There are many kinds and models of pens. According to the composition of the pen tip, it can be divided into gold pen, iridium pen and ink bag pen.

fountain pen

The nib is made of gold alloy. The nib is soft, elastic and comfortable. But the price of gold pen is expensive, the nib is soft, and it is difficult to master, so it is not suitable for beginners.

Iridium point pen

The nib does not contain gold. Some nibs are gold-plated. The nib is hard, but it is good and cheap. It is a more suitable tool for beginners to write.

The reason why gold pen tip and iridium pen tip are more durable than pen tip lies in the small round particles on the pen tip. This small round grain is made of iridium ruthenium alloy. It is very hard and wear-resistant. According to the experiment of Shanghai Jinxing gold pen factory, if the gold pen tip and the pen tip are polished on the oilstone at the same time, the gold pen tip will only wear 0.07mm after an hour, while the pen tip will wear as much as 5mm!

Although the prices vary widely, the iridium particles on the nib are made of the special alloy "iridium, ruthenium"! The reason why the smoothness is so different is that the grinding method and fineness are different. So in a sense, gold pen and iridium pen are the same. But the production materials and feel are different, which leads to the price gap!

The ink contains a small amount of sulfuric acid, but this corrosive sulfuric acid will pose a serious threat to the pen. If the pen tip is made of ordinary steel, it will not withstand the corrosion of sulfuric acid and will not last long. What metal can resist corrosion? Gold, iridium and stainless steel. Gold is a corrosion-resistant metal. People think of using it to make pen tips. However, pure gold is too soft to be directly used to make pen tips. We usually say that the tip of the golden pen is made of alloy. The tip of a better gold pen is marked with 14K, which means 58% gold. In addition, there are silver and red copper: those marked with 12K mean 50% gold. In this way, not only the hardness is improved, but also the elasticity is particularly good. The small silver round particle on the tip of the gold pen is called iridium. It is an alloy, mainly iridium, and other rare metals, especially wear-resistant. Because when writing it all depends on it to scratch on the paper, its life often has to "travel thousands of miles". The iridium nib is made of stainless steel. Fortunately, the small round particles on the iridium nib are exactly the same as those on the gold pen. Therefore, the use effect of iridium gold pen is similar to that of gold pen, but the price is much cheaper. Therefore, the iridium gold pen with low price and high quality is very popular. Ordinary dip pens and pens have no iridium embedded on their nibs, so their service life is much shorter.