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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 therefr
2、om, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2003 SAE International All rights reserved. No part of this publication may
3、 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: 724-776-4970 (outside USA) Fa
4、x: 724-776-0790 Email: custsvcsae.org SAE WEB ADDRESS:http:/www.sae.org Tolerances Corrosion and Heat Resistant Steel, Iron Alloy, Titanium, and Titanium Alloy Bars and Wire 1.SCOPE: This specification covers established manufacturing tolerances applicable to corrosion and heat resistant steel, iron
5、 alloy, titanium, and titanium alloy bars and wire. 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, THICKNESS, AND WIDTH: 2.1Cold Finished Bars: 2.1.1Rounds, Squares, Hexagons, and Octago
6、ns (See 2.1.3): See Table 1A. TABLE 1A - Diameter or Thickness Tolerance, Inch/Pound Units Specified Diameter or Thickness Inches Tolerance, Inch Plus and Minus (See 2.1.1.1) Rounds Tolerance, Inch Minus Only Squares, Hexagons, and Octagons (See 2.1.1.2) Over 0.500 to 1.000, excl0.0020.004 1.0000.00
7、250.004 Over 1.000 to 1.500, excl0.00250.006 1.500 to 2.000, incl0.0030.006 Over 2.000 to 3.000 incl0.0030.008 Over 3.000 to 4.000, incl0.0030.010 AEROSPACE MATERIAL SPECIFICATION AMS 2241N IssuedMAY 1945 RevisedSEP 2003 Superseding AMS 2241M Copyright SAE International Provided by IHS under license
8、 with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 2 - 2.1.1.1Size tolerances for round bars are plus and minus as shown in Table 1. When required, however, they may be specified all plus and nothing minus, or all minus and nothing pl
9、us, or any combination of plus and minus, if the total spread in size tolerance for a specified size is not less than the total spread shown in Table 1. 2.1.1.2For titanium and titanium alloys, the difference among the three measurements of the distance between opposite faces of hexagons shall be no
10、t greater than one-half the size tolerance and the difference between the measurements of the distance between opposite faces of octagons shall be not greater than the size tolerance. 2.1.2Flats (See 2.1.3): See Table 2. TABLE 1B - Diameter or Thickness Tolerance, SI Units Specified Diameter or Thic
11、kness Millimeters Tolerance, Millimeter Plus and Minus (See 2.1.1.1) Rounds Tolerance, Millimeter Minus Only Squares, Hexagons, and Octagons (See 2.1.1.2) Over 12.50 to25.00, excl0.050.10 25.000.0620.10 Over 25.00 to37.50, excl0.0260.15 37.50 to50.00, incl0.080.15 Over 50.00 to75.00, incl0.080.20 Ov
12、er 75.00 to 100.00, incl0.080.25 TABLE 2A - Thickness and Width Tolerances, Inch/Pound Units Specified Width Inches Thickness Tolerance, Inch Plus and Minus Width Tolerance, Inch Plus and Minus 0.125to 0.250, incl0.0020.004 Over 0.250to 1.000, incl0.0020.002 Over 1.000to 2.000, incl0.0030.003 Over 2
13、.000to 3.000, incl0.0040.004 Over 3.000to 4.000, incl0.0050.005 Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 3 - 2.1.3If cold finished bars are ordered heat treated or hea
14、t treated and pickled after cold finishing, tolerances shall be double those of Table 1 and Table 2. 2.2Cold Finished Wire: 2.2.1Rounds, Squares, Hexagons, and Octagons (See 2.2.1.1): See Table 3. TABLE 2B - Thickness and Width Tolerances, SI Units Specified Width Millimeters Thickness Tolerance, Mi
15、llimeter Plus and Minus Width Tolerance, Millimeter Plus and Minus 3.00 to6.00, incl0.050.10 Over6.00 to25.00, incl0.050.05 Over 25.00 to50.00, incl0.080.08 Over 50.00 to75.00, incl0.100.10 Over 75.00 to 115.00, incl0.120.12 TABLE 3A - Diameter or Thickness Tolerances, Inch/Pound Units Specified Dia
16、meter or Thickness Inch Tolerance, Inch Plus and Minus Rounds and Squares Tolerance, Inch Minus Only Hexagons and Octagons (See 2.2.1.3) 0.003to0.0048, excl0.0001- 0.0048to0.008,excl0.0002- 0.008to0.012,excl0.0003- 0.012to0.024,excl0.0004 (See 2.2.1.2)- 0.024to0.033,excl0.0005 (See 2.2.1.2)- 0.033to
17、0.044,excl0.0008- 0.044to0.125,excl0.001- 0.125to0.3125, excl0.0010.002 0.3125to0.500,excl0.00150.003 0.5000.0020.004 Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 4 - 2.2.
18、1.1If cold finished wire is ordered heat treated or heat treated and pickled after cold finishing, tolerances shall be double those of Table 3 for nominal sizes 0.024 (0.60 mm) inch and over. 2.2.1.2For titanium and titanium alloys, tolerances for these sizes are 0.00075 inch (0.019 mm). 2.2.1.3For
19、titanium and titanium alloys, the difference among the three measurements of the distance between opposite faces of hexagons shall be not greater than one-half the size tolerance, and the difference among the four measurements of the distance between opposite faces of octagons shall be not greater t
20、han one-half the size tolerance. 2.2.1.4Out-of-Round: Round wire shall not be out-of-round by more than one-half of the total tolerance shown in Table 3. 2.2.2Flats: See Table 4. TABLE 3B - Diameter or Thickness Tolerances, SI Units Specified Diameter or Thickness Millimeters Tolerance, Millimeter P
21、lus and Minus Rounds and Squares Tolerance, Millimeter Minus Only Hexagons and Octagons (See 2.2.1.3) 0.08 to0.12, excl0.002- 0.12 to0.20, excl0.005- 0.20 to0.30, excl0.008- 0.30 to0.60, excl0.010 (See 2.2.1.2)- 0.60 to0.85, excl0.012 (See 2.2.1.2)- 0.85 to1.10, excl0.020- 1.10 to3.15, excl0.02- 3.1
22、5 to7.80, excl0.020.05 7.80 to 12.50, excl0.0380.08 12.500.050.10 TABLE 4A - Thickness Tolerances, Inch/Pound Units Specified Thickness Inches Tolerance, Inch Plus and Minus Up to 0.029,excl0.001 0.029 to 0.035,excl0.0015 0.035 to 0.1875, excl0.002 Copyright SAE International Provided by IHS under l
23、icense with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 5 - 2.2.2.1Width tolerances shall be 0.005 inch (0.12 mm) for nominal widths 0.0625 to 0.375 inch (1.56 to 9.38 mm), exclusive. 2.3Hot Finished Bars: 2.3.1Hot Rolled: 2.3.1.1Rou
24、nds and Squares: See Table 5. Out-of-round is the difference between the maximum and minimum diameters of the bar, measured at the same cross section. Out-of-square is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite f
25、aces. TABLE 4B - Thickness Tolerances, SI Units Specified Thickness Millimeters Tolerance, Millimeter Plus and Minus Up to0.70, excl0.02 0.70 to0.90, excl0.038 0.90 to4.75, excl0.04 TABLE 5A - Diameter of Thickness Tolerances, Inch/Pound Units Specified Diameter or Thickness Inches Tolerance, Inch P
26、lus Tolerance, Inch Minus Out-of-Round or Out-or-Square Inch 0.250to 0.3125, incl0.0050.0050.008 Over 0.3125to 0.4375, incl0.0060.0060.009 Over 0.4375to 0.625,incl0.0070.0070.010 Over 0.625to 0.875,incl0.0080.0080.012 Over 0.875to 1.000,incl0.0090.0090.013 Over 1.000to 1.125,incl0.0100.0100.015 Over
27、 1.125to 1.250,incl0.0110.0110.016 Over 1.250to 1.375,incl0.0120.0120.018 Over 1.375to 1.500,incl0.0140.0140.021 Over 1.500to 2.000,incl1/641/640.023 Over 2.000to 2.500,incl1/3200.023 Over 2.500to 3.500,incl3/6400.035 Over 3.500to 4.500,incl1/1600.046 Over 4.500to 5.500,incl5/6400.058 Over 5.500to 6
28、.500,incl1/800.070 Over 6.500to 8.000,incl5/3200.085 Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 6 - 2.3.1.2Hexagons and Octagons: See Table 6. TABLE 5B - Diameter of Thi
29、ckness Tolerances, SI Units Specified Diameter or Thickness Millimeters Tolerance, Millimeter Plus Tolerance, Millimeter Minus Out-of-Round or Out-or-Square Millimeter 6.25 to7.80, incl0.120.120.20 Over7.80 to11.00, incl0.150.150.22 Over11.00 to15.75, incl0.180.180.25 Over15.75 to22.00, incl0.200.20
30、0.30 Over22.00 to25.00, incl0.220.220.32 Over25.00 to28.00, incl0.250.250.38 Over28.00 to31.00, incl0.280.280.40 Over31.00 to34.00, incl0.300.300.45 Over34.00 to37.50, incl0.350.350.52 Over37.50 to50.00, incl0.400.400.58 Over50.00 to62.50, incl0.8000.58 Over62.50 to87.50, incl1.2000.88 Over87.50 to
31、115.00 incl1.6001.15 Over 115.00 to 138.00 incl2.0001.45 Over 138.00 to 165.00 incl3.1501.75 Over 165.00 to 200.00, incl3.9002.12 TABLE 6A - Thickness Tolerances, Inch/Pound Units Specified Thickness Inches Tolerance, Inch Plus and Minus Maximum Difference 3 Measurements Hexagons Only Inch 0.250to 0
32、.500, incl0.0070.011 Over 0.500to 1.000, incl0.0100.015 Over 1.000to 1.500, incl0.0210.025 Over 1.500to 2.000, incl1/321/32 Over 2.000to 2.500, incl3/643/64 Over 2.500to 3.500, incl1/161/16 Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking
33、 permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 7 - 2.3.1.3Flats: See Table 7 and Table 8. TABLE 6B - Thickness Tolerances, SI Units Specified Thickness Millimeters Tolerance, Millimeter Plus and Minus Maximum Difference 3 Measurements Hexagons Only Millimeter 6.25 to 12.50, incl0.18
34、0.28 Over 12.50 to 25.00, incl0.250.38 Over 25.00 to 37.50, incl0.520.62 Over 37.50 to 50.00, incl0.780.78 Over 50.00 to 62.50, incl1.181.18 Over 62.50 to 87.50, incl1.561.56 TABLE 7A - Thickness Tolerances, Inch; for Thickness Ranges, Inch/Pound Units Specified Width, Inches 0.125 to 0.500, incl Pl
35、us for Thickness Ranges, SI Units Specified Width, Millimeters 3.10 to 12.50, incl Plus For Length Ranges, Feet, Inch/Pounds Units Specified Diameter of Rounds, Thickness of Squares, Hexagons, and Octagons, Width of Flats Inches Length Up to 12, Incl Length Over 12 to 25, Incl Up to2.000, incl1/23/4
36、 Over2.000 to4.000, incl3/41 Over4.000 to6.000, incl11-1/4 Over6.000 to9.000, incl1-1/41-1/2 Over9.000 to12.000, incl1-1/22 TABLE 9B - Length Tolerances, Inches, Plus Only; For Length Ranges, Feet, SI Units Specified Diameter of Rounds, Thickness of Squares, Hexagons, and Octagons, Width of Flats Mi
37、llimeters Length Up to 3600, Incl Length Over 3600 to 7500, Incl Up to50.00, incl12.519.0 Over50.00 to100.00, incl19.025.0 Over 100.00 to150.00, incl25.031.0 Over 150.00 to225.00, incl31.037.5 Over 225.00 to300.00, incl37.550.0 TABLE 10A - Length Tolerances, Inch, Plus Only; For Length Ranges, Feet,
38、 Inch/Pound Units Specified Diameter of Rounds, Thickness of Squares, Hexagons, and Octagons, Inches Length Up to 3, Excl Length 3 to 12, Incl Length Over 12 to 25, Incl Up to 0.125, incl1/161/161/8 Over 0.125 to 0.500, incl1/32 (See 3.2.1.1)1/161/8 Copyright SAE International Provided by IHS under
39、license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 10 - 3.2.1.1For titanium and titanium alloys, tolerance for these sizes is +1/16 inch, -0 (+1.6 mm, -0). 4.STRAIGHTNESS: 4.1Cold Finished: Bars shall be of such straightness th
40、at the maximum curvature (depth of arc) shall not exceed 0.0625 inch (1.56 mm) in any 5 feet (1500 mm) of length, but shall not exceed 0.0125 inch (1.04 mm) x length in feet (meters). 4.2Hot Finished or Heat Treated: Unless otherwise ordered, bars shall be of such straightness that the maximum curva
41、ture (depth of arc) shall not exceed 0.125 inch (3.13 mm) in any 5 feet (1500 mm) of length, but shall not exceed 0.025 inch (2.08 mm) x length in feet (meters). 5.SPECIAL TOLERANCES: 5.1Across Corners, Hexagons: The requirements shown in Table 11 apply to cold finished hexagons, when specified. TAB
42、LE 10B - Length Tolerances, Inch, Plus Only; For Length Ranges, Feet, SI Units Specified Diameter of Rounds, Thickness of Squares, Hexagons, and Octagons, Millimeters Length Up to 900, Excl Length 900 to 3600, Incl Length Over 3600 to 7500, Incl Up to3.12, incl1.61.63.1 Over3.12 to 12.50, incl0.8 (S
43、ee 3.2.1.1)1.63.1 Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 11 - TABLE 11A - Minimum Distance Across Corners, Inch/Pound Units Specified Thickness Inches Distance Acros
44、s Corners Inches 0.1875 0.2188 0.250 0.3125 0.375 0.210 0.245 0.280 0.351 0.423 0.4375 0.500 0.5625 0.5938 0.625 0.492 0.564 0.635 0.670 0.706 0.6875 0.750 0.8125 0.875 0.9375 0.775 0.848 0.919 0.990 1.062 1.000 1.0625 1.133 1.203 TABLE 11B - Minimum Distance Across Corners, SI Units Specified Thick
45、ness Millimeters Distance Across Corners Millimeters 4.50 5.50 6.50 8.00 9.50 11.00 12.50 14.00 15.00 16.00 17.50 19.00 20.50 22.00 24.00 25.00 27.00 5.04 6.17 7.31 8.97 10.67 12.37 14.05 15.75 16.88 18.01 19.71 21.41 23.11 24.81 27.08 28.21 30.42 Copyright SAE International Provided by IHS under li
46、cense with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,- AMS 2241NSAEAMS 2241N - 12 - 6.NOTES: 6.1A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made
47、 to the previous issue of a specification. An (R) symbol to the left of the document title indicates a complete revision of the specification. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only. 6.1.1It can be noted that MAM 2241 has been made noncurrent. Accordingly, this AMS 2241N includes metric equivalents. PREPARED UNDER THE JURISDICTION OF AMS COMMITTEE “F” Copyright SAE International Provided by IHS under license with SAE Not for ResaleNo reproduction or networking permitted without license from IHS -,-
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