The method of obtaining the BRONZE graphite is sintering using this technique a suitable mixture of bronze powder and graphite is achieved, granulometric well classified, then the mixture obtained certain pressures compact, which vary according to the required density, shape and some specific properties. After compacted, they are sintered at temperature and gas composition regimes established for each case.

The particularity of the graphite bronzes obtained by this technique is that this type of material has interconnected porosity each other, which favors oil impregnation, giving an important property that is self-lubricating. This property makes this kind of bronze is used in machines or equipment where lubrication is limited or almost nil. It should be noted that this type of material is impossible to obtain by the classic method of casting because, due to the difference in density, graphite tends to float on the metal while in the liquid state, which does not happen with the technique of sintered which obtains a homogeneous dispersion throughout the metal structure.

The life of graphite bronze, even without oil, is at least three times greater than that obtained by cast bronze with the same chemical composition.

ASTM B-438-67 Grade I; Class B,
SAE 841 or equivalent.