Copper prices ended the month by increasing to an 11-week high on the back of greater optimism for the global economy and decreasing inventories.
This marked an eleventh consecutive month that inventories declined.
According to data prepared by Bloomberg, copper inventories have been halved since the start of the year and may be at their lowest since 2008, suggesting prices may have further to climb.
Since bottoming out in March of this year at prices under US$ 6700 per metric tonne, cash copper contracts on the LME will close this month at nearly US$ 7000 per metric tonne. Read More...
Terfenol-D is a magnetostrictive alloy that was developed in the 1970s by the US Naval Ordnance Laboratory.
Magnetostrictive materials will change shape (elongate or shrink) when placed in a magnetic field. And this special property has allowed Terfenol-D to be used in various applications, including naval sonar system, sensors, actuators, as well as acoustic and ultrasonic transducers.
Terfenol-D is technically a solid-state transducer, meaning that it can convert high energy levels from one form to another. Magnetostrictive alloys, for example, can convert electrical energy to mechanical energy.
The alloy has a high Curie temperature (380°C) and is able to generate strains 100 times greater than traditional magnetostrictive materials and two to five times greater than piezoceramics. Read More...
First conducted in 1919, the London gold fix - the internationally accepted process for determining gold prices - has changed very little over the course of nearly a century.
Five member banks negotiate, or 'fix', prices twice each weekday via secure phone line. No transcripts of the conversation, prices or volumes are recorded, and no outsiders are allowed to be party to the discussion.
The prices fixed just after 10:30am and 3:00pm (London time) each day then disseminates to miners, refiners, investors, futures and derivatives markets, jewelers, traders and the countless others who follow and speculate on gold prices.
While most benchmark market pricing mechanisms are now determined electronically, the London gold fix remains a staunchly traditional.
By reducing drag and weight, jet makers can create significant fuel-cost savings, which is why titanium's combination of strength and light weight has made the metal a critical component of the modern aerospace industry.
The use of titanium and titanium alloys in aircraft has more than tripled since the 1960s. By bodyweight, titanium now comprises about 15% of modern Boeing commercial airliners.
Now, three French inventors have developed a lighter passenger seat made of titanium and composite materials, which they are marketing to jet makers and airlines. Read More...
Silver bullion salvaged off the coast of Ireland will be cast into coins at the British Royal Mint 70 years after being sent to the sea floor by a German U-boat.
The SS Gairsoppa was carrying 2800 bars of the metal, along with tea and pig iron from India, when it was attacked and sunk on February 17, 1941. Only one sailor survived.
The ship rested on the sea floor 300 miles off the Irish coast until its discovery in 2011 by the US marine exploration company Odyssey. The deepest maritime rescue operation in history went 3 miles under the ocean surface to bring the silver bullion back to dry land. Read More...
The mineral wealth possessed by the Democratic Republic of Congo, while undeniably attractive to foreign investors, has been a taboo topic for many years.
Congolese minerals, particularly tantalum, tin, gold, copper, cobalt and tungsten, have drawn the ire of international organizations who link the mining and sale of these ores to corruption, warlords and conflict that has afflicted the country for years.
As a result of these concerns, US Congress enacted legislation in 2010 requiring all publicly listed companies that make use of coltan (a source of tantalum), cassiterite (tin), wolframite (tungsten) and gold to report whether any of the metals that they purchase and use may have supported conflict in the central African region.
While it took a number of years to clarify the requirements that befell thousands of manufacturers and the role of the Securities and Exchange Commission in monitoring the regulations, the first disclosures are expected on May 31st of this year. Read More...
One could be forgiven if they thought production and consumption were still the determining factors in copper prices.
No longer is this the case.
The market for copper, which includes spot trading, futures contracts and exchange traded funds, is now so interwoven with financial dealings disconnected with the physical market that investors and money markets now drive prices as much as consumption.
The past two weeks have shown the importance and impact that financial dealings can have on prices for the red metal.
China's attempt to tighten liquidity have sent copper markets reeling. Cash starved companies, which had been dependent on bank loans and other lending arrangements for financing, have been selling off copper to raise funds.
Many - if not most - of these companies are not metals dealer, traders or consumers. They are financiers and traders who have purchased copper as an asset to take US dollar loans against, which banks made available at a lower rate than their renminbi (RMB) equivalents. Read More...
Russia is the world's largest producer of palladium, which is used to produce autocatalysts and multi-layer ceramic capacitors, as well as jewellery and dental alloys.
Norilsk Nickel, the world's largest nickel producer, extracts palladium as a by-product from it's nickel mines in Russia as well as from mines in Botswana and South Africa. The company accounts for about 40 percent of primary refined palladium production.
Prior to Russia's move into the Crimean peninsula, the market for PGMs had already been moving higher due to an ongoing strike in South Africa that has seriously impacted output from the world's second largest source of palladium.
When Hannibal's army arrived in Gaul in 217 BCE it wasn't just the 90,000 troops and 3 dozen war elephants that invoked terror in his opponents: the Romans already had knowledge of Carthaginian swords.
Cast from Toledo steel, the Carthaginian short swords - or falcatas - were stronger and more durable than any weapons the Romans possessed.
In the spring of the same year, Hannibal ambushed the Roman army on the shore of Lake Trasimenus, destroying the Roman army. A year later, the Romans raised another army - numbering as many as 100,000 - to strike Hannibal at Cannae. But, again, it was the Romans that suffered. An estimated two-thirds were killed or captured.
While strategy was critical, the advantage provided by Toledo steel swords was undeniable. Two layers of metal - a softer ferritic steel enveloped by a lower carbon pre-modern steel - produced stronger but comparably elastic blades.
In the following decades and centuries, Roman legions throughout Europe would adopt weaponry made from Toledo steel. Read More...
Ten athletes at the winter Olympic Games in Sochi will have an opportunity to take home more than just a gold, silver or bronze medal.
The government of Chelyabinsk, which was hit with a meoteorite last February 15th, will commemorate the one-year anniversary of the meteor strike by awarding medals studded with a piece of the space rock to the athletes who win gold medals on that day.
The medals have been made with gold and silver, and inset with a piece of the meteorite, which was mainly composed of iron, magnesium-containing silicate and sulfites. They were carved by specialists in the town of Zlatoust.
In total, 50 medals have been made. Ten will be awarded to athletes, while some 40 others will be sold to private collectors. Read More...