11. Most studios now use a heavily alloyed lead that is manufactured for restoration work. 12. Several techniques exist to produce pre-alloyed powder, such as Grade 5. 13. The powder feedstock is typically pre-alloyed , as opposed to a mixture. 14. One part pure gold is alloyed with three parts Sterling silver ( inquarting ). 15. According to the titanium alloy article, titanium is usually alloyed with aluminium anyway. 16. Especially rare earth metals have been shown to reduce sintering of metal catalysts when alloyed . 17. Metallurgy of bronze and pseudo-bronze ( alloyed with arsenic instead of tin ). 18. The strongest aluminium alloys are less corrosion resistant due to galvanic reactions with alloyed copper. 19. Xstrata Technology personnel investigated the use of a new low-alloyed 304L stainless steel. 20. Unfortunately for aspiring female astronomers, even the gold age appears to be alloyed with disparities.