The Rembar Refractory Metal Blog

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Rembar Co., LLC, founded in 1950, is celebrating its 75th anniversary as a leading supplier and fabricator of refractory metals. Over the decades, Rembar has significantly influenced the refractory metals industry through its extensive inventory, rapid prototyping capabilities, and specialized fabrication services. Key Contributions to the Refractory Metals Industry 1. Extensive Inventory and Rapid Delivery […]

Tungsten metal can be bent and formed, but it presents significant challenges due to its physical properties. Tungsten is known for its extremely high melting point (about 3,422°C or 6,192°F) and exceptional hardness, which makes it difficult to work with at room temperature. Best results are achieved by bending across the grain as pure tungsten […]

Precision machining of pure tungsten is challenging due to its unique physical properties. Tungsten has a very high melting point (around 3,422°C or 6,192°F), excellent hardness, and brittleness at room temperature, which make it difficult to machine using conventional methods. Produced via the powder metallurgy process, pure tungsten metal exhibits stratified layers and grain directions […]

Design for Manufacturing (DFM), also known as Design for manufacturability, is a crucial aspect of product development that focuses on optimizing the design of a product for efficient and cost-effective manufacturing.

When purchasing refractory metals, it is essential to know their weight to ensure that you get precisely what you need.

Rembar is the perfect solution for urgently needed refractory metal vacuum furnace products.

What do NASA, Boeing, Lockheed Martin, SpaceX, Blue Origin, JPL, AMAZON/Project Kuiper, Howmet Aerospace & GE Aviation have in common? Answer: All of these aerospace companies are customers of Rembar. Since its founding in 1950, Rembar has built a solid reputation as a reputable, reliable, responsive & trustworthy partner to the aerospace industry. Whether they […]

About Rhenium Classified as a refractory metal due to its extremely high melting point of 3180º C, rhenium’s melting point is exceeded only by tungsten. And it is a very dense metal, having a density of 21.04 g/cc which is exceeded only by iridium, osmium and platinum. Unique among refractory metals, rhenium does not have […]

Tantalum Properties Tantalum (pronounced tan-ta-lum) is number 73 on the periodic table. Rarely occurring in nature, tantalum is typically found in the ore columbite-tantalite. When refined, pure tantalum metal is a lustrous blue-gray color, similar in color to platinum. Pure Tantalum: Tantalum has one of the highest melting and boiling points of all the chemical […]

Why Does The United States Have Export Controls? Certain destinations, organizations and individuals are subject to trade sanctions, embargoes and restrictions under U.S. law. The United States has export controls in place to protect national security interests and to promote its foreign policy objectives. The U.S. also participates in various multilateral export control regimes to […]

Niobium (Atomic number 41), is a greyish-silvery metal. It is a transition metal found in group 5 & period 5 on the periodic table. A fairly dense & ductile element, Niobium is similar to tantalum and found just above it on the periodic table. In fact, both niobium and tantalum are found together in the […]

Pure molybdenum, with its very high melting point, good strength, low coefficient of thermal expansion & excellent thermal conductivity, is a good all-around candidate for most high temperature applications. TZM, an acronym for the molybdenum alloy “titanium-zirconium-molybdenum”, is a molybdenum alloy containing 0.5% titanium, 0.08% zirconium, 0.02% carbon and the balance molybdenum. TZM, like pure […]

Pure Tungsten / Tungsten Nickel Iron Alloys / Tungsten Nickel Copper Alloys – Choosing the Right One for the Job – Pure Tungsten (ASTM B760, ASTM F288) Tungsten is an element on the Periodic Table with an atomic number of 74. This gray, steel-like metal has the highest melting and boiling points (3422 °C & […]

Rembar has been a trusted supplier of refractory metal products to Public & Private Research Universities for over 70 years. The research and development of new products and processes is key to the continuing advancement of mankind. Imagine how our lives today would look without the technological advancements made in the 20th century! While major […]

Having been deemed an essential, critical business under New York State executive order 202.6, The Rembar Company remains open for business. For the 70 years we’ve been in business, our dedicated employees have always been our greatest asset. From the outset of the virus, we have taken important steps to insure their health and safety. […]

Niobium, Tantalum & Tungsten Jewelry Whereas contemporary jewelry is typically fashioned from precious metals like gold, silver & platinum, some refractory metals are gaining popularity with jewelry wearers thanks to the rarity, uniqueness and durability of refractory metal jewelry. Niobium Niobium is perhaps the most widely-used refractory metal in jewelry-making. It is a rare metal […]

Distributors play a critical role in the supply of refractory metals to the marketplace. Generally, producer mills do not like to carry much inventory. Reputable, well-run distributors, on the other hand, purchase large quantities of refractory metals on speculation and stock it for their customers that need product quickly and at a fair price. In […]

Molybdenum touches our lives every day, but in ways that are both visible and invisible to the end user. This element is vitally important to nearly every phase of our economy, and even to our personal health. It works behind the scenes to enable technologies that have revolutionized the world. A silvery metal, molybdenum is […]

Global Tantalum Production, Conflict Minerals and The U. S. Dodd-Frank Act – What You Should Know According to The U.S. Geological Survey, Mineral Commodity Summaries, Significant U.S. tantalum mine production has not been reported since 1959. Domestic tantalum resources are of low grade, some are mineralogically complex, and most are not commercially recoverable. Companies in […]

Domestic & Imported Metals Available Over the years, Rembar has developed an international network of partner mills and other 1st tier sources for refractory metals. Our network of producer mills & master import/export companies helps to insure an uninterrupted supply of refractory metals to our customers. In addition, Rembar manages the fluctuating refractory metals marketplace […]

Where is Molybdenum Metal Used?Molybdenum touches our lives every day, but in ways that are both visible and invisible to the end user. A silvery metal, Molybdenum is in the top ten of metals with highest melting points. It also retains strength and stability at very high temperatures, up to 1900 degrees Celsius. There are […]

DFARS stands for Defense Federal Acquisition Regulation Supplement. It is a set of restrictions for the origination of raw materials intended to protect the US defense industry from the vulnerabilities of being overly dependent on foreign sources of supply. For those of you with government or defense-related contracts, compliance with DFARS is crucial. In our industry, […]

Welcome to the Rembar Blog! Here, we’ll post informative and interesting news concerning refractory metals and monitor trends in the industry. Refractory metals, such as the products that Rembar sells each and every day, are well known for their resistance to heat. Most of them have melting points in excess of 3632 F (2000 C) […]