density of gold - one of the unique physical characteristics of the metal.Because it is soft for use in practice added thereto other metals to improve the technological properties.
In the jewelry business, as we know, used dragmetalpov alloys in different proportions.The content of pure precious metal in the alloy is measured in thousandths of an 585-carat gold - an alloy containing 585 parts pure gold of 1000. The corresponding figure is put on the product.Accordingly, with the addition of other metals gold density, i.e. an alloy thereof is changed.On the basis of this indicator in the reception areas of gold products determine their authenticity and compliance with the declared sample.
Features gold
precious than gold - a heavy metal.Its density in its pure form is 19 621 kg / m³.To perceive the dry fact as vividly as possible, imagine a small ball of pure metal with a diameter of 46 mm.Its mass is equal to 1 kilogram.
high density of gold is used in its production: thanks to her nuggets and sand, you can weed out the washing on the rocks.
density of gold in its pure form (that is considered to be the 999.99-carat) 19.3 g / cm3.Native, it has a slightly lower density: 18-18.5 g / cm3.In alloys of different samples, this figure the.We will tell about them on.
density alloys of gold
As we know more of the school course, the density of the material - physical property, defined as the mass per unit volume taken.It is measured by the ratio of its weight and size.
For usable in jewelery alloy of gold mixed with copper, silver, nickel, platinum, palladium and other metals as noble or not.We pass the data on the density of gold alloys of different samples.
most popular, affordable and well-suited to work with it - 585-I sample.The density of gold 585-carat - 12,5-14 g / cm3.These are determined by the scope and the 583rd sample (Soviet model).
for coin samples, 900 th and 917 th, the indicators are, respectively, 17,10-17,24 g / cm3 and 17,34-17,83 g / cm3.
As a frequent trial in jewelry, I-750 has a density of 14,5-17,5 g / cm3.
density of low-grade gold 375-carat - 11,54-11,56 g / cm3.
And finally, remember the other precious metals - silver.It is significantly easier to gold, silver alloys and the density is also lower.
Thus, the density of the most common products in the alloy 925 is 10.36 g / cm3.Second usage of 875-th test, - 10.28 g / cm3.
density of gold and silver - an important indicator that helps determine the content of the alloy of pure precious metal using various techniques.One of them, accessible, we'll continue.
hydrostatic method: define a sample of the precious alloy
in institutions specializing in the reception of gold jewelry, used a lot of different ways to determine and confirm the samples brought gold.On the basis of the knowledge that the gold - a heavy metal with a high density, was introduced to the use of hydrostatic method.
It is based on determining the difference in weight when measuring performance in the open air, in normal conditions and in a liquid with certain known density.
outset that this method of testing gold is suitable only for the integrity of the product, without stones, and other inserts of other materials.It is also not possible to obtain adequate data on the hollow product consisting of many moving parts.
For the hydrostatic weighing gold products need jewelry scales, measuring cup (or any other transparent), fishing line or thin thread.The liquid of known density typically distilled water is used.First, the product weighs gold ordinary method, the data are recorded.Then the balance is put a glass of water, filled with more than half the testimony of weights are reset (on the scale must be reset tare function).Our gold products, hanging on the line, is lowered into the water completely, without touching the bottom and walls of glass.These weights are also fixed.
To analyze the density of hydrostatic better use the calculator as a miscalculation by hand takes much longer and is not as accurate.
Conclusions
So, in this article we examined the density of gold - the precious metal, which each of us in his life faced and will face.Summarized data is shown as follows: the density of the most popular gold content of 585 minutes is 12,5-14 g / cm3, other alloys - less or more, respectively.By
density gold alloy sample can be determined, which is indicative of the content of pure gold in the alloy.These methods are used in institutions for taking gold.
We hope our article was informative and gave you a few exciting minutes.Let your box will only present high-grade gold!
