Rhenium Bar

AEM METAL's Rhenium Bars: Precision and Purity for Cutting-Edge Industries

At AEM METAL, we deliver rhenium bars with unparalleled precision and purity. Our advanced manufacturing process ensures each bar meets exacting standards, making them ideal for high-tech applications in aerospace, electronics, and medical fields.

Our commitment to quality is reflected in rigorous testing and inspection, ensuring every rhenium bar provides exceptional reliability and performance. Choose AEM METAL for superior products that exceed industry expectations.

Rhenium Bar Specifications

Specifications	4N Grade Re>99.99%(calculated by subtraction method, except gas element)
Specifications	5N Grade Re>99.999%(calculated by subtraction method, except gas element)
Appearance	Grey or silver metallic square bar or round bar
Sizes	Square bar (12~16) (12~16) (150~500) mm
Sizes	Round bar D(10~20) *L (50~300) mm. Can be customized as per requirement

Chemical Composition of Rhenium Bar

Main content: Re 99.95% min (excluding gas elements)
Maximum trace metallic impurities, analysed by ICP-MS

Trace Impurities (%, max)
Element	4N Grade	5N Grade	Element	4N Grade	5N Grade
Na	0.0010	0.0001	Ni	0.0001	0.00001
Mg	0.0001	0.00001	Cu	0.0001	0.00001
Al	0.0001	0.00001	Zn	0.0001	0.00001
Si	0.0005	0.00005	As	0.0001	0.00001
P	0.0001	0.00005	Zr	0.0001	0.00001
K	0.0010	0.0001	Mo	0.0010	0.0002
Ca	0.0005	0.00005	Cd	0.0001	0.00001
Ti	0.0001	0.00001	Sn	0.0001	0.00001
V	0.0001	0.00001	Sb	0.0001	0.00001
Cr	0.0001	0.00001	Ta	0.0001	0.00001
Mn	0.0001	0.00001	W	0.0010	0.0002
Fe	0.0005	0.00005	Pb	0.0001	0.00001
Co	0.0001	0.00001	Bi	0.0001	0.00001
Se	0.0001	0.00001	Tl	0.0001	0.00001
Gas Element for Medium Density(%, max)
O	0.03	0.03	C	0.005	0.002
N	0.003	0.003	H	0.002	0.002
Gas Element for High Density(%, max)
O	0.003	0.003	C	0.005	0.002
N	0.003	0.003	H	0.002	0.002

Why Choose AEM METAL-Key Benefits of Our Rhenium Bar

Exceptional Purity

Our rhenium bars are crafted from the highest purity materials, ensuring optimal performance in critical applications.

Precision Manufacturing

We utilize advanced manufacturing techniques to produce rhenium bars with tight tolerances, ensuring consistent quality and reliability.

High-Temperature Stability

AEM METAL's rhenium bars are designed to withstand extreme temperatures, making them ideal for high-performance environments.

Corrosion Resistance

Our rhenium bars offer excellent resistance to corrosion, extending their lifespan even in harsh conditions.

Customization Options

We provide tailored solutions to meet your specific requirements, offering a range of sizes and specifications to suit diverse applications.

How to Manufacture Rhenium Bar

Material Preparation

Powder Compaction

Sintering

Hot Working

Precision Machining

Material Preparation

Raw Material Sourcing:
The process begins with obtaining high-purity ammonium perrhenate (APR), the primary source material for producing rhenium. The quality of the raw material is crucial, as it directly impacts the purity of the final product.
Reduction Process:
APR is reduced in a hydrogen atmosphere at high temperatures (approximately 600–700°C) to produce rhenium powder. This reduction process is essential for transforming the raw material into a powder suitable for further processing.

Powder Compaction

Pressing:
The rhenium powder is compacted into a green (unfired) bar shape using a hydraulic or mechanical press. The pressure applied during this step must be uniform to ensure consistent density and structure throughout the bar.
Cold Isostatic Pressing (CIP):
For enhanced uniformity, the green bars may undergo cold isostatic pressing. This process involves placing the compacted bars into a sealed container and applying pressure from all directions, which helps eliminate any inconsistencies in the material's density.

Sintering

High-Temperature Sintering:
The compacted green bars are subjected to sintering at extremely high temperatures, typically between 1,500 and 2,000°C, in a controlled atmosphere. Sintering causes the powder particles to bond, significantly increasing the bar's density, strength, and reducing its porosity.
Vacuum or Hydrogen Atmosphere:
Sintering is carried out in a vacuum or hydrogen atmosphere to prevent oxidation and maintain the high purity of the rhenium bars.

Hot Working

Hot Rolling or Forging:
After sintering, the rhenium bars are hot-worked through rolling or forging processes. These methods further refine the microstructure, enhancing mechanical properties such as strength, ductility, and toughness. For bars, this process focuses on achieving the desired thickness and uniformity.
Annealing:
The hot-worked bars are annealed, which involves heating them to a specific temperature and then slowly cooling them down. This step relieves internal stresses induced during the hot working process, improving the bar's ductility and making it easier to machine.

Precision Machining

Milling and Turning:
The sintered and hot-worked bars undergo precision machining to achieve the final dimensions. This involves milling and turning operations to cut the bars to the desired thickness, width, and length, ensuring they meet exact specifications.
Surface Finishing:
The bars are then subjected to surface finishing processes such as grinding and polishing to ensure a smooth surface and tight dimensional tolerances. This is especially important for applications that require high surface quality.

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Commitment to Quality Assurance

Material Purity Analysis

X-Ray Fluorescence (XRF): This non-destructive technique is used to analyze the elemental composition of the rhenium bar, ensuring it meets the desired purity levels.

Inductively Coupled Plasma Mass Spectrometry (ICP-MS): This method detects trace impurities in the rhenium material, providing a precise measurement of its purity.

Dimensional and Surface Inspection

Microscopy: High-resolution optical or electron microscopes are used to inspect the surface for defects like cracks, voids, or inclusions that could affect the bar's performance.

Coordinate Measuring Machine (CMM): CMMs are employed to ensure that the bar dimensions adhere to strict tolerances, verifying the precision of its manufacturing.

Mechanical Testing

Tensile Testing: This test measures the strength of the rhenium bar by applying tension until it breaks, providing data on its tensile strength and elongation properties.

Hardness Testing: Methods like the Vickers or Rockwell hardness tests are used to determine the material's hardness, ensuring it meets the required mechanical specifications.

Thermal and Electrical Testing

Thermal Conductivity Test: This test measures the bar's ability to conduct heat, which is crucial for applications in high-temperature environments.

Electrical Resistivity Test: This test evaluates the electrical resistance of the rhenium bar, ensuring it meets the necessary conductivity requirements for its intended use.

Non-Destructive Testing (NDT)

Ultrasonic Testing: Ultrasonic waves are used to detect internal defects like voids or cracks without damaging the bar.

Eddy Current Testing: This method identifies surface and sub-surface flaws by inducing an electric current in the bar and measuring the resulting magnetic field.

Versatile Applications of Rhenium Bar

Vacuum Equipment Manufacturing

Rhenium bars are widely employed in the production of vacuum equipment due to their superior corrosion resistance. They are critical in the fabrication of components like vacuum tubes, furnaces, and other devices that operate under low-pressure environments, ensuring durability and reliability.

Semiconductor Manufacturing

In semiconductor production, Rhenium bars are indispensable for crafting electrodes and connectors in electronic components. Their high electrical conductivity and thermal stability make them ideal for applications that demand precision and consistent performance.

Medical Devices

Rhenium bars play a crucial role in the manufacturing of medical devices, particularly those that require biocompatibility and reliability. Their unique properties ensure that medical instruments and implants maintain their performance in demanding conditions, contributing to advancements in healthcare technology.

Aerospace

In the aerospace industry, Rhenium bars are employed in the construction of jet engine components such as turbine blades and combustion chambers. Their ability to withstand extremely high temperatures and mechanical stresses makes them essential for maintaining the efficiency and safety of modern aircraft.

X-ray Technology

Rhenium bars are utilized as anode materials in X-ray tubes, both for medical imaging and industrial radiography. Their contribution to X-ray technology enhances the precision and effectiveness of diagnostic tools, enabling clearer imaging and more accurate diagnostics.

Catalysis

Rhenium bars act as catalysts in various chemical reactions, particularly in the petrochemical industry. They facilitate processes such as hydrogenation and reforming, playing a critical role in the production of fuels and chemicals, thereby supporting the energy and manufacturing sectors.

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Exceptional Product Features Compared to Competitors

High-Temperature Stability

Rhenium Bar: Rhenium bars offer remarkable stability at extremely high temperatures, maintaining their structural integrity even in environments exceeding 3000°C. This makes them indispensable in applications like aerospace, nuclear reactors, and high-performance engines.
Compared to Tungsten and Molybdenum: While tungsten and molybdenum also exhibit high-temperature resistance, they cannot match rhenium's ability to maintain ductility at these extreme temperatures. Tungsten is more brittle, and molybdenum has a lower melting point.

Corrosion Resistance

Rhenium Bar: Rhenium bars provide outstanding resistance to corrosion, especially in harsh environments such as those with exposure to acids and other corrosive substances. This ensures a longer lifespan and reduced maintenance in critical applications.
Compared to Nickel Alloys and Stainless Steel: While nickel alloys and stainless steel offer good corrosion resistance, rhenium's superior chemical stability provides better protection against aggressive chemicals and extreme conditions.

Electrical Conductivity

Rhenium Bar: Rhenium bars possess excellent electrical conductivity, making them ideal for use in electronic components and electrical contacts where consistent performance is critical.
Compared to Copper and Silver: Although copper and silver are known for their high conductivity, rhenium bars offer the added benefit of maintaining conductivity at high temperatures, where copper and silver would typically degrade.

Ductility at High Temperatures

Rhenium Bar: Rhenium maintains excellent ductility even at temperatures where other materials would become brittle. This makes it a preferred choice in applications requiring both high strength and flexibility under thermal stress.
Compared to Tungsten and Tantalum: Tungsten, while strong, becomes brittle at high temperatures, and tantalum, though ductile, lacks the extreme temperature resilience of rhenium.

Thermal Shock Resistance

Rhenium Bar: Rhenium bars are highly resistant to thermal shock, allowing them to withstand rapid temperature changes without cracking or losing performance. This is crucial in environments with fluctuating thermal conditions.
Compared to Zirconium and Graphite: Zirconium offers good thermal shock resistance but can corrode easily, and graphite, while resistant to thermal shock, lacks the strength and ductility of rhenium in high-temperature applications.

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Frequently Asked Questions About Rhenium Bar

Can rhenium bars be customized to specific dimensions?

Yes, rhenium bars can be manufactured to custom specifications, including specific diameters, lengths, and tolerances. Customization is often available to meet the unique requirements of different industries and applications.
Can rhenium bars be alloyed with other metals?

Yes, rhenium can be alloyed with other metals, such as tungsten or molybdenum, to enhance certain properties. Rhenium alloys are often used in aerospace and electronics for improved strength, thermal stability, and corrosion resistance.
Are rhenium bars recyclable?

Yes, rhenium bars are recyclable. Due to the high value of rhenium, it is often recovered and recycled from used components. Recycling rhenium helps reduce costs and conserve this rare and valuable metal.
How do rhenium bars perform under high stress and pressure?

Rhenium bars perform exceptionally well under high stress and pressure due to their high tensile strength and ductility. They maintain their structural integrity in extreme environments, making them suitable for critical applications like deep-sea exploration and high-performance engineering.
How should rhenium bars be stored and handled?

Rhenium bars should be stored in a dry, clean environment to prevent contamination. Although rhenium is highly resistant to oxidation, proper handling procedures should be followed to avoid any damage to the bars, especially during transportation and storage.
What are the safety considerations when working with rhenium bars?

Rhenium itself is not toxic, but safety precautions should be taken when machining or handling the material to avoid exposure to fine particles or dust. Proper ventilation, protective equipment, and adherence to safety guidelines are recommended.
What are the challenges in machining rhenium bars?

Machining rhenium bars is challenging due to the metal's hardness and high density. Specialized tools, often diamond-tipped, are required, and the process must be carefully controlled to prevent tool wear and achieve precise tolerances.
What kind of support or technical assistance is available for customers?

We provide comprehensive technical support, including assistance with material selection, customization guidance, and post-purchase support to ensure customers achieve optimal results with our rhenium products.
What shipping methods do you use to deliver products?

We typically opt for UPS, DHL, or FedEx. However, for shipments over 100 kg, sea transportation is an option. Feel free to specify your preferred shipping method.
How long does it usually take for goods to be delivered?

Delivery typically takes 3-4 weeks, subject to the product's complexity, quantity, and order volume. Please also understand that if transportation volume accumulates during holidays, the delivery time may be slower.

Request a Customized Rhenium Quote Now

No matter what kind of rhenium product you require, our vast experience enables us to manufacture it.

Get a quote now or let us know what you're looking for and we will get back to you soon!

AEM METAL's Rhenium Bars: Precision and Purity for Cutting-Edge Industries

Rhenium Bar Specifications

Chemical Composition of Rhenium Bar

Why Choose AEM METAL-Key Benefits of Our Rhenium Bar

Exceptional Purity

Precision Manufacturing

High-Temperature Stability

Corrosion Resistance

Customization Options

How to Manufacture Rhenium Bar

Material Preparation

Powder Compaction

Sintering

Hot Working

Precision Machining

Commitment to Quality Assurance

Material Purity Analysis

Dimensional and Surface Inspection

Mechanical Testing

Thermal and Electrical Testing

Non-Destructive Testing (NDT)

Versatile Applications of Rhenium Bar

Vacuum Equipment Manufacturing

Semiconductor Manufacturing

Medical Devices

Aerospace

X-ray Technology

Catalysis

Exceptional Product Features Compared to Competitors

High-Temperature Stability

Corrosion Resistance

Electrical Conductivity

Ductility at High Temperatures

Thermal Shock Resistance

Frequently Asked Questions About Rhenium Bar

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