1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication Comments should be sent within six months after the date of publication to prEN 4000 Edition P 2 October 1997 C6 Chairman ICs: PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - B-1200 BRUXELLES
2、 - Tel. (+32) 2 775 81 1 O - Fax. (+32) 2 775 81 11 ENGLISH VERSION Aerospace series Metallic materials Rules for the drafting and presentation of dimensional standards for metallic semi-finished products Srie arospatiale Matriaux mtalliques Rgles pour la rdaction et la prsentation des normes dimens
3、ionnelles des demi-produits mtalliques Supersedes edition P 1 May 1996 Luft- und Raumfahrt Metallische Werkstoffe Regeln fr die Abfassung und Gestaltung von Manormen fr metallisches Halbzeug This “Aerospace Series ri Prestandard has been drawn up under the responsibility of AECMA (The European Assoc
4、iation 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. Subsequent to the publication of this Prestandard, the technical content sha
5、ll not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre INPS) and formal agreement of the Official Services of the Member countries it will be subm
6、itted as a draft European Standard to CEN (European Committee for Standardira tion) for formal vote. 1997-1 0-31 AECMA Gulledelle 94 B-1200 BRUXELLES Mr Grgoire aecma 1997 STD*AECMA PREN 4000-ENGL 1777 II 10123L1 0013b7b T10 II Page 2 prEN 4000: 1997 Contents list 10 11 12 13 Introduction . 3 Scope
7、. 3 Normative references 3 Definitions . 3 Indication of dimensional tolerances 4 Arrangement . 6 Rules common to all forms of metallic semi-finished products . 7 Rules applicable to sheets and plates 9 Rules applicable to strips . 14 Rules applicable to round bars 16 Rules applicable to hexagonal b
8、ars . 19 Rules applicable to square bars 22 Rules applicable to rectangular bars 26 Rules applicable to circular tubes 30 STD-AECMA PREN 4000-ENGL 1997 II 1012311 00L3b77 957 II Page 3 prEN 4000: 1997 O Introduction This standard is part of the series of EN metallic material standards for aerospace
9、applications. The general organization of this series is described in EN 4258. 1 Scope This standard specifies the rules for the drafting and presentation of metallic semi-finished dimensional standards for aerospace applications. This standard applies to wrought semi-finished metallic products (suc
10、h as sheets, plates, bars, tubes, etc.) characterized by their form within a range of standardized dimensions. 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 i
11、n 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 revision. For undated references the latest edition of the publication referred
12、to applies. IS0 286-2 IS0 system of limits and fits - Part 2 : Tables of standard tolerance grades and limit deviations for holes and shafts IS0 406 Technical drawings - Tolerancing of linear and angular dimensions EN 4258 Aerospace series - Metallic materials - General organization of standardizati
13、on - Links between types of EN standards and their use 1) EN 4259 Aerospace series - Metallic materials - Definitions of general terms 2) 3 Definitions For the purposes of this standard, the definitions given in EN 4259 apply. 1) Published as AECMA Prestandard at the date of publication of this stan
14、dard 2) In preparation at the date of publication of this standard STDeAECMA PREN 4000-ENGL 1797 1012311 0013b8 893 I Page 4 prEN 4000: 1997 4 Indication of dimensional tolerances El 4.1 This shall be indicated as follows : Case of one tolerance for a dimensional range Diameter 5101150 Dimensions in
15、 millimetres Tolerance class h 11 1 Indicate the dimension concerned (e.g. diameter). Indicate “tolerance“ or “class of tolerance“. Indicate the dimensional range or “All“. Indicate the tolerance class in accordance with IS0 286-2 or tolerance according to IS0 406. EXAMPLE 1 : EXAMPLE 2 : Dimensions
16、 in millimetres Width Tolerance All + 10 O 4.2 Case of several tolerances for a dimensional range These shall be indicated as follows : Dimensions in millimetres El Indicate the dimension concerned (e.g. diameter). Indicate “tolerances“ or “tolerance classes“. Indicate the part of the dimensional ra
17、nge. Indicate the tolerance class in accordance with IS0 286-6 or tolerance according to IS0 406. I STDmAECMA PREN 4000-ENGL 1997 I LCIL23LL 00L3b99 72T I Page 5 prEN 4000: 1997 Diameter 320165 EXAMPLE 1 : Tolerance classes h 11 Thickness 0,25 i a I 0,4 65 5 O00 + 0,002 x e O 4.4 Case of tolerances
18、not specified This shall be indicated as in the following sentence : “To be agreed between manufacturer and purchaser“. 5 Arrangement The general arrangement of metallic semi-finished dimensional standards is as follows : O 1 2 3 4 5 5.1 5.2 Introduction Scope Normative references Form Recommended d
19、imensions and mass Tolerances Dimensional tolerances Geometric tolerances The rules for the drafting and presentation of standards specific to the commonest form of semi- finished metallic products are given in the following clauses of this standard : 6 7 8 9 10 11 12 13 Rules common to all forms of
20、 metallic semi-finished products Rules applicable to sheets and plates Rules applicable to strips Rules applicable to round bars Rules applicable to hexagonal bars Rules applicable to square bars Rules applicable to rectangular bars Rules applicable to circular tubes They define the minimum informat
21、ion to be shown in the relevant dimensional standard. Additional information may be given, if necessary. NOTE : For semi-finished products not covered by this standard, it is recommended that the arrangement and the rules relevant to the form of the nearest semi-finished product be followed. For exa
22、mple, for wires, the arrangement and rules applicable to round bars should be adapted. 6 Rules common to all forms of metallic semi-finished products 6.1 Title The title shall be written in the following order : - “Aerospace series“ ; - form of semi-finished metallic product and, if necessary, manuf
23、acturing process ; - material family ; - tolerance(s) or tolerance class, if necessary ; - main dimension(s) and relevant limit(s) if appropriate ; - “ Dim en si o ns “ and presented as following examples : EXAMPLE 1 : Aerospace series Sheets, hot rolled in titanium and titanium alloys Thickness 0,8
24、 mm I a I 6 mm Dimensions EXAMPLE 2 : Aerospace series Capillary tubes, seamless in heat resisting alloys Diameter 0,6 mm I D I2 mm Dimensions EXAMPLE 3 : Aerospace series Round bars, drawn in steel Tolerance class h 9 Diameter 1 mm I D I 150 mm Dimensions STD-AECMA PREN 4000-ENGL 1777 m LOL23LL 003
25、3702 044 = Page 8 prEN 4000: 1997 6.2 Clauses O, 1 and 2 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. 1 Scope This standard specifies the dimensions and tolerances of
26、: 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 hereafter. For dated references, subse
27、quent 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 3848 Aerospace series - Semi-finished metallic products - Method
28、of measuring form deviations 121 EN 4258 Aerospace series - Metallic materials - General organization of standardization - Links between types of EN standards and their use Repeat all informations given in the title, except the first and last lines presented in the same format. If necessary, further
29、 information may be added to clarify the scope. If referred to in the text. Other standards referred to in the text, if any. STDSAECMA PREN 4000-ENGL 1797 E 1012311 0013703 TBO W . . . I Rules applicable to sheets and plates . . . . . . Page 9 prEN 4000: 1997 3 Form See figure 1. Figure 1 4 Recommen
30、ded dimensions and mass See table 1. Table 1 Nominal a l mm Mass per unit area 1) kg/m2 If necessary, one or more columns may be introduced to indicate one or more of the following : ai Typical format bxl mm x mm b) Typical width b mm b mm Cl Maximum width d) Typical length e mm e) Maximum length e
31、mm The values to be used are : - aluminium and aluminium alloys : 2,8 - steels : 7,85 - titanium and titanium alloys : 4,5 - heat resisting alloys : 8,l STD.AECMA PREN WO-ENGL iw m I,OLZL OOLWOL 717 MI Page 10 prEN 4000: 1997 5 Tolerances 5.1 Dimensional tolerances 5.1 .I Thickness See table 2. Meas
32、urements shall be taken at least mm from the edge. Table 2 5.1.2 Width See table 3. Table 3 El 5.1.3 Length See table 4. Table 4 El Specify the value. Sentence to be included, if necessary. See clause 4 of this standard. STD.AECMA PREN WOO-ENGL Lqw m LOLLL 003705 1353 m Page 11 prEN 4000: 1997 e I .
33、 . 131 . 131 5.2 Geometric tolerances 5.2.1 Squareness 5.2.1 .I Method of measurement See EN 3848. 5.2.1.2 Tolerances See table 5. . 131 Table 5 Length e I . Dimensions in millimetres Maximum differences in the lengths of diagonals for all widths and thicknesses . I Length Maximum differences in the
34、 lengths of diagonals for all widths and for thickness : . . . . . . I . . . 5.2.2 Lateral curvature 5.2.2.1 Method of measurement and symbol See EN 3848. 121 131 . . . . Specify the value, calculated as a function of length or fixed. STD-AECMA PREN 400U-ENGL 1777 W LO12311 flfl137nb 77T Page 12 prE
35、N 4000: 1997 5 . . a S . 5.2.2.2 Tolerances See table 6. The lateral curvature may be concave or convex. 5 . Table 6 Dimensions in millimetres I Thickness Lateral curvature Fon : width I length I I . . I a S . I . I I . p-J . a 5 . I I . Specify the value, calculated as a function of width or fixed.
36、 Specify the value, calculated as a function of length or fixed. STD-AECMA PREN 4000-ENGL 1997 D30323LL 0033707 b2b m Page 13 prEN 4000: 1997 Thickness . a I . . a I . . a I 5.2.3 Flatness Flatness deviation f for : width length chord b I b 5 .e I e I . w=pJ I 5.pJ 5.pJ I.H a . I.pJ 5.pJ s. s.m . I.
37、pJ 5.pJ 5.m .B . I I 5.2.3.1 Method of measurement and symbols Thickness See EN 3848. chord all widths all lengths w=pJ 5.2.3.2 Tolerances . . a I I I See table 7. I . I . Table 7 . a I . I . 5 . I . If flatness does not apply to all the semi-finished metallic products concerned, (e.g. : plates deli
38、vered in the annealed condition), specify application limits. If the specified tolerances are applicable for all widths and thicknesses, table 7 shall be drafted as follows : 131 Specify the minimum permissible value of chords (e.g. 300 mm). E Specify the value, calulated as a function of width or f
39、ixed. Specify the value, calculated as a function of length or fixed. STD-AECMA PREN q000-ENGL 1777 m LO12311 0013708 5b2 m Page 14 prEN 4000: 1997 8 Rules applicable to strips 3 Form See figure 1. “I r- -1 Figure 1 4 Recommended dimensions and mass See table 1. Table 1 Nominal a Mass per unit area
40、1) kg/m2 I . I . I . I I . I . I . I I . I . I . I I I 1) For information, calculated with a density of kg/dm3 If necessary, one or more columns may be introduced to indicate one or more of the following : a) Typical width b mm b) Maximum width b mm The values to be used are : - aluminium and alumin
41、ium alloys : 2,8 - steels : 7,85 - titanium and titanium alloys : 4,5 - heat resisting alloys : 8,l STD-AECMA PREN 4000-ENGL 1997 E LOL23LL 0013709 4T9 W Page 15 prEN 4000: 1997 5 Dimensional tolerances 5.1 Thickness See table 2. Measurements shall be taken at least mm from the edge. Table 2 5.2 Wid
42、th See table 3. Table 3 Specify the value. Sentence to be included, if necessary. See clause 4 of this standard. STD-AECMA PREN 4000-ENGL 1777 9 1OL23Ll OOL37LO 110 9 Page 16 prEN 4000: 1997 w 9 Rules applicable to round bars Q 3 Form I . I . See figure 1. I I - 0 -t . . . . Figure 1 4 Recommended d
43、imensions and mass 4.1 Diameter and mass See table 1. Table 1 Nominal I :m Linear mass 1) kg/m 4.2 Length The order shall specify if bars are to be supplied in fixed or in random lengths. In the event of a supply of random lengths the minimum and maximum values for the lengths shall be specified on
44、the order. The values to be used are : - aluminium and aluminium alloys : 2,8 - steels : 7,85 - titanium and titanium alloys : 4,5 - heat resisting alloys : 8,l 5 Tolerances 5.1 Dimensional tolerances - . I DI . I . I . . D I . I . I . Table 2 El . DI . I . 5.1.2 Length See table 3, only applicable
45、to bars supplied in fixed lengths. Table 3 I . . I D I . . DI . 5.2 Geometric tolerances 5.2.1 Straightness 5.2.1.1 Method of measurement and symbols See EN 3848. 5.2.1.2 Tolerances See table 4. I . I . Table 4 Dimensions in millimetres Diameter Straightness deviation : Y, per metre I Y, on any leng
46、th X2 1) . . . I D I I I I Specify the value. STD-AECMA PREN LiOOO-ENGL 1997 = 1012311 0013712 T93 = Page 18 Diameter . I DI . prEN 4000: 1997 Roundness deviation I . 5.2.2 Roundness 5.2.2.1 Method of measurement See EN 3848. 5.2.2.2 Tolerances . D I . . D I . See table 5. I . I . Table 5 Dimensions
47、 in millimetres m. If necessary, this paragraph may be drafted as follows : EXAMPLE 1 : Roundness deviation shall be contained within the diameter tolerances. EXAMPLE 2 : The maximum permissible roundness deviation shall be . % of the diameter tolerance. - - STD-AECMA PREN 4000-ENGL 1997 E 1012333 0
48、033733 92T Page 19 prEN 4000: 1997 10 Rules applicable to hexagonal bars 3 Form See figure 1. Figure 1 4 Recommended dimensions and mass 4.1 Width across flats and mass See table 1. Table 1 Nominal Linear mass 1) . I 1) For information, calculated with a density of kg/dm3 4.2 Length The order shall
49、specify if bars are to be supplied in fixed or in random lengths. In the event of a supply of random lengths the minimum and maximum values for the lengths shall be specified on the order. 111 The values to be used are : - aluminium and aluminium alloys : 2,8 - steels : 7,85 - titanium and titanium alloys : 4,5 - heat resisting alloys : 8,l STD-AECMA PREN 4000-ENGL 1777 W 1012311 OOL37LY Bbb W Page 20 prEN 4000: 1997 . a I . . a I . 5 Tolerances 5.1 Dimensional tolerances 5.1.1 Width across flats See table 2. I . I . Table 2 5.1.2 Length
