AlMg AlMg ALLOY FOR WELDED CONSTRUCTIONS HAVING IMPROVED MECHANICAL CHARACTERISTICS

摘要

The present invention is characterized in that the maximum tensile strength R _m is greater than 275 MPa, the elongation A is greater than 17.5%, the product A x R _m is greater than 6000,;Mg: 4.2 - 4.8 Mn: 0.5 Zn: 0.4;Fe: 0.45 Si: 0.30 and optionally;Cr: 0.15 Cu: 0.25 Ti: 0.20 Zr: 0.20;And the remainder is Al and inevitable impurities, the inevitable impurities individually are less than 0.05, and the total amount is less than 0.15, and satisfies the formula Mn + Zn 0.7 .;In particular, the thin plate according to the invention is for producing a rod or rail tanker, a transport container and a wheel of a vehicle.