1、 CEN EN858b-2 94 D 3404589 0073742 T73 = BRITISH STANDARD Aluminium and aluminium alloys - Forgings Part 2. Mechanical properties and additional property requirements The European Standard EN 586-2 : 1994 has the status of a British Standard Aluminium et alliages daluminium - Pieces forges - Partie
2、2: Caractristiques mcaniques et autres caracristiques exiges Aluminium und Aluminiumlegierungen - Schmiedestcke - Teil 2: Mechanische Eigenschaften und zustzliche Eigenschaftsanforderungen BS EN 586-2 : 1994 CEN ENx58b-2 94 W 3404589 0073743 90T BS EN 586-2 : 1994 under the authority of the effect o
3、n 15 October 1994 0 BSI 1994 Standards Board and comes into Amd. No. Date The following BSI references relate to the work on this standard: Committee reference NFMi35 Draft for comment 91147874 DC ISBN O 580 23128 3 Cooperating organizations lkxt affected The European Committee for Standardization (
4、CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oes
5、terreichisches Normungsinstitut Institut belge de normalisation Dansk Standard Suomen Standardisoimisliito, r. y. Association francaise de normalisation Deutsches Institut fr Normung e.V. Hellenic Organization for Standardization Ethnological Institute of Iceland National Standards Authority of Irel
6、and Ente Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Normaiisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin Standardiseringskommissionen i Sverige Association suisse de normalisation
7、British Standards Institution CEN EN*Sb-2 94 m 3404589 0073744 84b m BS EN 586-2 : 1994 Contents Cooperating organizations National foreword Page Inside front cover i Foreword 2 Text of EN 586-2 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative
8、) Cross-references Inside back cover National foreword This Part of BS EN 586 has been prepared under the direction of the Non-ferrous Metals Standards Policy Committee and is the English language version of EN 586-2 : 1994 Aluminium and aluminium alloys - Forgings - part 2 Mechanical properties and
9、 additional property requirements. This Part of BS EN 586, together with BS EN 586-1: Aluminium and aluminium alloys - Forgings - Part 1 lchnical conditions for inspection and delivery, will supersede parts of BS 1472 : 1972 Spe immersion in a 3,5 % by mass sodium chloride solution; transverse direc
10、tion with a stress level of 75 % of the specified proof stress; - no stress corrosion related rupture shall be observed after a minimum exposure time of 20 days. - exposure shall be carried out by alternate - test pieces shall be stressed in the short The method of stressing (bending, uniaxial loadi
11、ng, C-ring, etc.), the shape and dimensions of the test pieces and the frequency of the test are left to the discretion of the supplier, who shall maintain records of all lots so tested and make them available for examination at the suppliers facility for not less than five years. 8 Additional prope
12、rties 8.1 In addition to or in substitution for the determination of mechanical properties, testing to establish the electrical conductivity and hardness properties of forgings shall be performed when agreed between the purchaser and the supplier and stated on the order or drawing. 8.2 Such testing
13、shall be carried out as a measure of batch uniformity and shall be applied to forgings on completion of all processing and prior to delivery to the purchaser. Page 7 EN 586-2 : 1994 8.3 Batch uniformity testing shall be undertaken using one of the following methods selected by the supplier: a) each
14、forging in the inspection lot shall be electrical conductivity tested. A forging of the lowest and highest electrical conductivity value shall be hardness tested; b) each forging in the inspection lot shall be hardness tested. A forging of the lowest and highest hardness value shall be electrical co
15、nductivity tested. 8.4 Electrical conductivity measurement shall be in accordance with EN 2004-1. The values obtained shall not exceed the following limits of variation: a) I 1,5 MS/m per forging; b) 2,5 MS/m per inspection lot. Actual readings obtained on electrical conductivity testing shall norma
16、lly meet the values stated in table 8. Unless otherwise indicated on the drawing, measurements for electrical conductivity shall be carried out at a minimum of two locations selected by the supplier. 8.5 Hardness testing shall be in accordance with IS0 6506 : 1981 (Brinell test). Alternative methods
17、 for hardness testing e.g. Vickers hardness testing in accordance with IS0 6507-1 : 1982 or Rockwell hardness testing in accordance with IS0 6508 : 1986 may be utilized subject to agreement between purchaser and supplier. The values obtained shall demonstrate that forgings have been processed in a u
18、niform manner. Actual readings obtained on Brinell hardness testing shall normally meet the values stated in table 8. Unless otherwise indicated on the drawing the location(s) for hardness test shall be selected by the supplier. CEN ENx5b-2 94 m 3404589 O073752 912 m Page 8 EN 586-2 : 1994 Annex A (
19、normative) Rules for rounding In recording test results, the number representing the result of a test to determine a given property shall be expressed to the same number of decimal places as the corresponding number in this standard. The following rounding ndes shall be used for determination of com
20、pliance with this standard: a) When the figure immediately after the last figure to be retained is less than 5, the last figure to be retained remains unchanged; b) When the figure immediately after the last figure to be retained is greater than 5, or equal to 5 and followed by at least one figure o
21、ther than zero, the last figure to be retained is increased by one; c) When the figure immediately after the last figure to be retained is equal to 5 and followed by zeros only, the last figure to be retained remains unchanged if even and is increased by one if odd. CEN EN858b-2 9Y W 3Y04589 0073753
22、 857 W BS EN 586-2 : 1994 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the Non-ferrous Metals Standards Policy Committee (NFM/-) to Technical Committee NFM/35, upon which the following bodies wer
23、e represented: Aluminium Federation Aluminium Stockholders Association London Metal Exchange Magnesium Industry Council The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Association of British Welded Aluminium Tube Makers Association of Lig
24、ht Alloy Refiners Limited Institution of Structural Engineers Metal Packaging Manufacutrers Association National annex NB (informative) Cross-references Publication referred to EN 515 EN 573-3 EN 586-1) EN 2004-1 EN 10002-1 IS0 6508 Corresponding British Standard BS EN 515 : 1993 Aluminium and alumi
25、nium alloys - Wrought products - Tmper designations BS EN 573 Aluminium and aluminium alloys - Chemical composition and form of wrought products Part 3: Chemical composition BS EN 586 Aluminium and aluminium alloys - Forgings Part 1: Technical conditions for inspection and delivery BS EN 2004 Test m
26、ethods for aluminium and aluminium alloy products Part 1 : 1993 Determination of electrical conductivity of wrought aluminium alloys BS EN 10002 Bnsile testing of metallic materials Part 1 : 1990 Method of test at ambient temperature BS 891 : 1989 Methods for hardness test (Rockwell method) andsfor
27、verpicution qf hardness testing machines (Rockwell method) Previous page is blank ) In preparation. When published this will be adopted as the corresponding British Standard listed above BS EN 586-2 : 1994 BSI 389 Chiswick High Road London W4 4AL 9410- 6- 0.7k- PF CEN EN*58b-2 94 3404589 0073754 795
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