1、. . i- - - MIL-T-52087 47 9797706 0276667 8 W r-* - - 12 J producer for tolerances Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-52089 47 W 9979306 0276670 4 W - - .- r- r- . MIL-T-52089 (Ord) 1.4 Condition (thermal treatment).- Tube. shall b
2、e furnished in the following conditions, as specified (see 6;2): O - No finai thermal treatment A() - Annealed, types I, II or III d2) - Normalized, types I, II and III (see 6.2.1) T(2) - Normalized and tempered, types I, II and III (see 6.2.1) SR - Stress relieved or fin s ed annealed as.fihai. ope
3、ration, types I, II b? , and III (2)consulit producer for tolerances 1.5 Shapes.- Tube shall be furnished in the following shapes as specified (see 6.2); Square Rectangular Special shapes (Hexagonal, octagonal ,“D“-shaped, or as negotiated by the contractor and procuring agency) 1.6 Type of steel.-
4、The tube shall be manufactured from steel that has been killed, semi-killed, rimmed or capped at the option of the manufacturer, pro- viding that the tube shall meet all the requirements of this .specification. 2. APPIJXABLE Docms 2.1 bids, form a part of this specification. The following documents
5、of the issue in effect on date of invitation for FEDERAL FED. TEST METHOD STD. NO. i51 - Metals; Test Methods MILITARY MIL-STD-163 - Steel Nial Products Preparation for Shipment and Storage I (Copies of specifications, standards, drawings, and publications required by contractors in connection with
6、specific procurement functions should be obtained from the procuring agency or as directed by the contracting officer. ) 3.1 Chemical composition.- Chemical composition of the tube as specified in the contract or order ghallbe in accordance with tables I, II, or III, as 2 Provided by IHSNot for Resa
7、leNo reproduction or networking permitted without license from IHS-,-,- MIL-T-52089 47 9999906 0276673 6 WL number Y specified. Table I lists the steel numbers designating the standard low carbon steels used exclusively for seamless and welded tube. the carbon steels used for seamless and welded tub
8、e, respectively, Tables II and III list C Min . m. 3.1.1 T+ldle analysis.- A ladle analysis of each heat or lot of steel shall be furnished by the The ladle analysis for seamless Cube shall meet therequirements of tables I and II and for welded tube the requirements of tables I, and III. supplfer sh
9、owing the percentages of the elements present. 0.040 0.040 O. 040 O . 040 O. 040 Table I - Standard carbon steels exclusively for seamless and welded mecbmical tubing o. 050 0.050 o . 050 o . 050 o. 050 Chemical composition, percent Y Identification I d 1010 MT i015 Mp 1020 Mp x 1020 MP x 1015 0.05
10、0.15 0.10 0.20 - 0.10 0.20 0.15 0.25 0.15 0.25 Min. Mu Max. 0.30 0.30 0.60 0.30 0.70 0.60 0.60 0.9 0.60 1.00 The percentages for carbon content apply to check analysis; ai other per- centages apply to ladle analysis and are subject to the applicable check analysis tolerances shown in tables IV and V
11、. Purchasers specifying these steels shall use the proper prefix letters in addition to the identification number. rl 2l 2/m stands for mechanical tubing. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-.pi MIL-T-52087 Li7 W 7777706 027bb72 - I ._
12、-_ L Identification number 1022 1025 1026 i030 1035 i040 i045 1050 . Chemical composition, percent-/ . Carbon Mangane se Phosphorous Min. W. Min. Max. Min. Max. 0.18 0.23 0.70 1.00 - O. 040 0.22 0.28 0.30 0.60 - O . 040 0.28 0.34 0.60 o.go - O 040 0.32 0.38 0.60 o,go - O. 040 0.22 0.28 0.60 o.go - 0
13、.040 0.37 0.44 060 o.go - 0.040 0.43 0.50 0.60 o.go - 0.040 0.48 0.55 0.60 o.go - o .o40 MIL-T- 52o89(Ord) Min, - - - - - - - - Table II - Standard carbon steels for seamless tubingy Max. o . 050 .o 050 O. 050 0.050 0.050 o. 050 o . 050 O. 050 Sulphur 1 -/Chemical ranges and limits based on ladle an
14、alysis 2 JSilicon, when required, shall be spec.ified with the following ranges and limits: for steel number 1022, 0.010 percent maxirmun, or rangea 0.10 to 0.20, or 0.15 to 0.30 percent as applicable; for steel numbers 1025 to 1050 ranges of 0.10 to 0.20, or 0.15 to 0.30 percent, as applicable. 4 P
15、rovided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-e _- for steel numbers SAE 1025 to 1050, ranges of 0.10 to 0.20,. or 0.15 to 0.30 percent, 2/ l as applicable . I I I I I I Phosphorous EJxT O 040 O. 040 O. 040 O. 040 O. 040 O. 040 O . 040 0.040 Sulphur
16、 Min. Max. O. 050 O 050 0.050 0.050 o . 050 o 050 o. 050 0.050 1 -/Chemical ranges and limits based on ladle analysis. JPurchasers ordering these compositions must specify the prefix designation SAE with the identification number. e 5 Provided by IHSNot for ResaleNo reproduction or networking permit
17、ted without license from IHS-,-,-I MIL-T-52089 (Ord) 3.1.2 Check analysis.- Check analysis shall be made on all steels over 1026 and SAE 1026. The chemical composition shall be the reauirements, as specified, in tables II- and III when-tested in accordance wich 4.6.2.1; 3.1.2.1 Check analysis may be
18、 waived by the Government when it can be determined that the tube is produced from a heat of steel that is identical to that supplied on 8. previous lot and found acceptable. 3.2 Mechanical properties.- When mechanical properties are required, they shall be negotiated between the supplier and the pr
19、ocuring agency. 3.2.1 Tensile requirements.- When specified in the contract or order the tube shall meet the tensile requirements as specified by the procuring agency when tested in accordance with 4.6.2.2.1. 3.2.2 Hardness requirements.- When specified inthe contract or order the tube shall meet th
20、e hardness requirements specified by the procuring agency when tested in accordance with 4.6.2.2.2. 3.3 plier Dimensions and tolerances.- Dimensions shall be as specifieh in the sup- invitation for bids, contract or order or as agreed upon between the and procuring agency (see 6.2) * 3.3.1 Cross-sec
21、tional dimensions.- Cross-sectional dimensions, including wall thicknesses, shall be as specified in the invitation for bids, contract or order. 3.3.2 Size, convexity or concavity, and wail thickness.- The tolerances for outside dimensions convexity or concavity, and wall thickness, of square and re
22、ctangular tube, seamless and butt-welded (types I and III, conditions CD and CDSR) shall be in accordance with table IV, and for electric resistance welded and fusion welded tube (type II, conditions W and WSR) shall be in accordance with table V. The wall thickness tolerances shall not apply at the
23、 corners. For shapes other than square or rectangular, tolerances from specified dimensions shall be negotiated between the supplier and the procuring agency. 6 i) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - - - MIL-T-52089 47 9993906 0276675
24、3 W - .r_ .-A MIL-T-52089 (Ora) Table IV - Tolerances for outside dimensions and wall thicknesses of square and rectangular cold worked seamless mechanical tube and cold worked butt-welded mechanical tube - ty-pes I and III, process CD and process and condition CD and Sd Largest nominal Tolerance fo
25、r Wall outside dimension Wail thickness outside dimensions thickness across flats inches including convexity tolerance inches or concavity,-plus plus and and minus minus, $ Under 3/4 To 3/4 incl. Over 3/4 to 1-1/4 incl. Over 1-1/4 to 2-1/2 incl. Over 2-1/2 to 3-1/2 incl. mer 2-1/2 to 3-142 inc. Over
26、 3-1/2 to 5-1/2 incl. Over 5 -1/2 to 7 -1/2 incl, 0.065 and under . 0.065 and heavier All thicknesses AU thicknesses 0.065 and less Over 0.065 All thicknesses All thicknesses 0.015 inch 0.010 0.015 o o 025 1.0 $ 10 1 This table applies to grades of steel having not over 0.35 percent carbon. For grad
27、es having over 0.35 percent carbon, the tolerance requirements for outside dimensions and wall thickness shall be negotiated between the supplier and the procuring agency. L/ 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-? f I MIET- 52089(0rd) Ta
28、ble V - Tolerances for outside dimensions and wall thickness of square and rectangular tubing, electric resistance welded W, -CI condition SR) P tube gnd fusion welde tube (type 11,process W and process Out side Dimensions Urgest nominal outside Wall thickness, Outside tolerance at dimension, inches
29、 inch all sides at corners, plus and minus, inch 3/16 to 5/8 inca. .om to .o83 id. 004 Wer 5/8 to 1-3/8 incl. .o25 to ,156 inc. . 005 Over i-i/8 to 1-142 incl. -025 to .l92 incl. . 006 Wer 1-1/2 to 2 inc , ,032 to ,192 incl. , 008 Over 2 to 3 incl . .O35 to .25O incl. . 010 Over 3 to 4 incl. ,049 to
30、 .250 incl. e O20 Over 4 to 6 incl . .o65 to .250 inci. . 020 Convexity and Concavity: Shapes having two parallel sides are also measured in the center of the flat sides for convexity and concavity, this tolerance applies to.the specific size determined at the corners, and is measured on the followi
31、ng basis: Longest nominal outside dimension, inch 2-1/2 and under Over 2-1/2- Tolerance plus and minus, inch .o10 .o15 wall thickness: thickness. The tolerance is plus and minus 10 percent of nomihl wall This table applies to grades of steel having not over 0.35 percent carbon, For grades having ove
32、r 0.35 percent carbon, the tolerance requirements for outside dimensions and wall thickness shsll be negotiated between the supplier and the procuring agency. Y 4 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-52089 97 W 7999906 0276677 7 -
33、Wall thickness, Maximum inch radii of corners, inch MIL-T- 520860rd) Wall thickness Maximum inch radii of corners, inch 3.3.3 Corner radii of tubing.- UiiLess otherwise specified in the invitation for bids, contract, or order, corners of square and rectangular tube shall be slightly rounded inside a
34、nd rounded outside, consistent vith wall thickness. The outside corner may be slightly flattened. The corners of sections proc- essed by turkshead rolls do not have constant radii. for square and rectangular cold worked seamless mechanical tube and cold worked butt-velded mechanical tube (types I an
35、dIII process CD and process and condi- tion CD and SR) shall be as shown in table VI. The radii of corners for square and rectangular electric resistance welded mechanical tubing and fusion welded mechanical tube (type II, process W and processand condition W and SR) shall be in accordance with tabl
36、e VII. Theradii of corners Table VI - Dimensions of corner radii for square and rectangular cold worked seamless mechanical tubing and cold worked butt-welded mechanical tubing, (types I and III; process CD an process and condition CD an SR) ?ja2 Over .O20 to .O49 incl Over .O49 to ,065 incl. Over .
37、o65 to ,083 inci. Over .o83 to .o95 inc. 9/64 3/16 Over .O95 to .i09 incl. Over .i09 to .i34 incl. Over .i34 to .i56 incl. Over .i56 to .i88 incl. Over .i88 to ,250 incl. Over .25O to .313 incl. Over .313 to ,375 incl. Over ,375 to .SOO incl. Over .500 to .625 incl. 9/32- 11/32 7/16 1/2 11/16 27/32
38、9 J Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-c MIL-T-52087 47 M 9797706 O276678 7 W .- . MIL-T- 5208g(Ord) Table VI - Dimensions of corner radii for square and rectangular (type II, process W electric resistance welded mechanical tubing and fu
39、sion welded mechanical tubing: and process and condition W and SR) - Square and rectangular tubes Wall made from tubes whose diameter thickness, Radius ranges from inch i/2“ to i- i/2 inci. 42“ to 2-1./21 inci. 1/2“ to 4“ incb. i/2“ to 4 -1/8Ii inci. 3/4“ to 4 -i/81i inci. Over 4-1/8“ to 6“ incl. 1
40、to 4-i/8“ incl. Over 4-i/8“ to 6“ incl. 1*1/4“ tp 4“ incl Over 4“ to 6“ incl. . 1-1/4“ to 4“ incl. Over 4“ to 6“ incl. 2“ to 4“ incl. Over 4“ to 6“ incl. 2It to 4“ incl-. Over 4“ to 6“ incl. 2l to 6“ incl. 2 to 6“ incl. 2-1/21! to 4“ incl. Over 4“ to 6“ incl. 2-1/2“ to 6“ incl. 2-1/2“ to 6“ incl. .o
41、28 .o65 .o83 .o83 095 9 095 - .log . log .120 .120 134 .i34 .lu ,148 .i65 . i80 -203 203 .220, .238 250 *O35 .O 1/32 1/32“ 3/64“ 1/16“ 5/64“ 3/16“ 3/32“ 3/16! 1/8“ 3/16“ 1/81! 7/32“ 5/32“ 7/32“ 3/16! 7/32“ 1/4“ 1/4“ 5/16“ 3/8“ 3/8“ 3/8“ to to to to to to to to to to to to to to to to to *O to to to
42、to 1/16“ 1/16“ 5/64“ 7/64“ 5/16! 5/32“ 5/16“ 13/64“ 5/16“ 7/16 9/32“ 7/16“ 5/16“ 7/16“ 9/16“ 1/8“ 7/32“ 1/2“ 1/2“ 5/8“ r/ 5/8“ . . 10 P Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2 - - - - - MIL-T-52089 47 M 9799906 0276679 O M MIL-T- 52089( ord
43、) 3.3.4 Length 3,3.4.1 Mill lengths.- TJnless otherwise specified in the invitation for bids, contract, or order, tube shall be furnished in mill lengths of 5 feet or over 3.3.4.2 or order, tube shall. be furnished to exact lengths or lengths expressed as multiples (see 6.2. ) of specific units. Tol
44、erances from specified lengths shall be in accordance with table VIII. Exact lengths.- Wnen specified in the invitation for bids, contract, Table VIII- Length tolerances Lengths Tolerances, inch - 1 to 3 ft. incl. Plus or minus 1/16 in. Over 3 to 12 ft. incl. - Plus or minus 3/32 in. Over 12 to 20 f
45、t. incl. Plus or minus 1/8 in. Over 20 to 30 ft. incl. Plus or minus 3/16 in. Over 30 to 40 ft. incl. Plus or minus 3/8 in. 3.3.5 Twist tolerances.- Twist tolerances for square and rectangular tube For shall be as shown in table IX when measured in accordance with-4.5.2.1. shapes other than square o
46、r rectangular, the twist tolerance shall be nego- tiated between the supplier and the procuring agency. Table IX - Twist tolerances Urge st size, inches IQxirnm twist in 3 feet, inch Under 1/2 i/2 to 1-142 inci. Over 1.142 to 2-i/2 inci. Over 2-1/2 .o50 o75 .o95 . 125 3.3.6 gular tube shall be 0.060
47、 inch in any 3 feet. rectangular, the straightness tolerance shall be negotiated between the sup- .plier and procuring agency. Straightness tolerance.- Straightness .tolerance for square and rectan- For shapes other than square or 11 F .- Provided by IHSNot for ResaleNo reproduction or networking pe
48、rmitted without license from IHS-,-,-MIL-T- 52089( Ord) 3.3.7 Squareness tolerance.- Squareness tolerance for the sidesof square and rectangular tube shall be determined as follows: Plus or minus b = c x 0.006 inch b = Tolerance for ait of square c = Largest external dimension across 3.4 Identification marking.- The tube shall be marked for with the following: flats dent if icat (a) Spscification number. (b) Steel designhion and condition. (c) Wufacturers name or trade mark. information shall be attached to a tag on each bundle. If the tubes are bundled, this 3.5 Workmanship.- Seamless
