SAE AS 6279A-2016 Standard Practice for Production Distribution and Procurement of Metal Stock.pdf

1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref

2、rom, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions.Copyright 2016 SAE InternationalAll rights reserved. No part of this publi

3、cation may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: +1 724-776-4970 (out

4、side USA)Fax: 724-776-0790Email: CustomerServicesae.orgSAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedbackon this Technical Report, please visithttp:/www.sae.org/technical/standards/AS6279AAEROSPACESTANDARDAS6279 REV. AIssued 2014-01Revised 2016-05Superseding AS6279Standard

5、Practice for Production, Distribution, and Procurement of Metal StockRATIONALEAS6279A incorporates updated definitions (2.2.1, 2.2.16, and 2.2.22), and editorial changes to address steels, corrosion-resisting alloys, and heat-resistant alloys in addition to titanium and titanium alloys.1. SCOPEThis

6、SAE Aerospace Standard (AS) establishes requirements applicable to metal stock that is ordered and produced in accordance with an Aerospace Material Specification (AMS). Topics include producer requirements, distributor requirements, size and grain orientation nomenclature, and purchaser ordering in

7、formation to distributors. Requirements of this document have been developed to address titanium and titanium alloys, carbon and alloy steels, and corrosion and heat-resistant alloys.2. REFERENCES2.1 Applicable DocumentsThe following publications form a part of this document to the extent specified

8、herein. The latest issue of SAE publications shall apply. The applicable issue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Not

9、hing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.2.1.1 SAE PublicationsAvailable from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside US

10、A), www.sae.org.ARP1917 Clarification of Terms Used in Aerospace Metals SpecificationsAS9100 Quality Management Systems - Requirements for Aviation, Space and Defense OrganizationsAS9120 Quality Management Systems - Requirements for Aviation, Space and Defense Distributors2.1.2 MMPDS PublicationsAva

11、ilable from Battelle 505 King Avenue Columbus, OH 43201, Tel. 614-424-6496, https:/www.mmpds.org/.Metallic Materials Properties Development and Standardization HandbookSAE INTERNATIONAL AS6279A Page 2 of 122.2 Definitions2.2.1 BAR, ROD, and WIREA solid shape of material (other than sheet, strip, or

12、plate) whose longitudinal orientation is the largest as-produced dimension and has been dimensionally reduced during the final hot working operation in at least two axes perpendicular to the longitudinal direction by pressing, extruding, forging, rolling, or drawing and finished in accordance with s

13、tandard industry practices to the producer-certified size and shape. Some shapes such as flat rounds may be finished by sizing in a single direction.2.2.2 BILLET (REFORGING STOCK, REROLLING STOCK, or EXTRUSION STOCK)A solid metal product that is intended for subsequent hot working into finished or s

14、emi-finished products.2.2.3 COGNIZANT ENGINEERING ORGANIZATION (CEO)The engineering organization responsible for the design of the part, or the designee of this engineering organization.2.2.4 DIE FORGINGForging shaped by working stock in a closed die.2.2.5 DISTRIBUTORFor purposes of this standard, a

15、 Distributor is a business that sells metal stock. The same business operates as a “Producer”when it performs the functions of a “Producer.”2.2.6 DRAWN SHAPEShape produced by deformation of metal drawn through a die.2.2.7 EXTRUDED SHAPEShape produced by deformation of metal pressed through a die.2.2

16、8 FORGINGProduct formed by heating and working stock between dies.2.2.9 GAUGEThe nominal thickness, diameter, hexagonal flat, or other applicable short transverse (ST) dimension of the material.2.2.10 HAND FORGING (aka, OPEN DIE FORGING)Forging shaped by working stock between open dies.2.2.11 INGOT

17、Cast metal intended and suitable for remelting or forming by hot or cold working.2.2.12 LONGITUDINAL (L)Parallel to the principal direction of grain flow in a worked metal.SAE INTERNATIONAL AS6279A Page 3 of 122.2.13 LONG-TRANSVERSE (LT)The direction of transverse grain orientation having the lesser

18、 amount of thermomechanical reduction (generally having the largest dimension, often called the “width”).2.2.14 MECHANICAL TUBEHeavy-walled typically cylindrical tube, intended primarily for the machining of circular rings, flanges, shafts, etc., having a wall thickness that is a substantial proport

19、ion of the outer diameter. Such tube is not normally used for the transmission of fluids, and parts made from it are usually machined all over. This product is sometimes known as “hollow bar.“2.2.15 METAL STOCKFor purposes of this standard, the term “metal stock” includes the following wrought produ

20、ct forms: bar, rod, wire, plate, sheet, strip, hand forgings, billet, extruded shapes, drawn shapes, and mechanical tube. It does not include castings, sintered powder metal parts, die forgings, seamless tubing, or welded tubing.2.2.16 PLATEDimensionally reduced during the final hot working operatio

21、n in the ST axis by rolling and finishing in accordance with standard industry practices to the producer-certified size. Cross-rolled plate is reduced in the ST direction by rolling in both the LT and L axes. Plate is further distinguished from sheet and other product forms by differences in thickne

22、ss and/or ratioof width to thickness; refer to ARP1917.2.2.17 PRODUCED SIZEThe nominal dimensions of the metal stock produced by mechanical working and finishing in accordance with industry standard practices.2.2.18 PRODUCERThe entity that takes responsibility for all processing and testing that res

23、ults in certification to the AMS material specification.2.2.19 PRODUCT FORMTerminology used to describe metal materials including, but not limited to: ingot, billet, forging stock, forging, bar, rod, wire, sheet, plate, strip, foil, casting, extrusion, and tubing.2.2.20 PURCHASERFor purposes of this

24、 standard, a Purchaser is a business that procures metal stock.2.2.21 ROLLEDMetal shaped by rolling on a mill.2.2.22 SHEET, STRIP, and FOILDimensionally reduced during the final hot working operation in the ST axis by rolling and finishing in accordance with standard industry practices to the produc

25、er-certified size. Cross-rolled sheet is reduced in the ST direction by rolling in both the LT and L axes. Sheet, strip, and foil are further distinguished by differences in thickness and/or width; refer to ARP1917.SAE INTERNATIONAL AS6279A Page 4 of 122.2.23 SHORT-TRANSVERSE (ST)The direction of tr

26、ansverse grain orientation having the highest amount of thermomechanical reduction (generally the smallest dimension, often called the “thickness”).2.2.24 TRANSVERSE (T)A direction of grain orientation that is perpendicular to longitudinal; applicable to round, square, hexagonal, and similar shapes.

27、 The transverse orientations of rectangular shapes are described as long transverse (LT) and short transverse (ST).3. REQUIREMENTS3.1 General Requirements3.1.1 Traceability3.1.1.1 Source of ProductionMaterial shall be traceable to source of production (e.g., producer name and heat number). This trac

28、eability shall be maintained throughout the metal production process (including melting of ingot, conversion to billet, production of metal stock, warehousing, and distribution). Material, regardless of form, that cannot be traced back to its producer shall not be certified as compliant to this AS.3

29、1.1.2 Product Size and Grain OrientationProducers, distributors, and purchasers shall maintain traceability to producers heat and lot, product size, and corresponding grain orientation (refer to 3.1.7).3.1.2 Responsibility for CertificationThe producer is the organization responsible for operations

30、 performed by the processing and testing entities, but it is not required that all or any processing and testing be performed in house by the producer. The producer takes responsibility that the material meets the specification. Whenever the material owner authorizes thermo-mechanical processing to

31、change the certified material gauge/condition/specification, they become the “Producer“ and are responsible for the testing and certification to that new dimension/condition/specification.3.1.2.1 The requirements of 3.2.4 apply when heat treatment is the only subsequent process performed (see 3.1.4,

32、 3.3.5, and 3.3.5.1).3.1.3 Revision of Material CertificationOnly the producer that created a material certification document can amend that document (e.g., amend a material certification to an alternate revision).3.1.4 Additional Heat TreatmentAfter product is certified to comply with an AMS, it is

33、 permitted to perform heat treatment that results in compliance with a different AMS material specification. Heat treatment processes shall be in accordance with the applicable AMS. All acceptance tests of the applicable material specification shall be performed in the final heat treat condition, ex

34、cept that the following are not required to be re-tested: composition, macrostructure, and ultrasonic. A report shall document processes and test results and shall certify compliance with the different AMS. The material owner shall coordinate the heat treatment, generate a new material certification

35、 and take responsibility for compliance. (Refer to 3.3.5.)SAE INTERNATIONAL AS6279A Page 5 of 123.1.4.1 Applicable to titanium and titanium alloys only: Hydrogen content shall be tested in the final heat treat condition after chemical processing (e.g., pickling, etching, chemical milling), hot-work

36、ing, or heat treatment of the product.3.1.5 Material Substitution3.1.5.1 Product form shall not be substituted, unless specifically authorized in writing by the cognizant engineering organization.3.1.5.2 Altering the produced and certified short transverse (ST) gauge (e.g., thickness, diameter) is c

37、onsidered a material substitution and is prohibited unless specifically authorized in the material specification or flowed down as a requirement by the cognizant engineering organization.3.1.5.3 Requirements applicable to produced size dimensions (2.2.17) versus supplied cut size dimensions are prov

38、ided in 3.3.6.3.1.6 Dimensional LimitsWhen product gauge (i.e., thickness, diameter, etc.) establishes the requirements for tensile properties or other properties required by technical requirements (e.g., Section 3) of the material specification, the size shall be determined by the nominal size cert

39、ified by the producer. 3.1.7 Grain Orientation Requirements3.1.7.1 Grain Nomenclature (e.g., ST, LT, and L) shall be assigned by the producer and maintained by distributors and subsequent purchasers to the applicable dimension (example: 2 inches ST x 3 inches LT x 120 inches L). For round, square, h

40、exagonal, and similar shapes, T and L are the applicable grain orientations. Other designations such as DIA, SQ, HEX, or similar are acceptable as equivalent to T.3.1.7.2 Product size and corresponding grain orientations shall be reported on certifications and reports (see Figures 5A, 5B, 5C, and 5D

41、). Dimensions shall be in inches, unless specified otherwise.3.2 Producer Requirements3.2.1 Documented PracticesThe producer shall ensure that each key operation is performed to a documented manufacturing plan in accordance with AS9100.3.2.1.1 Process control parameters are considered proprietary an

42、d may be assigned a code designation. Each variation in such parameters shall be assigned a modified code designation. Evidence of the process control shall be available for purchasers review/audit at the processors facility.3.2.2 Quality System AccreditationProducers shall be accredited to AS9100 o

43、r otherwise approved by the cognizant engineering organization.3.2.3 Inspection and Test RecordsProducer shall maintain records of inspections and tests for material certified as compliant to this AS. This data shall be available for purchasers review for a minimum of 5 years from date of shipment.S

44、AE INTERNATIONAL AS6279A Page 6 of 123.2.4 MMPDS ParticipationProducers shall identify themselves to MMPDS at a frequency not to exceed 5 years (refer to Figure 4). A copy of the email sent to the MMPDS secretariat is acceptable record of compliance with this requirement.3.3 Distributor Requirements

45、3.3.1 Quality System AccreditationDistributors shall be accredited to AS9100 or AS9120 or otherwise approved by the cognizant engineering organization.3.3.2 Each material certification received by a distributor shall be reviewed to verify that all required acceptance tests as specified in the materi

46、al specification and any additional requirements flowed down from the cognizant engineering organization are acceptable prior to shipment to the purchaser. Review of material certifications shall include examination for conformance to traceability requirements (refer to 3.1.1).3.3.3 Distributor Repo

47、rtThe distributor report shall include the items listed in Figure 1.3.3.4 Ordering Information for Purchasers to DistributorsIn addition to the details itemized in the applicable AMS material specification, the distributor shall request complete ordering information (refer to Figure 2) from the purc

48、haser.3.3.5 The material certification report that attests compliance to an AMS material specification shall not be altered and shall be created only by the producer (see 3.1.2). Distributors shall not create an AMS material certification report, unless the company is taking complete responsibility

49、as the material producer.3.3.5.1 ExceptionThe Distributor shall take responsibility as a producer when they coordinate heat treatment performed in accordance with 3.1.4.3.3.6 Distributor is permitted to perform and separately certify the following operations to satisfy requirements specified by the purchaser of the material:3.3.6.1 Distributor may straighten or level to produce straight or flat product from coil stock (i.e., produce str