Provided is, as a material for an automotive door beam, a 7000-series aluminum alloy extruded material having excellent SCC resistance in a higher strength range (proof stress of 460 MPa or greater) than ever before. The 7000-series aluminum alloy extruded material comprises: 7.5-9.0 mass% of Zn; 1.3-2.0 mass% of Mg; 0.1-0.7 mass% of Cu; at most 0.15 mass% of Si; at most 0.3 mass% of Fe; 0.005-0.2 mass% of Ti; 0.1-0.5 mass% of at least one among Mn, Cr, and Zr within a range where Mn is 0.3 mass% or less, Cr is 0.25 mass% or less, and Zr is 0.25 mass% or less; and the remainder consisting of Al and impurities, wherein a Fe-based crystallized substance is contained, and the average Cu content thereof is 5.0 mass% or less.
AUTOMOTIVE DOOR BEAM MADE OF ALUMINUM ALLOY EXTRUDED MATERIAL
TÜRTRÄGER EINES KRAFTFAHRZEUGS AUS EXTRUDIERTER ALUMINIUMLEGIERUNG
RENFORT DE PORTE D'AUTOMOBILE EN MATÉRIAU D'ALLIAGE D'ALUMINIUM EXTRUDÉ
2022-05-11
Patent
Electronic Resource
English
IPC: | C22C Legierungen , ALLOYS / B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING , Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen |
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