ASTM B807/B807M-20

Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys

ABSTRACT
This practice covers the controls required and standards for extrusion press solution heat treatment for 6xxx and 7xxx series aluminum alloys. For alloys such as 6005, 6005A and 6105 alloys, this practice is an alternative to solution heat treatment in a furnace. This practice only applies to extrusion press solution heat treatment for aluminum alloys and does not cover precipitation hardening (aging) processing. The alloy billets shall be preheated prior to being extruded. Heating methods shall include, but not limited to, induction, flame impingement, or forced air. Pertinent control points shall include billet or log temperature in the heating equipment, billet temperature upon being charged into the press container, container temperature, ram speed, profile configuration, extrudate temperature upon exiting the press platen, extrudate temperature at quench entry, quench media temperature, and quench rate.
SCOPE
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).  
1.2 This practice applies only to extrusion press solution heat treatment for aluminum alloys. Precipitation hardening (aging) and annealing processing and equipment calibration shall meet the practice and requirements of Practice B918/B918M.  
1.3 The values stated in either Metric SI units or US Customary units are to be regarded separately as standard. The Metric 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 30-Apr-2020
• ICS: 77.120.10 - Aluminium and aluminium alloys
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.03 - Aluminum Alloy Wrought Products

Relations

• Refers: ASTM E18-18 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Jul-2018
• Refers: ASTM B881-17 - Standard Terminology Relating to Aluminum- and Magnesium-Alloy Products
• Effective Date: 01-Nov-2017
• Refers: ASTM B918/B918M-17a - Standard Practice for Heat Treatment of Wrought Aluminum Alloys
• Effective Date: 01-Aug-2017
• Refers: ASTM E18-17 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Jul-2017
• Refers: ASTM B918/B918M-17 - Standard Practice for Heat Treatment of Wrought Aluminum Alloys
• Effective Date: 01-May-2017
• Refers: ASTM B557M-14 - Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
• Effective Date: 15-May-2014
• Refers: ASTM B557-14 - Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
• Effective Date: 15-May-2014
• Refers: ASTM E10-14 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-May-2014
• Refers: ASTM E18-12 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Dec-2012
• Refers: ASTM E2281-08a(2012)e1 - Standard Practice for Process and Measurement Capability Indices
• Effective Date: 01-Oct-2012
• Refers: ASTM E10-12 - Standard Test Method for Brinell Hardness of Metallic Materials
• Effective Date: 01-Jan-2012
• Refers: ASTM E18-11 - Standard Test Methods for Rockwell Hardness of Metallic Materials
• Effective Date: 01-Nov-2011
• Refers: ASTM B648-10 - Standard Test Method for Indentation Hardness of Aluminum Alloys by Means of a Barcol Impressor
• Effective Date: 01-Dec-2010
• Refers: ASTM B647-10 - Standard Test Method for Indentation Hardness of Aluminum Alloys by Means of a Webster Hardness Gage
• Effective Date: 01-Dec-2010
• Refers: ASTM B557-10 - Standard Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
• Effective Date: 01-Jul-2010

Overview

ASTM B807/B807M-20: Standard Practice for Extrusion Press Solution Heat Treatment for Aluminum Alloys is an international standard developed by ASTM International. This standard provides guidelines for the controls and procedures needed for extrusion press solution heat treatment, specifically targeting aluminum alloys from the 6xxx and 7xxx series. The standard is intended as an alternative to conventional furnace solution heat treatment, offering a process that is often more efficient for specific aluminum alloy types, such as 6005, 6005A, and 6105.

This practice applies solely to the solution heat treatment phase using an extrusion press, and does not cover subsequent steps such as precipitation hardening (aging) or annealing. The standard sets forth the requirements for equipment, temperature control, calibration, and quality assurance to ensure consistent mechanical properties and product reliability.

Key Topics

ASTM B807/B807M-20 addresses several critical topics in extrusion press solution heat treatment, including:

• Applicability: Covers only 6xxx and 7xxx aluminum alloys when manufacturer specifications permit use of extrusion press solution heat treatment as an alternative to furnace methods.
• Control Points: Details essential process controls, such as:
  • Billet or log temperature in the heating equipment
  • Billet temperature upon pressing
  • Container temperature
  • Ram speed and profile configuration
  • Extrudate temperatures at various stages
  • Time between stages in the heat treatment and quenching process
  • Quench media temperature and defined cooling rates
• Equipment Requirements: Stipulates the need for preheating the aluminum billets using methods like induction, flame impingement, or forced air, with precise temperature monitoring and calibrated measurement equipment.
• Calibration Standards: Defines procedures and schedules for calibrating temperature sensors and control devices, including both contact and non-contact (remote) systems.
• Process Documentation and Quality Assurance: Outlines requirements for developing written procedures, data collection, analysis, and record keeping to demonstrate process capability and product compliance.

Applications

The extrusion press solution heat treatment process governed by ASTM B807/B807M-20 is used in aluminum manufacturing industries where quick and controlled heat treatment is crucial for achieving desired mechanical properties. Typical applications include:

• Production of Aluminum Extrusions: Used in structural components, transportation (automotive and aerospace), building/construction, electronics, and consumer products.
• Manufacturing Settings: Especially suitable for operations aiming to reduce production time and energy consumption compared to furnace solution heat treatment.
• Alternative Solution Heat Treatment: Provides a qualified pathway for manufacturers to meet alloy temper requirements (T3, T4, T6, T7, T8, and T9) as specified in other relevant aluminum standards.

This standard helps manufacturers maintain consistent quality and mechanical properties by ensuring the heat treatment process is well-controlled and verifiable.

Related Standards

For comprehensive quality and compliance, ASTM B807/B807M-20 references and should be used in conjunction with several other widely recognized standards, including:

• ASTM B918/B918M – Practice for Heat Treatment of Wrought Aluminum Alloys (addresses precipitation hardening and annealing not covered by B807/B807M-20)
• ASTM B557 / B557M – Test Methods for Tension Testing of Wrought and Cast Aluminum- and Magnesium-Alloy Products
• ASTM B647/B648 – Test Methods for Indentation Hardness of Aluminum Alloys
• ASTM E10/E18 – Test Methods for Brinell and Rockwell Hardness of Metallic Materials
• ASTM E2281 – Practice for Process Capability and Performance Measurement
• ANSI H35.1/H35.1M – Alloy and Temper Designation Systems for Aluminum

Aligning extrusion press solution heat treatment procedures with these standards ensures process consistency, regulatory compliance, and product reliability in the aluminum extrusion industry.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: B807/B807M − 20
Standard Practice for
Extrusion Press Solution Heat Treatment for Aluminum
Alloys
This standard is issued under the fixed designation B807/B807M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* 2. Referenced Documents
2.1 The following documents of the issue in effect on the
1.1 This practice establishes the controls required for extru-
date of material purchase forma part of this specification to the
sion press solution heat treatment of the 6xxx and 7xxx series
extent referenced herein:
aluminum alloys in Table 1 when ASTM material specifica-
tions allow use of this process in lieu of furnace solution heat
2.2 ASTM Standards:
treatment. For the alloys listed in Table 1, this practice is an
B557 Test Methods for Tension Testing Wrought and Cast
alternate process to solution heat treatment in a furnace, such
Aluminum- and Magnesium-Alloy Products
as specified in Practice B918/B918M for the attainment of T3, B557M Test Methods for Tension Testing Wrought and Cast
T4, T6, T7, T8, and T9-type tempers (see ANSI H35.1/
Aluminum- and Magnesium-Alloy Products (Metric)
H35.1M). B647 Test Method for Indentation Hardness of Aluminum
Alloys by Means of a Webster Hardness Gage
1.2 This practice applies only to extrusion press solution
B648 Test Method for Indentation Hardness of Aluminum
heat treatment for aluminum alloys. Precipitation hardening
Alloys by Means of a Barcol Impressor
(aging) and annealing processing and equipment calibration
B881 Terminology Relating toAluminum- and Magnesium-
shall meet the practice and requirements of Practice B918/
Alloy Products
B918M.
B918/B918M Practice for Heat Treatment of Wrought Alu-
minum Alloys
1.3 The values stated in either Metric SI units or US
E10 Test Method for Brinell Hardness of Metallic Materials
Customary units are to be regarded separately as standard. The
E18 Test Methods for Rockwell Hardness of Metallic Ma-
Metric SI units are shown in brackets or in separate tables.The
terials
values stated in each system may not be exact equivalents;
E2281 Practice for Process Capability and Performance
therefore,eachsystemshallbeusedindependentlyoftheother.
Measurement
Combining values from the two systems may result in non-
2.3 ASTM Manual:
conformance with the standard.
ASTM MNL 7 Presentation of Data and Control Chart
1.4 This standard does not purport to address all of the
Analysis
safety concerns, if any, associated with its use. It is the 3
2.4 ANSI Standard:
responsibility of the user of this standard to establish appro-
H35.1/H35.1M Alloy and Temper Designation Systems for
priate safety, health, and environmental practices and deter-
Aluminum
mine the applicability of regulatory limitations prior to use.
3. Terminology
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard-
3.1 Definitions:
ization established in the Decision on Principles for the
3.1.1 Refer to Terminology B881 for definitions of product
Development of International Standards, Guides and Recom-
terms used in this specification.
mendations issued by the World Trade Organization Technical
3.1.2 extrudate, n—material exiting an extrusion die subject
Barriers to Trade (TBT) Committee.
to further processing (quenching, stretching, cutting) to be-
come an extruded profile.
1 2
This practice is under the jurisdiction of ASTM Committee B07 on Light For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Metals and Alloys and is the direct responsibility of Subcommittee B07.03 on contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Aluminum Alloy Wrought Products. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved May 1, 2020. Published June 2020. Originally the ASTM website.
approved in 1990. Last previous edition approved in 2013 as B807/B807M – 13. Available fromAluminumAssociation, 1400 Crystal Dr., Suite 430,Arlington,
DOI: 10.1520/B0807_B0807M-20. VA 22202, http://www.aluminum.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B807/B807M − 20
A
TABLE 1 Extrusion Billet or Log Temperature High Limit
4.1.1 Automatic control and recording devices used to
Billet or Log Temperature
measure temperature at pertinent points in the heating equip-
Alloy
Upper °F [Upper °C]
ment shall be calibrated as specified in Section 5.
6060, 6063, 6101, 6463, 6360, 6560 1060 570
6005A, 6005, 6105, 6008, 6061, 1050 565
4.2 The extrusion press equipment and controls shall be
6262, 6064, 6351, 6082, 6040, 6041,
adequate to ensure that billets are capable of being extruded in
6042, 6064
6066, 6070, 6010, 6013 1020 550 accordance with the process requirements for the products
7004, 7005, 7046, 7146, 7046A 1000 540
being produced, as specified in Section 6.
7003, 7108A, 7029, 7116, 7129 980 525
A 4.3 Equipment for quenching the extrudate may consist of,
These upper limit temperatures reduce the possibility of eutectic melting due to
overheating, and include a safety margin of approximately 25 °F [15 °C]. but is not limited to, water or water/glycol mixture in a
standing wave, quench tank, spray, pressurized water device,
air/waterfogorairblast,orcombinationthereof.Controlsshall
be adequate to assure that the equipment is operated in a
3.1.3 extrusion billet, n—solid or hollow form, commonly
manner which achieves the required quench conditions as
cylindrical, used as the final length of material charged into the
prescribed in 6.6 and in Table 2.
extrusion press cylinder, and is usually a cast product, but may
be a wrought product or sintered from powder compact.
5. Equipment Calibration and Standardization
3.1.4 extrusion log, n—starting stock for extrusion billet;
5.1 Instrument and sensor calibration are defined in Table 3.
extrusionlogisusuallyproducedinlengthsfromwhichshorter
SystemAccuracy Test (SAT) requirements are defined in Table
extrusion billets are cut.
4.
3.1.5 extrusion press solution heat treatment, n—heating an
5.2 System Accuracy Tests (SAT) (For Contact and Non-
alloy to a suitable temperature and then extruding, while
contact Sensors)—Sensors must be compared at the frequency
holding for a sufficient time to allow one or more soluble
defined in Table 4 under operating conditions and temperature
constituentstoenterintosolidsolution,wheretheyareretained
to a contact test sensor and test instrument in contact with the
in a supersaturated state after quenching.
surface being measured within 3 in. [75 mm] of the focus point
3.1.6 furnace solution heat treatment, n—heatinganalloyto
of the non-contact sensor or 3 in. [75 mm] of the contact
a suitable temperature in a furnace and holding for a sufficient
sensor, or as best can be practically performed. The sensor
time to allow one or more soluble constituents to enter into
must read within the specified tolerance in Table 4 of the field
solid solution, where they are retained in a supersaturated state
test sensor and instrument; if not, the sensor system must be
after quenching.
adjusted to read within the stated tolerance or an offset in
3.2 Definitions of Terms Specific to This Standard:
operation must be used to account for the variation and may
3.2.1 product class, n—a category of extruded product,
then be used for production.
consisting of the same alloy, temper and thickness, which can
5.3 Continuous Billet Heating Furnace Calibration—For
be grouped for purposes of analysis of process qualification
continuous billet heating furnaces, the type of survey and
data and/or process monitoring data.
3.2.2 product type, n—a category of extruded product,
consisting of the same alloy and product form (such as tube,
TABLE 2 Recommended Minimum Die Exit Temperature,
pipe, rod, bar, or profile) which can be grouped for analysis of
Temperature Entering Quench, and Cooling Rate in Quench
A,B
process qualification and/or process monitoring.
Zone
3.2.3 remote temperature sensing system, n—a system of Min Temp Min Cooling
Min Die Exit
Alloy Entering Rate, °F/min
temperature measurement of a non-contact type usually includ- °F [°C]
Quench °F [°C] [°C/min]
ing either a single or multi-wavelength radiation sensing
6005, 6105, 6005A 950 [510] 860 [460] 300 [165]
6061 950 [510] 860 [460] 600 [335]
device.
6262, 6040, 6041, 6064 930 [500] 860 [460] 600 [335]
6351, 6082 950 [510] 900 [480] 600 [335]
4. Equipment
6060, 6063, 6101, 6360, 930 [500] 840 [450] 150 [85]
6463, 6560
4.1 Aluminum alloy billets are preheated prior to being
6066, 6070, 6010, 6013 970 [520] 910 [490] 900 [500]
extruded as prescribed in 6.2. Usual heating methods include, C
7004, 7005 750 [400] 725 [385] 120 [65]
C
but are not limited to, induction, flame impingement, or forced
7003, 7108A, 7029, 7046, 900 [480] 750 [400] 150 [85]
7046A, 7116, 7129, 7146
air. Controls shall be adequate to ensure that the equipment can
A
The cooling rate is defined as the average temperature drop per unit of time
be operated in a manner which precludes overheating of the
when subjected to a constant cooling system from initial extrudate temperature,
billet or deleterious contamination of the billet by the furnace
down to 400 °F [205 °C], forced cooling allowed at a reduced rate down to 350 °F
environment. Induction equipment may require measurement
[175 °C], and still air cooling (faster is acceptable) continuing to ambient
temperature.
of thermal gradients along the billet. Flame impingement
B
These minimum temperatures and cooling rates may be altered when statistical
devices require assessment of thermocouple placement relative
analysis of mechanical property test data substantiates that the material will meet
to burner location to avoid the possibility of non-uniform the tensile property requirements of 7.1 and other required material characteristics
as required in this specification.
surface temperature. Billet temperature shall be monitored and
C
Air or air mist only cooling preferred, as higher cooling rates may degrade
controlled to the extent that the extrusion billet is not to exceed
corrosion performance.
the maximum temperature shown in Table 1 prior to extrusion.
B807/B807M − 20
TABLE 3 Instrument and Sensor Calibration
Calibration Accuracy
Device Maximum Calibration Period Used For Calibrated Against
Required
SAT; initial calibration of record,
Field Test Instrument within past 12 months ±1 °F [±0.6 °C] National Institute of Standards and
control or monitoring sensors
Technology (NIST) or equivalent
SAT; initial calibration of record,
Field Test Sensor within past 12 months ±2 °F [±1.1 °C] national standard
control or monitoring sensors
ISO17025, A2LA or instruments
manufacturer with a process
before first use (installation in measuring, recording or controlling
traceable to the National Institute
Non-contact Sensors equipment) and at least annual ±10 °F [5.5 °C] the temperature of thermal
of Standards and Technology
thereafter processing equipment
(NIST) or equivalent national
standard
TABLE 4 System Accuracy Test
Calibration Accuracy (Maximum SAT
Method Instrumentation Device SAT Frequency
Difference Allowed)
monthly
Probe non-contact ±15 °F [±8.3 °C]
[max 31 days]
weekly
Comparative Method ±10 °F [±5.5 °C]
Probe in conjunction with Comparative [max 7 days]
contact
Method quarterly
Probe ±10 °F [±5.5 °C]
[max 91 days]
omitted if it has been demonstrated that they are not essential to achieving
written procedures for performing the survey should be estab-
an appropriate degree of process control.
lished for each particular furnace involved. The types of
continuous billet heating furnaces may vary considerably, 6.2 Billets shall be heated to a temperature appropriate for
thealloyandnottoexceedthemaximumtemperatureslistedin
dependingupontheproductandsizesinvolved.Forsomet
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: B807/B807M − 13 B807/B807M − 20
Standard Practice for
Extrusion Press Solution Heat Treatment for Aluminum
Alloys
This standard is issued under the fixed designation B807/B807M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
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).
1.2 This practice applies only to extrusion press solution heat treatment for aluminum alloys. Precipitation hardening (aging)
and annealing processing and equipment calibration shall meet the practice and requirements of Practice B918/B918M.
1.3 The values stated in either Metric SI units or inch-pound US Customary units are to be regarded separately as standard. The
Metric 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 safety, health, and healthenvironmental practices and determine the
applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
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:
2.2 ASTM Standards:
B557 Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products
B557M Test Methods for Tension Testing Wrought and Cast Aluminum- and Magnesium-Alloy Products (Metric)
B647 Test Method for Indentation Hardness of Aluminum Alloys by Means of a Webster Hardness Gage
B648 Test Method for Indentation Hardness of Aluminum Alloys by Means of a Barcol Impressor
B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products
B918/B918M Practice for Heat Treatment of Wrought Aluminum Alloys
E10 Test Method for Brinell Hardness of Metallic Materials
E18 Test Methods for Rockwell Hardness of Metallic Materials
E2281 Practice for Process Capability and Performance Measurement
2.3 ASTM Manual:
ASTM MNL 7 Manual on Presentation of Data and Control Chart Analysis
2.4 ANSI Standard:
H35.1/H35.1M Alloy and Temper Designation Systems for Aluminum
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 Aluminum Alloy
Wrought Products.
Current edition approved June 1, 2013May 1, 2020. Published July 2013June 2020. Originally approved in 1990. Last previous edition approved in 20062013 as
B807/B807M – 06.B807/B807M – 13. DOI: 10.1520/B0807_B0807M-13.10.1520/B0807_B0807M-20.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Available from Aluminum Association, Inc., 1525 Wilson Blvd., Suite 600,1400 Crystal Dr., Suite 430, Arlington, VA 22209,22202, http://www.aluminum.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
B807/B807M − 20
A
TABLE 1 Extrusion Billet or Log Temperature High Limit
Billet or Log Temperature
Alloy
Upper °F [Upper °C]
1050 565
6005A, 6105 6061, 6262, 6041, 565
6060, 6063, 6101, 1060 570
6463, 6360, 6560
6351, 6082, 1050 565
6066, 6070 1020 550
7004, 7005 1000 540
7029, 7046, 7116, 7129, 7146 1000 540
A
TABLE 1 Extrusion Billet or Log Temperature High Limit
Billet or Log Temperature
Alloy
Upper °F [Upper °C]
6060, 6063, 6101, 1060 570
6463, 6360, 6560
6005A, 6005, 6105, 6008, 6061, 1050 565
6262, 6064, 6351, 6082, 6040, 6041,
6042, 6064
6066, 6070, 6010, 6013 1020 550
7004, 7005, 7046, 7146, 7046A 1000 540
7003, 7108A, 7029, 7116, 7129 980 525
A
These upper limit temperatures avoidreduce the possibility of eutectic melting
due to overheating, and include a safety factormargin of approximately 25°F [15°C]
degrees.25 °F [15 °C].
3. Terminology
3.1 Definitions—Definitions:
3.1.1 Refer to Terminology B881 for definitions of product terms used in this specification.Refer to Terminology B881 for
definitions of product terms used in this specification.
3.1.2 extrudate, n—material exiting an extrusion die subject to further processing (quenching, stretching, cutting),cutting) to
become an extruded profile.
3.1.3 extrusion billet, n—solid or hollow form, commonly cylindrical, used as the final length of material charged into the
extrusion press cylinder, and is usually a cast product, but may be a wrought product or sintered from powder compact.
3.1.4 extrusion log, n—starting stock for extrusion billet. Extrusionbillet; extrusion log is usually produced in lengths from
which shorter extrusion billets are cut.
3.1.5 extrusion press solution heat treatment, n—heating an alloy to a suitable temperature and then extruding, while holding
for a sufficient time to allow one or more soluble constituents to enter into solid solution, where they are retained in a
supersaturated state after quenching.
3.1.6 furnace solution heat treatment, n—heating an alloy to a suitable temperature in a furnace and holding for a sufficient time
to allow one or more soluble constituents to enter into solid solution, where they are retained in a supersaturated state after
quenching.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 product class, n—a category of extruded product, consisting of the same alloy, temper and thickness, which can be
grouped for purposes of analysis of process qualification data and/or process monitoring data.
3.2.2 product type, n—a category of extruded product, consisting of the same alloy and product form (such as tube, pipe, rod,
bar, or profile) which can be grouped for analysis of process qualification and/or process monitoring.
3.2.3 remote temperature sensing system, n—a system of temperature measurement of a non-contact type usually including
either a single or multi-wavelength radiation sensing device.
4. Equipment
4.1 Aluminum alloy billets are preheated prior to being extruded as prescribed in 6.2. Usual heating methods include, but are
not limited to, induction, flame impingement, or forced air. Controls shall be adequate to ensure that the equipment can be operated
in a manner which precludes overheating of the billet or deleterious contamination of the billet by the furnace environment.
Induction equipment may require measurement of thermal gradients along the billet. Flame impingement devices require
assessment of thermocouple placement relative to burner location to avoid the possibility of non-uniform surface temperature.
Billet temperature shall be monitored and controlled to the extent that the extrusion billet is not to exceed the maximum
temperature shown in Table 1 prior to extrusion (see extrusion.Note 1).
B807/B807M − 20
NOTE 1—Some aspects of the metallurgical structure of the alloy after solution heat treatment are influenced by the thermal characteristics of the heating
equipment used, and the starting microstructure of the billet/log. Some heating equipment achieves very rapid temperature rise and may require the metal
to be soaked for a period to ensure that sufficient applicable alloying elements are taken into solid solution. This soaking stage may be eliminated if the
alloying elements are substantially in solid solution prior to charging the metal to the heating equipment (this being accomplished by sufficient prior
homogenization/cooling practices).
4.1.1 Automatic control and recording devices used to measure temperature at pertinent points in the heating equipment shall
be calibrated as specified in Section 5.
4.2 The extrusion press equipment and controls shall be adequate to ensure that billets are capable of being extruded in
accordance with the process requirements for the products being produced, as prescribedspecified in Section 6.
4.3 Equipment for quenching the extrudate may consist of, but is not limited to, water or water/glycol mixture in a standing
wave, quench tank, spray, pressurized water device, air/water fog or air blast, or combination thereof. Controls shall be adequate
to assure that the equipment is operated in a manner which achieves the required quench conditions as prescribed in 6.6 and in
Table 2.
5. Equipment Calibration and Standardization
5.1 Non-Contact Sensor System (Remote Sensing System) Calibration and System Accuracy Test: Instrument and sensor
calibration are defined in Table 3. System Accuracy Test (SAT) requirements are defined in Table 4.
5.1.1 Initial Calibration—Non-contact sensors shall be calibrated prior to initial use by an ISO 17025 or A2LA certified
laboratory. It may also be certified by the manufacturer if their process is traceable to NIST or national equivalent. Initial
calibration shall be within 66°F [63°C].
TABLE 2 Recommended Minimum Die Exit Temperature,
Temperature Entering Quench, and Cooling Rate in the Quench
A,B
Zone
Min Temp
Min Die Min Cooling
Entering
Alloy Exit Rate,
Quench
°F [°C] °F/min [°C/min]
°F [°C]
Min Temp Min Cooling
Min Die Exit
Alloy Entering Rate, °F/min
°F [°C]
Quench °F [°C] [°C/min]
6105 950 [510] 825 [440] 300 [165]
6005, 6105, 6005A 950 [510] 860 [460] 300 [165]
6005A 950 [510] 825 [440] 360 [200]
6061 950 [510] 860 [460] 600 [335]
6061, 6262, 6041, 6064 930 [500] 850 [455] 600 [335]
6262, 6040, 6041, 6064 930 [500] 860 [460] 600 [335]
6351, 6082 950 [510] 900 [480] 600 [335]
6060, 6063, 6101, 6360, 930 [500] 825 [440] 150 [85]
6463, 6560
6060, 6063, 6101, 6360, 930 [500] 840 [450] 150 [85]
6463, 6560
6066, 6070 970 [520] 910 [490] 900 [500]
6066, 6070, 6010, 6013 970 [520] 910 [490] 900 [500]
C
7004, 7005 750 to 1000 725 [385] 120 [65]
max/
[400 to 540]
max
C
7004, 7005 750 [400] 725 [385] 120 [65]
7029, 7046, 7116, 900 to 1000 750 [400] 600 [335]
7129, 7146 max/
[480 to 540
max]
C
7003, 7108A, 7029, 7046, 900 [480] 750 [400] 150 [85]
7046A, 7116,
7129, 7146
A
The cooling rate is defined as the average temperature drop per unit of time
when subjected to a constant cooling system from initial extrudate temperature,
down to 400°F [205°C],400 °F [205 °C], forced cooling allowed at a reduced rate
down to 350°F [175°C], and cooling continuing to ambient.350 °F [175 °C], and still
air cooling (faster is acceptable) continuing to ambient temperature.
B
These minimum temperatures and cooling rates may be altered when statistical
analysis of mechanical property test data substantiates that the material will meet
the tensile property requirements of 7.1 and other required material characteris-
tics.characteristics as required in this specification.
C
Air or air mist only cooling preferred, as higher cooling rates may degrade
corrosion performance.
B807/B807M − 20
TABLE 3 Instrument and Sensor Calibration
Calibration Accuracy
Device Maximum Calibration Period Used For Calibrated Against
Required
SAT; initial calibration of record,
Field Test Instrument within past 12 months ±1 °F [±0.6 °C] National Institute of Standards and
control or monitoring sensors
Technology (NIST) or equivalent
SAT; initial calibration of record,
Field Test Sensor within past 12 months ±2 °F [±1.1 °C] national standard
control or monitoring sensors
ISO17025, A2LA or instruments
manufacturer with a process
before first use (installation in measuring, recording or controlling
traceable to the National Institute
Non-contact Sensors equipment) and at least annual ±10 °F [5.5 °C] the temperature of thermal
of Standards and Technology
thereafter processing equipment
(NIST) or equivalent national
standard
TABLE 4 System Accuracy Test
Calibration Accuracy (Maximum SAT
Method Instrumentation Device SAT Frequency
Difference Allowed)
monthly
Probe non-contact ±15 °F [±8.3 °C]
[max 31 days]
weekly
Comparative Method ±10 °F [±5.5 °C]
Probe in conjunction with Comparative [max 7 days]
contact
Method quarterly
Probe ±10 °F [±5.5 °C]
[max 91 days]
5.1.2 System Accuracy Tests (SAT)—Non contact sensors must be compared weekly under operating conditions and temperature
to a contact thermocouple and test instrument touching the extrusion within 3 in. [75 mm] of the focus point of the non-contact
sensor (see Note 2). The non contact sensor must read within 62°F [61°C] of the contact pyrometry system; if not, the non-contact
sensor system must be adjusted to read within the stated tolerance or an offset in operation must be used to account for the variation
and may then be used for production.
5.2 Temperature Measuring System Accuracy TestTests (SAT) for Contact Systems (For Contact and Non-contact Sensors)—
(systems other than remote sensing systems)—The accuracy of temperature measuringSensors must be compared at the frequency
defined in Table 4 system(s) shall be tested under operating conditions at least once during each week that the facility is used. The
test should be made by inserting a calibrated test temperature sensing element to contact and temperature to a contact test sensor
and test instrument in contact with the surface being measured within 3 in. [75 mm] of the system’s sensing element and reading
the test temperature sensing element with a calibrated test potentiometer (seefocus point
...