parts by CIP, various small parts by mold pressing, extruding or MIM, various high-strength plates, bars and shafts by forging, rolling or hot extruding.
W-Cu Alloys
BJAT is the Chinese leading invention unit of tungsten-copper material and the drafting unit of tungsten-copper industry standard. Our company has been developing and producing tungsten-copper since the 1960s, and has developed several brands of tungsten and copper material system. We have many experience in R&D and production, and our product quality and technology keep high level. It has passed ISO9001, 14001 and OHSAS18001 system certification, can provide you with qualified products.
Mo-Cu Alloys
BJAT is the Chinese leading invention unit of molybdenum-copper material and the drafting unit of tungsten-copper industry standard. Our company has been developing and producing molybdenum-copper since the 1960s, and has developed several supporting materials of molybdenum-copper material system. We have rich experience in R&D and production, and our product quality and technology keep leading level.
It has passed ISO9001, 14001 and OHSAS18001 system certification, can provide you with qualified products.
Tungsten, Molybdenum, Rhenium and Related Alloys
BJAT is dedicated in supplying world-class W/Mo/Re materials and its finished parts. We use special rolling or forging technology, process our high quality W/Mo/Re powder into slab, rod, wire with excellent performance. These kinds of material has good process-ability and low impurity content, which can have a better performance during its service cycle.
Rare Earth Permanent Magnets
Sintered NdFeB Magnets and Assemblies
Bonded NdFeB Magnets and Assemblies
Special Alloys
Master Superalloys
Master superalloys are mainly used to manufacture heat-resistant parts for aircraft engines, gas turbines and automotive turbochargers. It can withstand high temperature, oxidizing atmosphere, gas corrosion and heavy stress for a long time, which benefits from excellent thermal stability, creep strength, long-term micro-structural stability, etc.
Our products are mainly divided three kinds of the master alloys for Equiaxed, Directional and Single Crystal Grain. The diameter of bar ranges from 40 to 175mm, and the length from 800 to 1200mm. Based on our ability of technology and development, experience of trial production and capacity of mass production, the satisfactory customized services could be provided.
Precision Alloys
Precision alloys are metal materials with special physical properties (such as magnetism, electricity, expansion, resistivity, etc.). Precision alloys play an indispensable role and can be used in industry such as electronic and electrical, consumer electronics, precision instruments, communication, sealing, sensor, aviation, energy power and others.
Typical products include soft magnetic alloys (1J21, 1J22, 1J27, 1J50, 1J79, 1J85), half-soft magnetic alloys (2J4, 2J85), elastic alloys (3J21, 3J33, 3J53), expansion alloys (4J29, 4J36, 4J42, 4J50), electric-resistance alloys (6J22, 6J23) etc.
The product form include strip, plate, bar, wire, ring, etc. The minimum thickness of strip is 0.005mm, the maximum width is 450mm, and the tolerance can reach ±0.5μm.
Special Alloy Strip
The special alloy strips include corrosion-resistant alloys, clad-welding alloys, wrought superalloys, titanium alloys etc.. The fields of application comprise engines and hot-end components of IGT, energy and chemical, rail transit, etc.
Typical products include:
Inconel 600, Inconel 605, Inconel 625, Inconel 718, Hastelloy C-276; EQ309L, EQ347L; TA1, TA4, TC4, etc.
The minimum thickness of strip is 0.03mm, the maximum width is 450mm, and tolerance can reach ±1.5μm. Various sizes can be customized according to application needs.
Precision Strip for Electronics
Precision Strips for Electronics mainly refers to stainless steel strip, which apply as various component or parts in consumer electronics, such as SUS304, SUS301, SUS316L. Special physical properties are usually required for these strips, including mechanical properties, thickness tolerance, flatness, finish , roughness, cleanliness, bending, etc. Typical applications: touch switch, backlight plate, connector, power battery plate, etc.
The minimum thickness of strip is 0.03mm, the maximum width is 450mm, and the tolerance limit can reach ±1.5μm. Various sizes can be customized according to customers’ needs.
Amorphous Alloys/Nanocrystalline Materials
Amorphous Ribbons and Components
Amorphous alloy is a new type of energy saving material produced by rapid solidification technology, being cooled from molten alloy at a rate of nearly million degrees per second. It has high permeability and low core loss because of the unique long-range disordered atomic structure, which is completely different from that of crystals. Amorphous alloy is widely used in the fields of distribution transformers, inductors, motor stators and sensors, taking the advantage of significantly improving device efficiency and reducing energy consumption.
Nanocrystalline Ribbons
Nanocrystalline Ribbons is an iron-based soft magnetic alloy materials with nanocrystalline structures (grain size ~10nm). With excellent soft-magnetic properties such as high saturation flux density (Bs), high permeability, and low core loss, it is widely used in electrical power, industrial power supply, renewable energy, railway & transportation, consumer electronics, wireless charging, etc.
Nanocrystalline Ribbons products are available as high precision iron-based nanocrystalline ribbon in thickness from 14 μm to 26 μm and widths from 2 mm to 80 mm, which can be made into various magnetic components including cores, devices, shielding sheets, etc. They can meet the performances of high frequency and low core loss simultaneously, and facilitate the development of electronic equipment towards the trend of high frequency, miniaturization, and lightweight.
Nanocrystalline Cores
Nanocrystalline cores can be classified as Common Mode Choke Cores (CMC), High Frequency Power Transformer Cores (HFPT) and Current Transformer Cores (CT) based on different uses and performances.
According to the magnetic properties of cores, selecting suitable compositions, the nanocrystalline ribbon is wound into cores of various shapes and sizes, such as toroidal, rectangular, C-shape or E-shape, etc. After specific heat treatment process, cores with required magnetic properties will be produced and encapsulated in accordance with customers’ requirements.
Nanocrystalline Components
Dedicated to developing ultra-thin ribbons with various magnetic properties, BJAT promotes the development of electronic equipment towards the direction of high frequency and miniaturization.
The common mode chokes (CMC) based on ultra-thin ribbon offer high impedance in compact designs for a wide range of EMI requirements.
The high frequency power transformer (HFPT) use the core which has high saturation flux density, low core loss and near-zero magnetostriction. Those products allow reduction in size and weight, and low energy loss for your applications.
The EMI filter can provide one-stop EMC services in terms of EMC test, design, on-site improvement and system solutions, etc.
Magnetic Shielding Sheets
BJAT`s magnetic shielding sheets are classified as amorphous shielding sheets and nanocrystalline shielding sheets according to different kinds of soft magnetic materials. The magnetic shielding sheets made of single-layer or multi-layer high-quality amorphous or nanocrystalline ribbon offer high permeability and low core losses. It can effectively reduce the EMI of magnetic field to the surroundings. It is widely used in aerospace, automotive, communications and other electronic equipment as EMI resistance, electromagnetic screen and wireless charging.
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Diamond Tools
Atomized Alloy Powders
Metal Injection Molding Parts
HIP Products
Tool and Die Steels
Welding Materials
Environmental Protection Engineering
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Applications
Automobile
Electronics
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Energy
Environmental Protection
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Aerospace&Ship
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