# Precious metals

Graphite and carbon for precious metals: ESGRAF advises on material selection and application support across Mexico and the Americas.

Graphite molds, crucibles, and components for melting and forming of precious metals.

Melting and forming of precious metals require controlled-purity graphite and precise geometries. An unsuitable grade can contaminate the metal or shorten mold life.

ESGRAF recommends crucibles, molds, and machined components for jewelry, ingot pouring, and precision casting.

## Processes
- Melting of gold, silver, and alloys
- Molds for jewelry and ingot pouring
- Precision casting
- Mold release and lubrication

## Challenges
- Precious-metal contamination
- Surface finish of the ingot or part
- Short mold life
- Dimensional repeatability

## Advantages
- Low reactivity with precious metals
- Good surface finish
- Precision machining for molds
- Grades selected by purity and density

- [Industries](https://esgraf.com/en/industries)
- [Alternate](https://esgraf.com/industrias/metales-preciosos)