1、Document ProjectNo. Draft for Public Comment 88 7088 Latest date for receipt of comments .so bC i Date i3a JULY 1998 DRAFT EUROPEAN (AECMA) AEROSPACE STANDARD a - - See EN 2082-3 Electrical conductivity See EN 2082-3 or 155 (Typical value) Hardness HB 6 i 20 per product A 5 30 per batch External def
2、ects Macrostructure Internal defects Batch uniformity - - Marking inspection Dimensional inspection Notes See EN 2082-3 See EN 2082-3 Typical use -I See EN 2082-3 3 I Measurement on the surface of the sample from which tensile specimens are taken. Acceptable 71 y 2 22,O MSlm I 21 ,O MSIm a y c 22.0
3、MSlm Acceptable if Rp0,2 Li Rp0,2 L min. 3, + 70 MPa or if stress corrosion test is acceptable I y c 21 .O MSlm I Not acceptable 11 ASTM G47-90 21 The “capability clause“ applies or as per line 32 41 ST I 100a5150 I a 25 I a 22 I a 21 I 150ai200 I a 25 I a 21 I 2 20 -1 See EN 2082-3 -1 See EN 2082-3
4、 -I- See EN 2082-3 1) The use of qUench additives or higher quenchant temperature shall be subject to agreement between manufacturer and purchaser. 2) Artificial ageing may be carried oui using the following alternative single stage method : heating to a temperature of 170 “C i 6 5 180 “C at a rate
5、not exceeding 20 “C / h and soaking at this temperature for 6 h s t i 16 h. 3) If L specimen cannot be cut, LT specimen shall be used by agreement between manufacturer and purchaser. -I Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA
6、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 6 prEN 3339 : 1998 roduct qualification _ Qualification programme to be agreed between manufacturer and purchaser. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
