ASTM B947-14

Standard Practice for Hot Rolling Mill Solution Heat Treatment for Aluminum Alloy Plate

ABSTRACT
This practice covers hot rolling solution heat treatment for aluminum alloy plate. Aluminum alloy ingots or rolling slabs are preheated prior to being hot rolled. Controls shall be adequate to ensure that the equipment is operated in a manner which precludes overheating of the ingot or rolling slab or deleterious contamination by the furnace environment. Metal temperature shall be monitored and controlled to not exceed the maximum temperature prescribed. Non-contact sensors shall be calibrated prior to initial use by an ISO 17025 or A2LA. Noncontact sensors must be compared weekly under operating conditions and temperature to the SAT test instrument/sensor. The accuracy of temperature measuring system(s) shall be tested under operating conditions at least once during each week that the facility is used. For continuous or batch furnaces, the type of survey and procedures for performing the survey shall be established and documented for each particular furnace or furnace type involved. The hot rolling mill solution heat treatment procedures are presented in details. The mechanical properties shall be determined in accordance with test method B557 or B557M. Tensile tests shall be representative of the thinnest and the thickest material to be heat treated; intermediate thickness samples shall be included when necessary to ensure proper production hot rolling mill solution heat treatment. Whenever any qualified equipment is changed or reworked, it shall be requalified unless it is known that the change or rework will not have a detrimental effect upon the properties of products.
SCOPE
1.1 This practice establishes the controls required for hot rolling mill solution heat treatment of the 6xxx series aluminum alloy plate in Table 1 when ASTM material specifications allow use of this process instead 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 as the preliminary step for the attainment of T651-type tempers (see ANSI H35.1/H35.1M). (A) These upper limit temperatures avoid the possibility of eutectic melting due to overheating, and include a safety margin of approximately 13°F [7°C].  
1.2 This practice applies only to hot rolling mill solution heat treatment of plate for the listed aluminum alloys. Precipitation hardening (aging), processing, and equipment calibration for aging shall meet the practice and requirements of Practice B918.  
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 nonconformance 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.

General Information

• Status: Historical
• Publication Date: 30-Nov-2014
• ICS: 77.150.10 - Aluminium products
• Technical Committee: B07 - Light Metals and Alloys
• Drafting Committee: B07.03 - Aluminum Alloy Wrought Products

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B947 − 14
Standard Practice for
Hot Rolling Mill Solution Heat Treatment for Aluminum Alloy
1
Plate
This standard is issued under the fixed designation B947; 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* B209 Specification for Aluminum and Aluminum-Alloy
Sheet and Plate
1.1 This practice establishes the controls required for hot
B209M Specification for Aluminum and Aluminum-Alloy
rolling mill solution heat treatment of the 6xxx series alumi-
Sheet and Plate (Metric)
num alloy plate in Table 1 whenASTM material specifications
B557 Test Methods for Tension Testing Wrought and Cast
allow use of this process instead of furnace solution heat
Aluminum- and Magnesium-Alloy Products
treatment. For the alloys listed in Table 1, this practice is an
B557M Test Methods for Tension Testing Wrought and Cast
alternate process to solution heat treatment in a furnace, such
Aluminum- and Magnesium-Alloy Products (Metric)
as specified in Practice B918 as the preliminary step for the
B881 Terminology Relating toAluminum- and Magnesium-
attainment of T651-type tempers (see ANSI H35.1/H35.1M).
Alloy Products
1.2 This practice applies only to hot rolling mill solution
B918 Practice for Heat Treatment of Wrought Aluminum
heat treatment of plate for the listed aluminum alloys. Precipi-
Alloys
tationhardening(aging),processing,andequipmentcalibration
E2281 Practice for Process and Measurement Capability
for aging shall meet the practice and requirements of Practice
Indices
B918.
ASTM MNL7 Manual on Presentation of Data and Control
Chart Analysis
1.3 The values stated in either SI units or inch-pound units
are to be regarded separately as standard. The values stated in 2.3 ANSI Standard:
each system may not be exact equivalents; therefore, each H35.1/H35.1M Alloy and Temper Designation Systems for
3
system shall be used independently of the other. Combining Aluminum
values from the two systems may result in nonconformance
2.4 European Standard:
with the standard.
EN 485-2 Aluminium and Aluminium Alloys—Sheet, Strip
4
And Plate—Part 2: Mechanical Properties
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions—For definitions of terms used in this test
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use. method, refer to Terminology B881.
3.2 Definitions of Terms Specific to This Standard:
2. Referenced Documents
3.2.1 rolling slab, n—semi-finished or intermediate product
2.1 The following documents of the issue in effect on the produced by hot rolling which is between ingot and plate form.
date of material purchase form a part of this specification to the
3.2.2 load sensor or load thermocouple, n—sensors that are
extent referenced herein:
attached to the production material or a representation of
2
2.2 ASTM Standards: production material, that supply temperature data of the pro-
duction material to process or test instrumentation.
1 4. Equipment
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
4.1 Aluminum alloy ingots or rolling slabs are preheated
Aluminum Alloy Wrought Products.
prior to being hot rolled as prescribed in 6.2. Controls shall be
Current edition approved Dec. 1, 2014. Published December 2014. Originally
approved in 2006. Last previous edition approved in 2013 as B947 – 06 (2013).
DOI: 10.1520/B0947-14.
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from the Aluminum Association, Inc., 1525 Wilson Blvd. Suite 600,
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Arlington, VA 22209, www.aluminum.org.
4
Standards volume information, refer to the standard’s Document Summary page on Available from European Committee for Standardization (CEN), 36 rue de
the ASTM website. Stassart, B-1050, Brussels, Belgium.
*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
1

---------------------- Page: 1 ----------------------
B947 − 14
A
TABLE 1 Ingot High Limit Temperature TABLE 3 Minimum Temperature Entering Quench and Cooling
A,B
Rate in Quench Zone
Ingot Upper Limit Temperature
Alloy
°F [°C]
Min Temp Entering Quench Min Cooling Rate
Alloy
°F [°C] °F/min [°C/min]
6061 1067 [575]
A 6061 870 [466] 600 [316]
...

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: B947 − 06 (Reapproved 2013) B947 − 14
Standard Practice for
Hot Rolling Mill Solution Heat Treatment for Aluminum Alloy
1
Plate
This standard is issued under the fixed designation B947; 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 Scope*
1.1 This practice establishes the controls required for hot rolling mill solution heat treatment of the 6xxx series aluminum alloy
plate in Table 1 when ASTM material specifications allow use of this process in lieu instead 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 as the preliminary step for the attainment of T651-type tempers (see ANSI H35.1).H35.1/H35.1M).
1.2 This practice applies only to hot rolling mill solution heat treatment of plate for the listed aluminum alloys. Precipitation
hardening (aging) processing(aging), processing, and equipment calibration for aging shall meet the practice and requirements of
Practice B918.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. 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 nonconformance 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.
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
2.2 ASTM Standards:
B209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate
B209M Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)
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)
B881 Terminology Relating to Aluminum- and Magnesium-Alloy Products
B918 Practice for Heat Treatment of Wrought Aluminum Alloys
E2281 Practice for Process and Measurement Capability Indices
ASTM MNL7 Manual on Presentation of Data and Control Chart Analysis
2.3 ANSI Standards:Standard:
3
H35.1H35.1/H35.1M Alloy and Temper Designation Systems for Aluminum
3
H35.1M Alloy and Temper Designation Systems for Aluminum [Metric]
2.4 European Standard:
4
EN 485-2 Aluminium and Aluminium Alloys—Sheet, Strip And Plate—Part 2: Mechanical Properties
1
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 May 1, 2013Dec. 1, 2014. Published May 2013December 2014. Originally approved in 2006. Last previous edition approved in 20062013 as
B947B947 – 06 (2013). – 06. DOI: 10.1520/B0947-06R13.10.1520/B0947-14.
2
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.
3
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.the Aluminum Association, Inc., 1525 Wilson Blvd. Suite
600, Arlington, VA 22209, www.aluminum.org.
4
Available from European Committee for Standardization (CEN), 36 rue de Stassart, B-1050, Brussels, Belgium.
*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
1

---------------------- Page: 1 ----------------------
B947 − 14
A
TABLE 1 Ingot High Limit Temperature
Ingot Upper Limit Temperature
Alloy
°F [°C]
6061 1050 [565]
A
TABLE 1 Ingot High Limit Temperature
Ingot Upper Limit Temperature
Alloy
°F [°C]
6061 1067 [575]
A
These upper limit temperatures avoid the possibility of eutectic melting due to
overheating, and include a safety factormargin of approximately 25°F [15°
...