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structural steel with minimum yield strength of 1380 MPa (compare: high-strength steel), konstruktsiooniterased voolepiiriga vähemalt 1380 MPa (vrd kõrgtugev teras)
ülitugev teras . Materjalitehnika terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtr/%C3%BClitugev%20teras/1/est (08.07.2026)
