2012年4月19日星期四

Tungsten alloy paper weight

Tungsten alloy paper weights are decorative objects, designed to hold sheets of paper on a surface to prevent wind from blowing them away. Paperweight has a long history in China, even can be traced back to the birth date of paper.
Tungaten alloy paperweight is made of
At Chinatungsten Online, we are offering tungsten heavy alloy paper weights. No matter how many tungsten heavy alloy paper weights you have, you never seem to have the right bar for the job. tungsten heavy alloy paper weight can hold any book, no matter how thick.

But despite being used for jewelry and having similar densities as gold, AU 79, and tungsten, W 74, are not the same element. The higher profit margin bar using smalltungsten slugs with lead alloy would still pass a sound and feeling test but would be slightly underweight and it is likely that neither a chemical test nor a x-ray fluorescence test would be passed because the gold coating would not be thick enough.

没有评论:

发表评论