1、ANSI H35.1 / H35.1(M)-2017 Revision of H35.1/ H35.1(M)-2013 American National Standard Alloy and Temper Designation Systems for Aluminum Secretariat The Aluminum AssociationIncorporatedAmerican National Standard Approval of an American National Standard requires verification by the American National
2、 Standards Institute (ANSI) that the requirements for 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 materia
3、lly affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be consid- ered, and that a concerted effort be made toward their resolution. The use of American National Standards is completely vol
4、untary; their existence does not in any respect pre- clude 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 standard
5、s and will under no circumstances give an interpretation of 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 address
6、ed to the secretariat or sponsor whose name appears on the title page of this standard. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The proce- dures of the American National Standards Institute require that action be taken to reaffirm, revise, or withdraw
7、 this standard no later than five years from the date of approval. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Insti- tute, 25 West 43rd Street, New York, NY 10036.American National Standard Alloy an
8、d T emper Designation Systems for Aluminum Secretariat The Aluminum Association, Inc. 1400 Crystal Drive, Suite 430 Arlington, VA 22202 Approved May 12, 2017 American National Standards Institute ANSI H35.1 / H35.1(M)-2017 Revision of H35.1/ H35.1(M)-2013 Copyright 2017, The Aluminum Association, In
9、c. All rights reserved. Unauthorized reproduction, distribution, creation of derivative works, and/or sale of this work is prohibited.ACCREDITED STANDARDS COMMITTEE H35 ON ALUMINUM AND ALUMINUM ALLOYS OFFICERS Francine Bovard, Chairman John Weritz, Secretary COMMITTEE MEMBERS THE ALUMINUM ASSOCIATIO
10、NFRANCINE BOVARD, Arconic, New Kensington, Pennsylvania AEROSPACE INDUSTRIES ASSOCIATION OF AMERICAJAMES R. RENTSCH, Aerospace Industries Association of America, Arlington, Virginia ALUMINUM EXTRUDERS COUNCILOLIVIER GABIS, Wagstaff, Saint Clairsville, Ohio AMERICAN FOUNDRY SOCIETYSTEVE ROBISON, Amer
11、ican Foundry Society, Schaumburg, Illinois ASTM INTERNATIONALBRIAN P . COCHRAN, ASTM B07, Wabash, Indiana METAL SERVICE CENTER INSTITUTEJULIE S. THANE, Metal Service Center Institute, Chicago, Illinois NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATIONVINCE BACLAWSKI, National Electrical Manufacturers As
12、sociation, Arlington, Virginia SAE INTERNATIONAL (SOCIETY OF AUTOMOTIVE ENGINEERS)ROBERT STEFFEN, Raytheon Precision Manufacturing, Dallas, Texas U.S. DEPARTMENT OF COMMERCEFRANK W. GAYLE, National Institute of Standards and Technology, Gaithersburg, Maryland U.S. DEPARTMENT OF THE NAVYCARL LEVANDUS
13、KY, Naval Air Warfare Center Aircraft Division, Lakehurst, New Jersey U.S. DEPARTMENT OF THE AIRFORCEJEFFREY CALCATERRA, US Airforce Systems Support Division, Dayton, Ohio 2 ANSI H35.1 / H35.1(M)-2017 ForewordThis Standard is a revision of ANSI Standard H35.1/H35.1(M)-2013 Alloy and Temper Designati
14、on Systems for Aluminum.Initially, the Standard consisted of only the alloy designation system for wrought aluminum devel- oped by The Aluminum Association and adopted by that organization in 1954. A booklet describing the system was issued in July 1954 and was approved under the existing standards
15、procedure of the American Standards Association as American Standard H35.1-1957.All major pr oducers of wr ought aluminum allo ys in the United States adopted the Aluminum Association Alloy Designation System for Wrought Aluminum on October 1, 1954. A Military Standard (MIL- STD-192) covering the ne
16、w 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 the United States since 1948. Su
17、bsequently, 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. At the request of the Aluminum Ass
18、ociation, the establishment 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 r e vision of ANSI H35.1 was the first r e vision de v eloped b y Standar ds Committee H35,
19、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 under the Accredited Standar
20、ds Committee method.The latest 2017 edition includes r e visions to the definitions of basic H and T tempers, discontinu- ation of the practice of assigning experimental alloy designations, a revision to the variation requirements, r e visions to foo tnotes 4 and 5 and clarification in section 3.2.1
21、. These changes ar e indicated b y highlights in the text. ANSI H35.1 / H35.1(M)-2017 1. Scope This standard provides systems for designating wrought aluminum and wrought aluminum alloys, aluminum and aluminum alloys in the form of cast- ings and foundry ingot, and the tempers in which aluminum and
22、aluminum alloy wrought products and aluminum allo y castings ar e pr o duced. Specific limits for chemical compositions and for mechanical and physical properties to which conformance is re- quired are provided by applicable product standards. NOTE: A numerical designation assigned in conformance wi
23、th 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 Association and, for wrought aluminum and wrought aluminum alloys, with the signatories of the Declaration of Accord on an Internati
24、onal Alloy Designation System for Wrought Aluminum and Wrought Aluminum Alloys. 2. Wrought Aluminum and Aluminum Alloy Designation System 1 2 3 4 13 A system of four-digit numerical designations is used to identify wrought aluminum and wrought alu- minum allo ys. The first digit indicates the allo y
25、 gr oup as follows: Aluminum, 99.00 percent and greater 1xxx Aluminum alloys grouped by major alloying elements Copper 2xxx Manganese 3xxx Silicon 4xxx Magnesium 5xxx Magnesium and silicon 6xxx Zinc 7xxx Other element 8xxx Unused series 9xxx 1 Chemical composition limits and designations conforming
26、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) the aluminum or aluminum alloy is offered for sale, (2) the complete chemical composition limits are registered,
27、 and (3) the composition is significantly different from that of any aluminum or aluminum alloy for which a numerical designation already has been assigned. 2 For codification purposes an alloying element is any element that is in tentionally added for any purpose other than grain refinement and for
28、 which minimum and maximum limits are specified. 3 Standard limits for alloying elements and impurities are expressed to the following places:Less than 0.001 percent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.000X0.001 but less than 0.01 percent . . . . . . . . . . . .
29、 . . . . . . . . . . . . . . . 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 process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.0X0.10 throug
30、h 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 comb
31、ined Si + Fe limits for 1xxx designations must be expressed as 0.XX or 1.XX) 4 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;
32、 Other (see Note 2) Elements, Total; Aluminum (see Note 3). 5 The aluminum content for unalloyed aluminum made by 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 The designation assigned shall b
33、e in the 1xxx group whenever the minimum aluminum content is speci- fi ed as 99. 00 per cent or higher . The allo y designation in the 2xxx through 8xxx groups is determined by the alloy ing element (Mg 2 Si for 6xxx alloys) present in the greatest mean percentage, except in cases in which the allo
34、y being r egister ed qualifies as a modi- ficatio n o r v ariatio n o f a p r e vio u sly r eg ister ed allo y . 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, Mg, Mg 2 Si, Zn or others. The last two digits
35、 identify the aluminum alloy or indicate the aluminum purity. The second digit indi- cat es modifi ca tions of the original allo y or impurity limits. 2.1 Aluminum In the 1xxx group for minimum aluminum purities of 99.00 percent and greater, the last two of the four dig its in the designation indica
36、te the minimum a lu mi num pe r c e nt a ge 5 . 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 in impurity limits or alloyin
37、g 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 elements. Note 1Additional specifi
38、ed elements having limits are inserted in alpha betical 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 elements. “Total” is the s
39、um of those “Others” metallic elements 0.010 or more each, expressed to the second decimal before determining the sum. The producer may analyze samples for trace elements not specified in the registration or specification. How ever, such analysis is not required and may not cover all metallic “other
40、” elements. Should any analysis by the producer or the purchaser establish that an “other” element exceeds the 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 u
41、nalloyed aluminum, and as a remainder for aluminum alloys. 5 (Continued) percent or more each, expressed to the third decimal before determining the sum, which is rounded to the second decimal before subtracting; for unalloyed aluminum not made by a refining process it is the difference between 100.
42、00 percent and the sum of all other analyzed metallic elements together with silicon present in amounts of 0.010 per cent or more each, expressed to the second decimal before determining the sum. For unalloyed aluminum made by a refining process, when the specified maximum limit is 0.0XX, an observe
43、d value or a calculated val ue 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 is 0.XX, an observed value or a calculated value greater than 0.005 but less than
44、 0.010% is rounded off and shown as “less than 0.01”. 13 Individual 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 are not required for elements having a combined maximum limit of 0.10% or less.
45、 Alloy and Temper Designation Systems for Aluminum (ANSI H35.1/H35.1(M)-2017) 4 ANSI H35.1 / H35.1(M)-2017 2.2 Aluminum Alloys In the 2xxx through 8xxx alloy groups the last two of the four digits in the designation have no special sig nifi cance but ser v e only to identify the diff er ent alu minu
46、m 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 signed consecutively, indicate allo y modifications. A modification o
47、f 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 as an alloying element or both.Arithmetic Mean ofLimits for Alloyi
48、ng Maximum Elements in Original Alloy Change Up thru 1.0 percent .0.15 Over 1.0 thru 2.0 percent.0.20 Over 2.0 thru 3.0 percent.0.25 Over 3.0 thru 4.0 percent.0.30 Over 4.0 thru 5.0 percent.0.35 Over 5.0 thru 6.0 percent.0.40 Over 6.0 percent 0.50 To determine compliance when maximum and mini- mum l
49、imits ar e specifie d for a combination of two or mor e 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, in 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 arithmetic mean of not more than 0.40 per ce
