Claims
- 1. An aluminum sheet material for automobiles, which consists essentially of more than 3.5 to less than or equal to 5 wt % of Si, 0.3 to 0.8 wt % of Mg, 0.4 to 1.5 wt % of Zn, 0.4 to 1.5 wt % of Cu, 0.4 to 1.5 wt % of Fe, and 0.6 to 1 wt % of Mn, and one or more members selected from the group consisting of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities.
- 2. The aluminum sheet material of claim 1 which is resistant to impact energy and excellent in bending property.
- 3. The aluminum sheet material of claim 1, which has a tensile strength of 253-330 MPa.
- 4. The aluminum sheet material of claim 1, which has a tensile strength of 253-303 MPa.
- 5. The aluminum sheet material of claim 1, which has a proof strength of 140-227 MPa.
- 6. The aluminum sheet material of claim 1, which has a proof strength of 140-208 MPa.
- 7. The aluminum sheet material of claim 1, which has an elongation of 14.3-24.8%.
- 8. The aluminum sheet material of claim 1, which has an elongation of 16.3-24.8%.
- 9. A method of producing an aluminum sheet material for automobiles which comprises:providing an aluminum casting ingot which consists essentially of more than 3.5 to less than or equal to 5 wt % of Si, 0.3 to 0.8 wt % of Mg, 0.4 to 1.5 wt % of Zn, 0.4 to 1.5 wt % of Cu, 0.4 to 1.5 wt % of Fe, and 0.6 to 1 wt % of Mn, and one or more members selected from the group consisting of 0.01 to 0.2 wt % of Cr, 0.01 to 0.2 wt % of Ti, 0.01 to 0.2 wt % of Zr, and 0.01 to 0.2 wt % of V, with the balance of aluminum and unavoidable impurities; melting the aluminum ingot; casting the aluminum ingot; homogenizing the aluminum ingot; hot-rolling the aluminum ingot; and cold-rolling the aluminum ingot, wherein said aluminum casting ingot comprises at least one member selected from the group consisting of automobile aluminum parts scraps containing 2.5 wt % or above of Si, aluminum can scraps containing 1 wt % or above of Mg, and aluminum sash scraps containing 0.2 wt % or above of Mg.
- 10. The method of producing an aluminum sheet material for automobiles as claimed in claim 9, wherein the aluminum alloy casting ingot comprises up to 100% recycled scraps.
- 11. The method of producing an aluminum sheet material for automobiles as claimed in claim 9, wherein the percent reduction is 98% or above, in the production of the aluminum sheet material for automobiles.
- 12. The method of claim 9, wherein the aluminum sheet material has a tensile strength of 253-330 MPa.
- 13. The method of claim 9, wherein the aluminum sheet material has a tensile strength of 253-303 MPa.
- 14. The method of claim 9, wherein the aluminum sheet material has a proof strength of 140-227 MPa.
- 15. The method of claim 9, wherein the aluminum sheet material has a proof strength of 140-208 MPa.
- 16. The method of claim 9, wherein the aluminum sheet material has an elongation of 14.3-24.8%.
- 17. The method of claim 9, wherein the aluminum sheet material has an elongation of 16.3-24.8%.
Priority Claims (1)
Number |
Date |
Country |
Kind |
10-133918 |
May 1998 |
JP |
|
Parent Case Info
This application is the national phase under 35 U.S.C. §371 of PCT International Application No. PCT/JP99/02547 which has an International filing date of May 17, 1999, which designated the United States of America.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/JP99/02547 |
|
WO |
00 |
2/16/2000 |
2/16/2000 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO99/60181 |
11/25/1999 |
WO |
A |
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4718948 |
Komatsubara et al. |
Jan 1988 |
|
Foreign Referenced Citations (5)
Number |
Date |
Country |
3008358 |
Mar 1980 |
DE |
56139667A |
Oct 1981 |
JP |
58-31054 |
Feb 1982 |
JP |
9-256095A |
Sep 1997 |
JP |
10-110232A |
Apr 1998 |
JP |