Al-si-mg alloy sheet metal for motor car body outer panel

C - Chemistry – Metallurgy – 22 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C22C 21/02 (2006.01) C22F 1/043 (2006.01)

Patent

CA 2471501

The invention concerns a sheet metal for a motor vehicle body outer panel, having a thickness ranging between 0.8 and 1.2 mm, consisting in wt. % of: Fe: 0.25-0.40 and preferably: 0.25-0.35; Si: 0.90-1.20 and preferably: 0.95-1.10; Cu: 0.10-0.25 and preferably: 0.15-0.20; Mg: 0.35-0.50 and preferably: 0.40-0.50; Mn: 0.05-0.20 and preferably: 0.08-0.15; other elements < 0.05 each and < 0.15 in total, the rest being aluminium, having after solution heat treatment, quenching, pre-tempering or reversion, and maturation at room temperature for 3 weeks to 6 months, an L R¿0.2? direction yield strength less than 160 MPa's, and preferably less than 150 MPa's. A yield strength > 180 MPa's can be obtained on the body stamping part after the paints have been cured. The inventive sheet metal enable to reduce the thickness of parts while satisfying all the other required properties.

L~invention a pour objet une tôle pour pièce de peau de carrosserie de voiture, d~épaisseur comprise entre 0,8 et 1,2 mm, de composition (% en poids) : Fe : 0,25-0,40 et de préférence : 0,25-0,35, Si : 0,90-1,20 et de préférence : 0,95-1,10, Cu : 0,10-0,25 et de préférence : 0,15-0,20, Mg : 0,35-0,50 et de préférence : 0,40-0,50, Mn : 0,05-0,20 et de préférence : 0,08-0,15, autres éléments <0,05 chacun et <0,15 au total, reste aluminium, présentant après mise en solution, trempe, pré-revenu ou réversion, et maturation à température ambiante comprise entre 3 et 6 mois, une limite d~élasticité sens LR0,2 inférieure à 160 Mpa, et de préférence à 150 Mpa. On peut obtenir sur la pièce emboutie après cuisson des peintures une limite d~élasticité > 180 Mpa. Les tôles selon l~invention permettent de réduire l~épaisseur des pièces, tout en satisfaisant à toutes les autres propriétés requises.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Al-si-mg alloy sheet metal for motor car body outer panel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Al-si-mg alloy sheet metal for motor car body outer panel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Al-si-mg alloy sheet metal for motor car body outer panel will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1785182

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.