FOSTELOLLOY C-4 ndi Nickel-Cromium-Molybdenum Aloya ndi kutentha kwambiri. Imakhala ndi kuchuluka kwa kuchuluka kwa chimbudzi. Ndi kutentha kwambiri kukana mpaka 1900 ¡Ãf (1038 ¡¡®c) kumapangitsa kuti zikhale zoyenera kugwiritsa ntchito mankhwala ambiri mu "monga".
FSTELOLELOY B3 Bolts amadziwikanso kuti alloy b-3 ma bolts ndipo amatha kupezeka pansi pa N10675. Chivomerezo ichi sichingalepheretse kwambiri hydrobromic, sulfuric ndi hydrochloric acid. Makampani ambiri, kuphatikizapo makampani amakampani, lingalirani za endoy yosavuta makina, ndipo maumboni ake amalola makina amakina kuti azipanga mosavuta komanso kuwotchera.
Chingwe chimakhala chokwera, milomo kapena rim, kunja kwa zakunja kapena mkati, zomwe zimathandiza kuwonjezera mphamvu (monga mtengo wamtambo kapena t-bat); Kuti mulumikizidwe mosavuta \ / kusamutsa kwa kulumikizana ndi chinthu china (monga chowala kumapeto kwa chitoliro, scal cylinder, etc., kapena pamunda wa mandala); kapena pokhazikitsa ndikuwongolera mayendedwe a makina kapena mbali zake (monga tambala mkati mwagalimoto kapena gudumu la tram, zomwe zimapangitsa mawilo kuti asamayendetse njanji). Mawu akuti "Flange" imagwiritsidwanso ntchito ngati chida chogwiritsidwa ntchito chopanga ma flanges.