1、ANSI H35.1 / H35.1(M)-2013Revision of H35.1/ H35.1(M)-2009American National StandardAlloy and Temper DesignationSystems for AluminumSecretariatThe Aluminum AssociationIncorporatedAmerican National StandardApproval of an American National Standard requires verification by ANSI that the requirements f
2、or due process, consensus, and other criteria for approval have been met by the standards developer.Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means
3、much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution.The use of American National Standards is completely voluntary; their existence does not in any respect preclud
4、e anyone, whether he has approved the standards or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards.The American National Standards Institute does not develop standards and will under no circumstances give an interpretation o
5、f any American Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretation should be addressed to the secretariat or sponsor whose name appears on the
6、 title page of this standard.CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of appr
7、oval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, New York, NY 10036.American National StandardAlloy and Temper Designation Systemsfor AluminumSecretariatThe Aluminum
8、Association, Inc.1525 Wilson Boulevard, Suite 600Arlington, VA 22209Approved November 7, 2013American National Standards InstituteANSI H35.1 / H35.1(M)-2013Revision of H35.1/ H35.1(M)-2009ACCREDITED STANDARDS COMMITTEE H35ONALUMINUM AND ALUMINUM ALLOYSOFFICERSTrevor J. Lewis, ChairmanP. Shafiee, Sec
9、retaryCOMMITTEE MEMBERSTHE ALUMINUM ASSOCIATIONTREVOR J. LEWIS, Rio Tinto Alcan, Cleveland, OhioAEROSPACE INDUSTRIES ASSOCIATION OF AMERICAJAMES R. RENTSCH, Aerospace Industries Association of America, Arlington, VirginiaALUMINUM EXTRUDERS COUNCILJOHN MURPHY, Hydro Aluminum North America, Saint Augu
10、stine, FloridaAMERICAN FOUNDRY SOCIETYSTEVE ROBISON, American Foundry Society, Schaumburg, IllinoisASTM INTERNATIONALBRIAN P. COCHRAN, ASTM B07, Wabash, IndianaMETAL SERVICE CENTER INSTITUTEJULIE S. THANE, Metal Service Center Institute, Chicago, IllinoisNATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION
11、VINCE BACLAWSKI, National Electrical Manufacturers Association, Rosslyn, VirginiaSAE INTERNATIONAL (SOCIETY OF AUTOMOTIVE ENGINEERS)ROBERT STEFFEN, Raytheon Precision Manufacturing, Dallas, TexasU.S. DEPARTMENT OF COMMERCEFRANK W. GAYLE, National Institute of Standards and Technology, Gaithersburg,
12、MarylandU.S. DEPARTMENT OF THE NAVYCARL LEVANDUSKY, Naval Air Warfare Center Aircraft Division, Lakehurst, New JerseyU.S. DEPARTMENT OF THE AIRFORCELARRY PERKINS, US Airforce Systems Support Division, Dayton, Ohio2ANSI H35.1 / H35.1(M)-2013ForewordThis Standard is a revision of ANSI Standard H35.1/H
13、35.1(M)-2009 Alloy and Temper Designation Systems for Aluminum.Initially, the Standard consisted of only the alloy designation system for wrought aluminum developed by The Aluminum Association and adopted by that organization in 1954. A booklet describing the system was issued in July 1954 and was a
14、pproved under the existing standards procedure of the American Standards Association as American Standard H35.1-1957.All major producers of wrought aluminum alloys in the United States adopted the Aluminum Association Alloy Designation System for Wrought Aluminum on October 1, 1954. A Military Stand
15、ard (MIL-STD-192) covering the new system was issued in October 1955. The Society of Automotive Engineers began using the designations in 1956, and the American Society for Testing and Materials in 1958.The Standard was reissued in 1962 to add the temper designation system that had been in effect in
16、 the United States since 1948. Subsequently, MIL-STD-192 was cancelled, since it was the equivalent to American Standard H35.1-1962.This Standard was originally developed and subsequently revised using the “canvas” method and published under the proprietary sponsorship of the Aluminum Association. A
17、t the request of the Aluminum Association, the estab-lishment of Standards Committee H35 on Aluminum Alloys was authorized by the American National Standards Institute on 17 February 1970, with the Association serving as Secretariat.The 1971 revision of ANSI H35.1 was the first revision developed by
18、 Standards Committee H35, under the “Standards Committee” procedures, and the 1972, 1975, 1978, and 1982 revisions were developed under the auspices of that Committee.Standards Committee H35 was transferred to an Accredited Standards Committee on December 28, 1983, and this revision was developed un
19、der the Accredited Standards Committee method.This latest (2013) revision consists of modification to the wrought alloy designation system and elimination of the requirement that a variation is from another country; relocation of footnote references for clarity; and addition of a footnote to require
20、 individual limits for combination of elements in excess of 0.10%. Additionally, a definition for O2 temper designation has been added as a reserved temper to demonstrate response to annealing.3ANSI H35.1 / H35.1(M)-20131. ScopeThis standard provides systems for designating wrought aluminum and wrou
21、ght aluminum alloys, aluminum and aluminum alloys in the form of cast ings and foundry ingot, and the tempers in which aluminum and aluminum alloy wrought products and aluminum alloy castings are pro duced. Specific limits for chemical compositions and for mechanical and physical properties to which
22、 conformance is required are provided by applicable product standards.NOTE: A numerical designation assigned in conformance with this stan dard should only be used to indicate an aluminum or an aluminum alloy having chemical composi tion limits identical to those registered with The Alumi num Associ
23、ation and, for wrought aluminum and wrought aluminum alloys, with the signatories of the Declaration of Accord on an International Alloy Designation System for Wrought Aluminum and Wrought Aluminum Alloys.2. Wrought Aluminum and Aluminum Alloy Designation System Q W E R qA system of four-digit numer
24、ical designations is used to identify wrought aluminum and wrought aluminum alloys. The first digit indicates the alloy group as follows:Aluminum, 99.00 percent and greater . 1xxxAluminum alloys grouped by major alloying elementsCopper . 2xxxManganese 3xxxSilicon 4xxxMagnesium 5xxxMagnesium and sili
25、con. 6xxxZinc 7xxxOther element 8xxxUnused series 9xxxQ Chemical composition limits and designations conforming to this standard for wrought aluminum and wrought aluminum alloys, and aluminum and aluminum alloy castings and foundry ingot may be registered with The Aluminum Association provided: (1)
26、the aluminum or aluminum alloy is offered for sale, (2) the complete chemical composition limits are registered, and (3) the composition is significantly different from that of any aluminum or aluminum alloy for which a numerical designation already has been assigned.W For codification purposes an a
27、lloying element is any element that is intentionally added for any purpose other than grain refinement and for which minimum and maximum limits are specified.E Standard limits for alloying elements and impurities are expressed to the following places:Less than 0.001 percent . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . . . . . 0.000X0.001 but less than 0.01 percent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.00X 0.01 but less than 0.10 percent Unalloyed aluminum made by a refining process . . . . . . . . 0.0XXAlloys and unalloyed aluminum not made by a refining
29、process . . . . . . . . . .0.0X0.10 through 0.55 percent . . . . . . . . . 0.XX(It is customary to express limits of 0.30 percent through 0.55 percentas 0.X0 or 0.X5)Over 0.55 percent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.X, X.X, etc.(except that combined Si + Fe
30、limits for 1xxx designations must be expressed as 0.XX or 1.XX)R Standard limits for alloying elements and impurities are expressed in the following sequence: Silicon; Iron; Copper; Manganese; Magnesium; Chro-mium; Nickel; Zinc; Titanium (see Note 1); Other (see Note 2) Elements, Each; Other (see No
31、te 2) Elements, Total; Aluminum (see Note 3).The designation assigned shall be in the 1xxx group whenever the minimum aluminum content is specified as 99.00 percent or higher. The alloy designation in the 2xxx through 8xxx groups is determined by the alloy ing element (Mg2Si for 6xxx alloys) present
32、 in the greatest mean percentage, except in cases in which the alloy being registered qualifies as a modification or variation of a previously registered alloy. If the greatest mean percentage is common to more than one alloying element, choice of group shall be in order of group sequence Cu, Mn, Si
33、, Mg, Mg2Si, Zn or others.The last two digits identify the aluminum alloy or indicate the aluminum purity. The second digit indi cates modifica-tions of the original alloy or impurity limits.2.1 AluminumIn the 1xxx group for minimum aluminum purities of 99.00 percent and greater, the last two of the
34、 four digits in the designation indicate the minimum alu minum percent age T. These digits are the same as the two digits to the right of the decimal point in the minimum aluminum percentage when it is expressed to the nearest 0.01 percent. The second digit in the designation indicates modifications
35、 in impurity limits or alloying elements. If the second digit in the designation is zero, it indi cates unalloyed aluminum having natural impurity limits; integers 1 through 9, which are assigned con secutively as needed, indicate special control of one or more individual impurities or alloying elem
36、ents.Note 1Additional specified elements having limits are inserted in alphabetical order according to their chemical symbols between Titanium and Other Elements, Each, or are listed in footnotes.Note 2“Other” includes listed elements for which no specific limit is shown as well as unlisted metallic
37、 elements. The producer may analyze samples for trace elements not specified in the registration or specification. However, such analysis is not required and may not cover all metallic “other” elements. Should any analysis by the producer or the purchaser establish that an “other” element exceeds th
38、e limit of “Each” or that the aggregate of several “other” elements exceeds the limit of “Total”, the material shall be considered non-conforming.Note 3Aluminum is specified as minimum for unalloyed aluminum, and as a remainder for aluminum alloys.T The aluminum content for unalloyed aluminum made b
39、y a refining process is the difference between 100.00 percent and the sum of all other metallic elements together with silicon present in amounts of 0.0010 percent or more each, expressed to the third decimal before determining the sum, which is rounded to the second decimal before subtracting; for
40、unalloyed aluminum not made by a refining process it is the difference between 100.00 percent and the sum of all other analyzed metallic elements together with silicon present in amounts of 0.010 percent or more each, expressed to the second decimal before determining the sum. For unalloyed aluminum
41、 made by a refining process, when the specified maximum limit is 0.0XX, an observed value or a calculated value greater than 0.0005 but less than 0.0010% is rounded off and shown as “less than 0.001”; for alloys and unalloyed aluminum not made by a refining process, when the specified maximum limit
42、is 0.XX, an observed value or a calculated value greater than 0.005 but less than 0.010% is rounded off and shown as “less than 0.01”.qIndividual element limits (i.e. a maximum limit or a range) are required for elements having a combined maximum limit in excess of 0.10%. Individual element limits a
43、re not required for elements having a combined maximum limit of 0.10% or less.Alloy and Temper Designation Systems for Aluminum (ANSI H35.1/H35.1(M)-2013)4ANSI H35.1 / H35.1(M)-20132.2 Aluminum AlloysIn the 2xxx through 8xxx alloy groups the last two of the four digits in the designation have no spe
44、cial sig nificance but serve only to identify the different alu minum alloys in the group. The second digit in the alloy designation indicates original alloy and alloy modifications. If the second digit in the designation is zero, it indicates the original alloy; integers 1 through 9, which are as s
45、igned consecutively, indicate alloy modifications. A modification of the original alloy is limited to any one or a combination of the following:(a) Change of not more than the following amounts in arithmetic mean of the limits for an individual al loying element or combination of elements expressed
46、as an alloying element or both.Arithmetic Mean ofLimits for Alloying MaximumElements in Original Alloy ChangeUp thru 1.0 percent 0.15Over 1.0 thru 2.0 percent . 0.20Over 2.0 thru 3.0 percent . 0.25Over 3.0 thru 4.0 percent . 0.30Over 4.0 thru 5.0 percent . 0.35Over 5.0 thru 6.0 percent . 0.40Over 6.
47、0 percent 0.50To determine compliance when maximum and mini mum limits are specified for a combination of two or more elements in one alloy composition, the arithmetic mean of such a combination is compared to the sum of the mean values of the same individual elements, or any combina tion thereof, i
48、n another alloy compo sition.(b) Addition or deletion of not more than one alloy ing element with limits having an arithmetic mean of not more than 0.30 percent or addition or deletion of not more than one combination of elements ex pressed as an alloying element with limits having a combined arithm
49、etic mean of not more than 0.40 per cent.(c) Substitution of one alloying element for another element serving the same purpose.(d) Change in limits for impurities expressed singly or as a combination.(e) Change in limits for grain refining elements.(f ) Maximum iron or silicon limits of 0.12 percent and 0.10 percent, or less, respectively, reflecting use of high purity base metal.An alloy shall not be registered as a modification if it meets the requirements for a variation.2.3 Experimental AlloysExperimental alloys are also designated in accor dance with this system, but the
