Blech aus einer H32-Aluminiumlegierung der 5XXX-Serie mit Hohem Magnesiumgehalt und Herstellungsverfahren dafür

Details

Veröffentlichungs-Nr.

EP4768613

Anmeldetag

12. Oktober 2024

Veröffentlichung

17. April 2025

Rechtsraum

EP

Abstract

The present disclosure relates to a high-magnesium 5XXX series H32 aluminum alloy sheet and a preparation method therefor. The aluminum alloy sheet comprises the following chemical components in percentage by weight: Si: 0-0.15%, Fe: 0.20-0.30%, Cu: 0-0.05%, Mn: 0.41-0.49%, Mg: 4.0-4.9%, Cr: 0.06-0.14%, Zn: 0-0.05%, Ti: 0.01-0.03%, and the balance being Al and inevitable impurities; wherein the content of each of the inevitable impurities in percentage by weight is greater than or equal to 0 and less than or equal to 0.05%, and the total content in percentages by weight of the inevitable impurities is greater than or equal to 0 and less than or equal to 0.15%; and the following formula is satisfied: (Si+Fe)/Mn ≤ 1, wherein element symbols in the formula respectively represent the numerical values preceding the % symbol of the weight percentage content of corresponding elements. The aluminum alloy sheet according to the present disclosure has a yield strength of ≥ 260MPa, an elongation rate of ≥ 12%, and a minimum bend radius at 90° of ≤ 1.0 × sheet thickness. Furthermore, the production process is greatly shortened, the production efficiency is improved, and the performance consistency between batches of sheets is better.

Anmelder

Firma

BAOSHAN IRON & STEEL CO., LTD.

Land

🇨🇳 China