| abstract |
This invention relates to metallurgy, in particular, to the composition of wear-resistant high-manganese cast steel for agricultural tractor units and other tracked vehicles. The purpose of the invention is to increase the hardness, wear resistance and corrosion-fatigue strength of steel. The steel additionally contains zirconium and calcium in the following ratio, wt.%: Carbon 0.9-1.5; manganese 7.0-12.0; silicon 0.3-1.0; chromium 0.05-1.0; nickel 0.05-1.5; copper 0.05-0.6; nitrogen 0.005-0.03; vanadium 0.02-0.35; titanium 0.01-0.15; aluminum 0.01-0.1; zirconium 0.001-0.006; calcium 0.001-0.006; iron - the rest. The use of steel allows to increase the operational durability of parts made from this steel. 2 tab. (L |