1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 14 March 2003 prEN 2732 Edition P 2 March 2003 Comments should be sent within six months after the date of publication to AECMA-STAN ICs: Descriptors: ENGLISH VERSION Supersedes issue P 1 April 1986 Aerospace series Magnesium all
2、oy MG446001 T6 Chill casting Srie arospatiale Alliage de magnsium MG446001 T6 Produit coul en coquille Luft- und Raumfahrt Magnesiumlegierung MG446001 T6 Kokillengustck This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace
3、 Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be ch
4、anged to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) fo
5、r formal vote. Metallic Material Domain I I Copyright 2003 O by AECMA-STA1 Page 2 prEN 2732: 2003 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANS Metallic Material Domain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined
6、in AECMA- STANS General Process Manual, this standard has received approval for Publication. Page 3 prEN 2732: 2003 O Introduction This standard 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 s
7、tandard has been prepared in accordance with EN 4500-2. 1 Scope This standard specifies the requirements relating to: Magnesium alloy MG-C46001 T6 Chill casting for aerospace application. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other p
8、ublications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. 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 rev
9、ision. For undated references the latest edition of the publication referred to applies. EN 2076-3, Aerospace series - Aluminium and magnesium alloy ingots and castings - Technical specification - Part 3: Pre-production and production castings EN 4258, Aerospace series - Metallic materials - General
10、 organization of standardization - Links between types of EN standards and their use 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 Pre
11、standard at the date of publication of this standard Page 4 prEN 2732: 2003 Test piece(s) Heat treatment Dimensions concerned mm Form Chill casting Method of production Chill casting Limit dimension(s) mm - Technical specification EN 2076-3 See EN 2076-3. See EN 2076-3. See EN 2076-3. Use condition.
12、 Use condition. Use condition. See EN 2076-3. as20 as20 I T6 I 3.1 Delivery condition I Thickness of cladding on each face Heat treatment % - - - 510 “c 545 “c14 h t 8 h IWQ 60 “c 80 “c + 195 “c s e s 205 “c 18 h s t s 16 h /Air cool Reductionofarea I U I 3.2 I Delivery condition code Z % - I T6 I 7
13、 I Use condition Hardness Shear strength R, MPa Bending k- I Delivery condition I I Heat treatment - - - - 3.1 3.2 3.3 9 10 11 12 13 14 15 16 17 18 19 - - - - - - - - - - - - - - Characteristics - I - I - I Direction of test piece Ambient I Ambient I Temperature I I “C I Ambient 2 175 I 2 140 I Proo
14、f stress I Rp0,2 I MPa I 2 185 2 240 I 2 200 I Strength I R, I MPal 2 240 Elongation I A I % I 22 I 21 I 22 - I Impact strength - I Temperature I I “C I I Time Ihl - Elongation a% - Rupture stress OR MPa - Elongation at A % - rupture abc Notes (see line 98) Page 5 prEN 2732: 2003 Hardness ixternal d
15、efects 70 (Typical value) A 20 per batch HB nternal defects 3atch uniformity Marking inspection Iimensional inspection Votes rypical use See EN 2076-3. See EN 2076-3. See EN 2076-3. See EN 2076-3. See EN 2076-3. a Similar to alloys MSR-B and QE22A Unless otherwise advised by the purchaser, the manuf
16、acturer may, at his discretion, and especially to minimize distortion in thin sections, alternatively air cool to ambient temperature from the solution heat treatment temperature or use water with quench additives (polymer quench) at 6% 30 OC. The tensile properties stated may not be consistently achievable in all parts of all castings. Any differing requirements stated on the drawing shall take precedence over those of this material standard. 100 See EN 2076-3. Qualification programme to be agreed between manufacturer and purchaser. Page 6 prEN 2732: 2003 - Product qualification
