Abstract: The present invention relates to compositions of welding wire comprised of carbon, manganese, silicon, aluminum, chromium, copper, nickel, calcium, rare-earth metals, iron in the following proportions, mass %:______________________________________ carbon 0.03 to 0.25 manganese 0.8 to 2.2 silicon 0.7 to 2.2 aluminium 0.005 to 0.2 chromium 0.01 to 0.25 copper 0.01 to 0.25 nickel 0.01 to 0.25 calcium 0.001 to 0.02 rare-earth metals 0.01 to 0.1 iron the balance.

Abstract: A protective coating includes fire clay, graphite, water glass, water and alumina-containing material, the ingredients being present in an amount of up to a half the weight of the total mixture. Used as the alumina-containing material are such substances as commercial alumina, abrasive slurry, catalyst wastes from the production of synthetic rubber. The protective coating may also include in its composition a boron-containing material in an amount of from 0 to 10 percent by weight of the total weight of the composition, such as datolite and danburite concentrate, ascharite, boric acid, colemanite, pandermite, borocalcite, boronatrocalcite, as well as soda ash in an amount of from 0 to 5 percent by weight.