Why is osmium used in pen tips?

Alloy of osmium and iridium improves durability of fountain pens. Osmium alloy is used for fountain pen points, with the alloy called osmiridium when osmium is predominant and iridosmine when iridium is predominant.

Are Osmiroid pens still made?

Osmiroid products were discontinued at the end of 1999.

What is the price of osmium?

$400 per troy ounce
Its atomic number is 76, and its atomic weight is 190.23. As of 2018, it sells for $400 per troy ounce (about 31.1 grams), and that price had held steady for more than two decades, according to Engelhard Industrial Bullion prices.

What is cesium used for?

The most common use for caesium compounds is as a drilling fluid. They are also used to make special optical glass, as a catalyst promoter, in vacuum tubes and in radiation monitoring equipment. One of its most important uses is in the ‘caesium clock’ (atomic clock).

Are Osmiroid pens good?

Much less subject to deterioration (though it can happen) these self-coloured pens are excellent piston fillers, many still working today without any servicing. Together with a collection of nibs to suit your hand, the 75 remains one of the best calligraphy pens around. Later, a different Osmiroid system was developed.

What is the cost of 1 kg osmium?

Osmium at Rs 1/kilogram | Hyderabad| ID: 10763249830.

Is cesium more valuable than gold?

Per gram, cesium is more expensive than gold, and when it solidifies, it forms delicate crystal structures that even look like gold.

How much is cesium worth?

In 2019, one company offered 1-gram ampoules of 99.8% (metal basis) cesium for $63.00, a slight increase from $61.80 in 2018, and 99.98% (metal basis) cesium for $81.10, a 3% increase from $78.70 in 2018.

Where are Osmiroid pens made?

The humble Osmiroid has a much longer ancestry than most fountain pens. It was made by EH Perry in the factory at Gosport.

What is an osmiridium alloy?

Osmiridium is a popular name for a naturally occurring alloy of the metals iridium and osmium. Corrosion-resistant, it is used in the manufacture of a variety of articles from pen nibs to munitions.

How long was osmiridium mined for?

Production of osmiridium continued until 1954, by which time more than 881 kg had been mined.

Who discovered osmiridium in Tasmania?

The man credited with developing the mining of osmiridium in Tasmania is James McGinty, of McGinty Nugget fame. Thirty years earlier, during the time he spent digging for gold in the Corinna goldfields, he had found the largest gold nugget ever discovered in Tasmania.

What was the density of osmiridium during the Gold Rush?

At this time the gold miners were finding a white, hard metal that washed with their gold, and was very difficult to separate in their panning dish: the density of osmiridium is 22 g/cm3, compared to 19 for gold.