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Graphite Crucible For Gold Melting

In the field of metalworking, the use of graphite crucibles is essential for melting and refining precious metals such as gold. Graphite crucibles are superior to other crucible materials for their ability to withstand high temperatures and resist chemical corrosion. This makes them ideal for...

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Product Introduction

One of the main advantages of using graphite crucibles for gold melting is their durability. They can withstand repeated use without cracking, which is important when melting gold because of the high cost of the metal. This means that when properly cared for, a single graphite crucible can be used for a long time, making it a cost-effective choice for gold melting applications.

Item	Unit	Guarantee value	Guarantee value
Max grain size	mm	0.8	0.8
Bulk density	g/cm3	≥1.70	≥1.73
Specific resistance	μΩ.m	≤8.5	≤8.0
Bending strength	MPa	≥10.0	≥12.0
Compressive strength	MPa	≥24.0	≥31.0
Thermal Condcutivity	W/(m.k)	≥120	≥130
C.T.E.(100-600) °C	10-6/°C	≤2.5	≤2.5
Ash content	%	≤0.3	≤0.3

Graphite crucibles are also highly resistant to chemical corrosion, which is crucial when working with gold. Impurities in the metal can react with the crucible material, leading to contamination of the gold alloy. However, the chemical inertness of graphite ensures that the gold remains pure and free from impurities.

Another advantage of graphite crucibles is that they are reusable. After the gold has been melted and cast into the desired shape, the crucible can be cleaned and reused for the next batch of gold. This means that there is less waste generated in the gold melting process and also saves money in the long run.

Graphite crucibles are an excellent choice for gold melting due to their durability, resistance to corrosion, and reusability. While there may be other materials that could be used, none have the same level of reliability and consistency that graphite offers. For those working in the field of metalworking, investing in a high-quality graphite crucible is essential for efficient and effective gold melting.