ASTM B807-02

Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys

SCOPE
1.1 This practice is intended to cover the controls necessary to press solution heat treat some 6xxx and 7xxx series aluminum alloys at extrusion facilities when the alloy design permits them to be so treated; specific alloys are shown in Table 1. For the alloys listed in , this practice is an alternate process to solution heat treatment in a furnace, such as specified in Practice B 918 for the attainment of T3, T4, T6, T7, T8 and T9-type tempers (See ANSI H35.1).

General Information

• Status: Historical
• Publication Date: 09-Oct-2002
• ICS: 77.120.10 - Aluminium and aluminium alloys
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.03 - Aluminum Alloy Wrought Products

Relations

• Replaces: ASTM B807-95 - Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys
• Effective Date: 10-Oct-2002
• Replaced By: ASTM B807/B807M-06 - Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys
• Effective Date: 15-Mar-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:B807–02
Standard Practice for
Extrusion Press Solution Heat Treatment for Aluminum
1
Alloys
This standard is issued under the fixed designation B 807; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
AB
TABLE 1 Extrusion Billet or Log Temperature
1. Scope *
Billet or Log Temperature
1.1 This practice is intended to cover the controls necessary
Alloy
Upper °F Lower °F
to press solution heat treat some 6xxx and 7xxx series
aluminum alloys at extrusion facilities when the alloy design
6005, 6005A, 6105 1025 800
6061, 6262 1035 850
permits them to be so treated; specific alloys are shown in
6060, 6063, 6101, 6463 1025 800
Table 1. For the alloys listed in Table 1, this practice is an
6351 1010 875
alternate process to solution heat treatment in a furnace, such 7004, 7005 950 710
7029, 7046, 7116, 7129, 7146 1000 850
as specified in Practice B 918 for the attainment of T3, T4, T6,
A
The range shown may require appreciable narrowing, depending upon
T7, T8 and T9-type tempers (See ANSI H35.1).
reduction ratio, section configuration, and other extrusion parameters.
B
These temperatures may be altered when statistical analysis of tensile test
2. Referenced Documents
data substantiates that the material will meet the tensile property requirements of
5.3.1 and other required material characteristics.
2.1 The following documents of the issue in effect on the
date of material purchase form a part of this specification to the
extent referenced herein:
3.1.4 solution heat treatment—heating an alloy at a suitable
2.2 ASTM Standards:
temperature for sufficient time to cause one or more soluble
B 557 Test Methods of Tension Testing Wrought and Cast
constituents to enter into solid solution, and then cooling the
2
Aluminum- and Magnesium-Alloy Products
material rapidly enough to retain the constituents in solution.
B 918 Practice for Heat Treatment of Wrought Aluminum
(Note 1)
2
Alloys
NOTE 1—Metallurgical structure of the alloy is influenced by the
2.3 ANSI Standard:
heating equipment used. Some heating equipment achieves very rapid
H35.1 Alloy and Temper Designation Systems for Alumi-
temperature rise and may require the metal to be soaked for a period
2
num
within the temperature range noted in Table 1 to ensure that sufficient
applicable alloying elements are taken into solid solution. This soaking
3. Terminology
stage may be eliminated if the alloying elements are substantially in solid
3.1 Definitions: solution prior to charging the metal to the heating equipment.
3.1.1 extrusion billet—the starting stock for the extrusion
3.2 Definitions of Terms Specific to This Standard:
operation.Extrusionbilletisasolidorhollowform,commonly
3.2.1 potentiometer measuring system—a means of tem-
cylindrical,thatisusuallyacastproduct,butmaybeawrought
perature measurement which compares thermoelectric electro-
productormanufacturedfromsinteredpowder.Extrusionbillet
motive force (emf) with a reference emf (also known as a
is termed as the final length of material charge used in the
null-balance indicator).
extrusion process.
3.2.2 remote temperature sensing system—a system of tem-
3.1.2 extrusion ingot—a cast form that is solid or hollow,
perature measurement of a non-contact type usually including
usually cylindrical, suitable for extruding.
either a single or multi-wave length radiation sensing device.
3.1.3 extrusion log—the starting stock for extrusion billet.
3.2.3 statistical significance of material property data—
Extrusion log is usually produced in long lengths from which
though different statistical techniques may be found useful in
the shorter length extrusion billets are cut.
the analysis of mechanical property data, sufficient mechanical
property test data should be accumulated to adequately deter-
1
mine the form of the frequency distribution curve and to
This practice is under the jurisdiction of ASTM Committee B07 on Light
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on
provideareliableestimateofthepopulationmeanandstandard
Aluminum Alloy Wrought Products.
deviation. In most instances, the distribution is normal in form,
Current edition approved Oct. 10, 2002. Published December 2002. Originally
and properties are based on the results of a minimum of 100
approved in 1990. Last previous edition approved in 1995 as B 807 – 95.
2
Annual Book of ASTM Standards, Vol 02.02. tests from at least 10 different lots of material. There should be
*ASummary of Changes section appears at the end of this standard.
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