1、I AECMA PREN2040 7b LOL23LL OOOLOb 5 U A.E.C.M.A. STANDARD NORM E A.E .C.M .A. A.E.C.M.A. NORM DRAFT prEN2040 Edition 1 December 1976 ENGLISH VERSION RECTANGULAR STEEL BARS - ROLLED DIMENSIONS - TOLERANCE js 16 AEROSPACSERI ES BARRES !LATE LAMINEES EN ACIER DIMENSION - TOLERANCE js 16 SE R I E AG RO
2、SPATI AL E FLACHSTANGEN AUS STAHL - GEWALZT ABMESSUNGEN - TOLERANZ js 16 LUFT-UND RAUMFAHRT-REIHE The text of this standard, which exists in three equivalent versions (English, French, German), has been drawn up under the responsibility of A ECMA (Association 16uropenne des Constructeurs de Matrkl A
3、rospatial) and has received the agreement of Official Services concerned. ltis published on yellow paper as a draft European Standard intended to receive, under the same presentation and sccording to its own rules, the approval of CEN (European Committee for Standardization). - I The equivalent vers
4、ions in 92100 BOULOGNE-BILLANCOURT - FRANCE. Approved by COMITt! DE NORMALISATION be supplied by B.N.A.E., 8, rue Moreau-Vauthier of A.E.C.M.A. 197648-27 t I AECMA PREN2040 76 W 3JOL23LL OOOLBO7 7 prEN2040 Page 2. . CONTENTS 1 f SCQPE ANR FIELD OF APPLICATION 2 REFERENCES 3 MATERIALS 4 RFQL! I RED C
5、HARACTERISTICS B DESIGNATION 6 MARKING E 1 2 3 6 - DRAFT prEN2040 Page 3 ._ EUROPEAN STANDARD AEROSPACE SERIES prEN2040 RECTANGULAR STEEL BARS ROLLE DIMENSIONS - TOLERANCE js 16 SCOPE AND FIELD OF APPLICATION This standard specifies the dimensions, tolerances and physical constants of rolled rectang
6、ular steel bars,-usqd in aerospace construct ion. REFERENCES . ISO/R 286 - 1962 IS0 system for limits and fits - EN2069 . Part 1 : General tolerances and deviations b Acceptance conditions for semi-finished steel produ& = Technical specification, MATERIALS The materials are defined in the material s
7、tandards and technical specification. REQUIRED CHARACTERISTICS The dimensions, tolerances and linear mass are.defined in figure 1 and table 1, DES1 GNATION The designation of products defined in this standard may include the following elements : = a) name b) number of material standard c) dimensions
8、 d) number of this dimensional-standard Example : Bar EN2030 - 40 x 10 EN2040 Note - When the designation is to be codified, dimensions shall be replaced by the code lettersin table 2 o% this standard,: MARK1 NG Marking of the semi-finished products defined in this standard shall comply with the requirements of the teohsical specification, . ., p i) In preparation. f- I AECMA PREN2040 7b W LOL23LL 0001i809 O prEN2040 Page 4 m rl 7 AECMA PREN2040 76 prEN2040 Seite 5 1
