1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2013 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS2253E AEROSPACE MATERIAL SPECIFICATION AMS2253 REV. E Issued 1950-06 Revised 1
5、983-01 Reaffirmed 2013-11 Superseding AMS2253D Tolerances Carbon and Alloy Steel Tubing RATIONALE AMS2253E has been reaffirmed to comply with the SAE five-year review policy. 1. SCOPE:This specification covers established inch/pound manufacturing tolerances applicable to carbon and alloy tubing orde
6、red to inch/pound dimensions. These tolerances apply to all conditions unless otherwise noted. The term “excl” is used to apply only to the higher figure of the specified range.2. DIAMETER: 2.1 Aircraft Type, Seamless; Cold Finished: 2.1.1 Tubes with wall thickness less than 3% of the nominal OD wil
7、l be allowed an ovality tolerance over and under equal to 0.5% of the nominal OD in addition to the tolerance indicated in Table 1, but the mean OD shall be within the individual measurement tolerances specified in Table 1.2.1.2 When specified on the purchase order, the tolerance for OD shall apply
8、to the ID instead, but not to both ID and OD of the same lot of tubing.TABLE 1Specified ODInchesOD Tolerance, Inch, Plus and MinusAnnealed, Normalized,or Stress RelievedOD Tolerance, InchPlus and MinusQuenched and TemperedUp to 0.5, incl 0.005 0.010Over 0.5 to 1.5, incl 0.005 0.015Over 1.5 to 3.0, i
9、ncl 0.010 0.030Over 3.0 to 5.5, incl 0.015 0.045Over 5.5 0.020 0.060SAE INTERNATIONAL AMS2253E Page 2 of 6 2.2 Aircraft Type, Welded; Annealed, Normalized, or Stress Relieved: 2.2.1 When specified on the purchase order, the tolerance for OD shall apply to the ID instead, but not to both ID and OD of
10、 the same lot of tubing.2.2.2 Ovality is the difference between the maximum and minimum diameters of any one section of the tube.2.3 Mechanical Type, Seamless; Cold Finished, As Finished or Stressed Relieved: TABLE 2Specified ODInchesSpecifiedWall ThicknessInchOD Tolerance, InchDiameterPlus and Minu
11、sOD Tolerance, InchOvalityUp to 0.500, incl All 0.003 0.004Over 0.500 to 0.625, incl All 0.004 0.004Over 0.625 to 1.000, incl 0.028 to 0.065, excl 0.004 0.005Over 0.625 to 1.000, incl 0.065 to 0.120, incl 0.004 0.004Over 1.000 to 1.375, incl 0.028 to 0.120, incl 0.005 0.008Over 1.375 to 2.000, incl
12、0.028 to 0.065, excl 0.006 0.008Over 1.375 to 2.000, incl 0.065 to 0.134, incl 0.005 0.006Over 2.000 to 2.500, incl All 0.007 0.010Over 2.500 to 3.000, incl 0.035 to 0.083, excl 0.010 0.020Over 2.500 to 3.000, incl 0.083 to 0.134, incl 0.010 0.015Over 3.000 to 3.500, incl 0.042 to 0.095, excl 0.012
13、0.020Over 3.000 to 3.500, incl 0.095 to 0.134, incl 0.010 0.020Over 3.500 to 4.000, incl 0.040 to 0.095, excl 0.016 0.025Over 3.500 to 4.000, incl 0.095 to 0.134, incl 0.012 0.020Over 4.000 to 5.000, incl 0.049 to 0.095, excl 0.022 0.032Over 4.000 to 5.000, incl 0.095 to 0.134, incl 0.016 0.032SAE I
14、NTERNATIONAL AMS2253E Page 3 of 6 2.3.1 Tubes with wall thickness less than 3% of the nominal OD will be allowed an ovality tolerance over and under equal to 0.5% of the nominal OD in addition to the tolerance indicated in Table 3, but the average OD shall be within the individual measurement tolera
15、nces specified in Table 3.2.4 Mechanical Type, Seamless; Hot Finished: TABLE 3Specified ODInchesSpecifiedWall ThicknessInchOD Tolerance, InchPlusODTolerance,InchMinus0.187 to 0.50, excl All 0.004 00.50 to 1.50, excl All 0.005 (2.3.1) 0 (2.3.1)1.50 to 3.50, excl All 0.010 (2.3.1) 0 (2.3.1)3.50 to 5.5
16、0, excl All 0.015 (2.3.1) 0 (2.3.1)5.50 to 8.00, excl Under 5% of OD 0.030 (2.3.1) 0.030 (2.3.1)5.50 to 8.00, excl 5 - 7.5%, incl, of OD 0.020 0.0205.50 to 8.00, excl Over 7.5% of OD 0.030 08.00 to 10.75, incl Under 5% of OD 0.045 (2.3.1) 0.045 (2.3.1)8.00 to 10.75, incl 5 - 7.5%, incl, of OD 0.035
17、0.0358.00 to 10.75, incl Over 7.5% of OD 0.045 0TABLE 4Specified ODInchesSpecifiedWall ThicknessInchOD Tolerance, InchPlus and MinusAs Finished, AnnealedorNormalizedOD Tolerance, InchPlus and MinusQuenched and Tempered1.50 to 3.00, excl Over 0.094 0.023 0.0303.00 to 3.25, excl Over 0.094 0.031 0.045
18、3.25 to 5.50, excl 3% of OD or more 0.031 0.0455.50 to 8.00, excl 3% of OD or more 0.047 0.0608.00 to 10.75, incl 3 to 5%, excl, of OD 0.063 0.0758.00 to 10.75, incl 5% of OD or more 0.047 0.060SAE INTERNATIONAL AMS2253E Page 4 of 6 2.5 Mechanical Type, Seamless; Cold Finished, Annealed, Normalized,
19、 or Quenched and Tempered: 3. WALL THICKNESS: 3.1 Aircraft Type, Seamless; Cold Finished: 3.1.1 Wall thickness of tubes 0.5 inch and over in nominal ID shall not vary more than 10%.3.1.2 Wall thickness of tubes under 0.5 inch in nominal ID shall not vary more than 15%.3.2 Aircraft Type, Welded: TABL
20、E 5Specified ODInchesSpecifiedWall ThicknessInchOD Tolerance, InchPlus and Minus0.187 to 0.50, incl All 0.010Over 0.50 to 1.50, incl 3% of OD or more 0.015Over 1.50 to 3.50, incl 3% of OD or more 0.030Over 3.50 to 5.50, incl 3% of OD or more 0.045Over 5.50 to 8.00, incl 3% of OD or more 0.060Over 8.
21、00 to 10.75, incl 3% to 5%, excl, of OD 0.075Over 8.00 to 10.75, incl 5% of OD or more 0.060TABLE 6Specified WallThicknessInchesTolerance, Inch, Minus Only (3.2.1)Outside DiameterRanges, Inches0.375to 0.875, inclTolerance, Inch, Minus Only (3.2.1)Outside Diameter Ranges,InchesOver 0.875to 2.0,inclTo
22、lerance, Inch, Minus Only (3.2.1)Outside Diameter Ranges, InchesOver 2.0to 3.0,inclTolerance, Inch, Minus Only (3.2.1)Outside Diameter Ranges, InchesOver 3.0to 4.0,inclUp to 0.028, incl 0.004 0.004 - -Over 0.028 to 0.035, incl 0.004 0.004 0.005 -Over 0.035 to 0.049, incl 0.004 0.005 0.006 -Over 0.04
23、9 to 0.065, incl 0.004 0.006 0.006 0.006Over 0.065 to 0.083, incl 0.004 0.006 0.006 0.006Over 0.083 to 0.109, incl - 0.006 0.006 0.006Over 0.109 to 0.120, incl - 0.006 0.008 0.008Over 0.120 to 0.134, incl - 0.006 0.008 0.008SAE INTERNATIONAL AMS2253E Page 5 of 6 3.2.1 Tolerances are exclusive of the
24、 inside welding flash which shall not exceed the wall thickness of the tubing, but in any case shall not exceed 0.094 inch.3.3 Mechanical Type, Cold Finished: 3.3.1 Wall thickness of all tubes, except those sizes in 3.3.2 and 3.3.3, shall not vary more than 10%.3.3.2 Wall thickness may vary 12.5% fo
25、r the following sizes: 3.3.2.1 Under 5-1/2 inch nominal OD with a wall thickness over 25% of the nominal OD.3.3.2.2 5-1/2 to 8 inch nominal OD, excl, with a wall thickness over 1.25 inch.3.3.2.3 8 inch nominal OD and larger and weighing over 90 lb per foot.3.3.3 For tubes under 0.5 inch nominal ID (
26、or under 0.625 inch in nominal ID when wall thickness is more than 20% of OD), the wall thickness may vary 15%.3.4 Mechanical Type, Seamless, Hot Finished: 4. LENGTH: TABLE 7Specified Wall Thickness (T)InchTolerance, InchPlus and MinusUp to 0.109, incl 0.165TOver 0.109 to 0.172, incl 0.15TOver 0.172
27、 to 0.203, incl 0.14TOver 0.203 0.125TTABLE 8Specified LengthFeetOutside DiameterInchesTolerance, InchPlus OnlyUp to 4, incl Up to 2, incl 1/16Up to 4, incl Over 2 to 4, incl 3/32Up to 4, incl Over 4 1/8Over 4 to 10, incl Up to 2, incl 3/32Over 4 to 10, incl Over 2 1/8Over 10 to 24, incl All sizes 3
28、/16Over 24 All sizes 3/16 plus 1/8 for each10 feet or fraction over 24 feetSAE INTERNATIONAL AMS2253E Page 6 of 6 5. STRAIGHTNESS: 5.1 As Finished, Annealed, Normalized, or Stress-Relieved, All Types: 5.2 Quenched and Tempered (Tensile Strength 150,000 psi max): Tubes 5 inch and under in nominal OD
29、shall be of such straightness that the maximum curvature (depth of arc) shall not exceed 0.060 inch in any 3 feet of length or 0.020 inch x length in feet for shorter lengths.6. NOTES:6.1 The change bar ( l ) located in the left margin is for the convenience of the user in locating areas where techn
30、ical revisions, not editorial changes, have been made to the previous issue of this specification. An (R) symbol to the left of the document title indicates a complete revision of the specification.PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “E”TABLE 9Specified ODInchesSpecifiedWall ThicknessIn
31、chMax Curvature (depth of arc)Inch in any3 feetMax Curvature (depth of arc)Inch per footfor shorter lengthsUp to 5.0, incl Over 3% of OD butnot over 0.5 inch 0.030 0.010Over 5.0 to 8.0, incl Over 4% of OD butnot over 0.75 inch 0.045 0.015Over 8.0 to 10.75, incl Over 4% of OD butnot over 1.0 inch 0.060 0.020
