ASTM B807/B807M-13

Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys

ASTM International, 06/01/2013

Publisher: ASTM

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Published:01/06/2013

Pages:5

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1.1 This practice establishes the controls required for extrusion press solution heat treatment of the 6xxx and 7xxx series aluminum alloys in Table 1 when ASTM material specifications allow use of this process in lieu of furnace solution heat treatment. For the alloys listed in Table 1, this practice is an alternate process to solution heat treatment in a furnace, such as specified in Practice B918/B918M for the attainment of T3, T4, T6, T7, T8 and T9-type tempers (see ANSI H35.1/H35.1M ).

TABLE 1 Extrusion Billet or Log Temperature High Limit^A

Alloy	Billet or Log Temperature
Alloy	Upper °F	[Upper °C]
6005A, 6105	1050	565
6061, 6262, 6041, 6064	1050	565
6060, 6063, 6101, 6463, 6360, 6560	1060	570
6351, 6082,	1050	565
6066, 6070	1020	550
7004, 7005	1000	540
7029, 7046, 7116, 7129, 7146	1000	540

^A These upper limit temperatures avoid the possibility of eutectic melting due to overheating, and include a safety factor of approximately 25°F [15°C] degrees.

1.2 This practice applies only to extrusion press solution heat treatment for aluminum alloys. Precipitation hardening (aging) processing and equipment calibration shall meet the practice and requirements of Practice B918/B918M.

1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The SI units are shown in brackets or in separate tables. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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