Claims
- 1. Al-based alloy for drawing and/or ironing, consisting essentially of, in weight percent:
- Fe<0.25; Si<0.25; Mn from 1.05 to 1.6; Mg from 0.7 to 2.5; Cu from 0.20 to 0.6; Cr from 0 to 0.35; Ti from 0 to 0.1; V from 0 to 0.1; other elements: each<0.05; total <0.15; and remainder Al,
- said alloy being in the form of a rolled strip or sheet produced by casting an ingot, homogenizing or heating said ingot, hot rolling and cold rolling without intermediate annealing to a degree of cold deformation greater than 50%, substantially without Mn-deficient "white areas" being visible in the micrographic structure of the ingot after homogenization or heating.
- 2. Alloy according to claim 1, wherein the Mn content is greater than 1.1%.
- 3. Alloy according to claim 1, wherein the Mn content is greater then 1.2%.
- 4. Alloy according to claim 1, wherein the Fe content is less than 0.20%.
- 5. Alloy according to claim 1, wherein the Fe content is less than 0.15%.
- 6. Alloy according to claim 1, 2, 3, l or 5, wherein the Cu content is greater than 0.25%.
- 7. Alloy according to claim 1, said alloy having in the H19 state a R.sub.0.2 (transverse direction)>305 MPa and a LDR >1.92.
- 8. Alloy according to claim 1, said alloy having in the H19 state a R.sub.0.2 (transverse direction)>305 MPa and LIR >72%.
- 9. Alloy according to claim 1, wherein Mn is 1.2-1.6 and Mg is 0.8-1.2.
- 10. Alloy according to claim 1, wherein Mg is about 0.95-1.05.
- 11. Alloy according to claim 1, wherein Mn is about 1.4-1.6.
- 12. Al-based alloy for drawing and/or ironing, consisting essentially of, in weight percent:
- Fe<0.15; Si<0.25; Mn from 1.2 to 1.6; Mg from 0.8 to 1.2; Cu from 0.2 to 0.6; Cr from 0 to 0.35; Ti from 0 to 0.1; V from 0 to 0.1; other elements: each<0.05; total <0.15; and remainder Al, said alloy being in the form of a rolled strip or sheet produced by casting an ingot, homogenizing or heating said ingot, hot rolling and cold rolling without intermediate annealing to a degree of cold deformation greater than 50%, substantially without Mn-deficient "white areas" being visible in the micrographic structure of the ingot after the homogenizing or heating.
- 13. Process for obtaining a rolled strip or sheet, comprising the steps of:
- obtaining an Al-based alloy consisting essentially of, in weight percent, Fe<0.25; Si<0.25; Mn from 1.05 to 1.6; Mg from 0.7 to 2.5; Cu from 0.20 to 0.6; Cr from 0 to 0.35; Ti from 0 to 0.1; V from 0 to 0.1; other elements: each <0.05; total<0.15; and remainder Al, casting said alloy, homogenizing or heating, hot rolling and cold rolling without intermediate annealing, said alloy being substantially without Mn-deficient "white areas" being visible in the micrographic structure of the cast alloy after said homogenizing or heating, wherein the degree of cold deformation is greater than 50%.
Priority Claims (1)
Number |
Date |
Country |
Kind |
91 03662 |
Mar 1991 |
FRX |
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Parent Case Info
This is a continuation of application Ser. No. 08/120,909 filed on Sep. 15, 1993, now abandoned which is a continuation-in-part of U.S. application Ser. No. 07/850,923, filed Mar. 13, 1992 now abandoned.
Foreign Referenced Citations (1)
Number |
Date |
Country |
6487752 |
Mar 1989 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
120909 |
Sep 1993 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
850923 |
Mar 1992 |
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