LARGER METAL FOR ENGINE

摘要

A bearing material for a large internal combustion engine is disclosed which comprises a backing metal of steel 1, a bonding layer 2 of aluminium or an aluminium alloy formed on the backing metal, a bearing alloy layer 3 formed on the bonding layer, and optionally a surface layer 4 formed on the bearing alloy layer and comprising lead, tin or an alloy thereof. The bearing alloy layer comprises, by weight, from 40 to 50% tin, from 0.5 to 10% lead, from 0.1 to 1.5% copper, the balance being aluminium and any incidental impurities. The bearing alloy layer may further comprise, by weight, no more than 5% in total of at least one of the elements manganese, nickel, silicon, silver, magnesium, antimony and/or zinc. These bearing materials may have superior seizure resistance and fatigue resistance properties.