1、STD-AECMA PREN 4277-ENGL 1778 10123LL 0014t1iA 155 I AECMA STANDARD NORME AECMA AECMA NORM prEN 4277 Edition P 1 May 1998 ICs: PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (32) 2 775 81 11 ENGLISH VERSION Aeros
2、pace series Aluminium alloy AL-P7 1 75- T73 Hand and die forgings a5125mm Srie arospatiale Alliage daluminium AL-P7175- T73 Pices forges et pices matrices aI125mm Luft- und Raumfahrt Aluminiumlegierung AL-P7 1 75- T73 Freiform- und Gesenkschmiedestcke a I 125 mm This “Aerospace Series“ Prestandard h
3、as been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subseq
4、uent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeabitity is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agre
5、ement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CED
6、EX Edition approved for publication Comments should be sent within six months after the date of publication to 1998-05-29 AECMA Gulledelle 94 B-1200 BRUXELLES C5 Chairman Mi Evetts I I aecma 1991 STD-AECMA PREN LI277-ENGL 1798 W LOL23LL 0014L47 071 W Page 3 prEN 4277: 1998 O Introduction This standa
7、rd is part of the series of EN metallic material standards for aerospace applications. The general organization of this series is described in EN 4258. This standard has been prepared in accordance with EN 4500-2. i Scope This standard specifies the requirements relating to: Aluminium alloy AL-P7175
8、- T73 Hand and die forgings a I125 mm for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed he
9、reafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2082-3 Aerospace series - Alum
10、inium alloy forging stock and forgings - Technical specification - Part 3: Pre-production and production forgings EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use 1) EN 4289 Aerospace series - Aluminium alloy
11、AL-P7175- - Forging stock 1) EN 4500-2 Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 2: Specific rules for aluminium, aluminium alloys and magnesium alloys 1) 1) Published as AECMA Prestandard at the date of publication of this standard Prev
12、ious page is blank si Fe Cu Mn Mg Cr - 2,l 0,18 0,15 0,20 2,O 0,lO 2,9 028 12 - - AI Others Each Total Zn Ti 5,l - - - 6,l 0,IO 0,05 0,15 Base Chemical Element Delivery condition code Use condition Heat treatment A U T73 T73 Delivery condition Delivery condition + 460 “C 5 es 480 “CI WQ 01 80 “C l)
13、+ 100 “C I 8s 120 “C I 6 h I t I 24 h + 170 “C 5 25rnm (J = 75 % Rp0,2 min. L 61 71 t=20d Fracture toughness (KI ,-.) -I See EN 2082-3 I 75a100 I 2 28 2 25 I 2 23 I External defects -I See EN 2082-3 Macrostructure Internal defects -I See EN 2082-3 Batch uniformity -I See EN 2082-3 7 Hardness 130 (ty
14、pical value) I HB I -I See EN 2082-3 Marking inspection 3imensional inspection -I See EN 2082-3 Notes 1) The use of quench additives or higher quenchant temperature shall be subject to agreement 2) If LT specimen cannot be cut, L specimen shall be used by agreement between between manufacturer and purchaser. manufacturer and purchaser. I Typical use STD. AECMA Page 6 prEN 4277: 1998 Product qualification PREN 4277-ENGL 1598 m 1012311 00L4b5Z b8b D Qualification programme to be agreed between manufacturer and purchaser
