1、, PROPOSED MILITARY SPECIFICATION. . MIL-T-15089C (OS) 13 September 1974 SUPERSEDING MIL-T-15089B (Nord) 27 April 1959 TUBING, ALUMINUM ALLOY, ROUND, SEAMLESS (FOR ROCKET MOTORS) This specification is approved for use by all departments and agencies of the Department of Defense. 1. SCOPE AND CLASSIF
2、ICATION - 1.1 Scope. This specification covers aluminum alloy, seamless, round tubing for use in the manufacture of rocket motors. * 1.2 Classification. The tubing shall be of the following alloys, tempers, and classes as specified (see 6.1): Alloy 2014 - T6 or T65 11 Aiioy 2024 - T8 1 or T85 1 1 c
3、Nominal size (inches) (inches) - Class Outside diameter Wall thickness 1 2 3 4 5.25 5 .o0 2.75 2.00 0.292 0.138 0.072 0.060 )FSC- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-15089C Li7 W 777790b 0272025 T m MIL-T-15089C (OS) 2. APPLICABLE D
4、OCUMENTS 2.1 The following documents of the issues in effect on date of invitation for bid or request for proposals form a part of this specification to the extent specified herein. SPECIFICATIONS Military MIL-H-6088 STANDARDS Federal *FED-STD-15 1 *FED-STD-245 Militarv MIL-STD-649 DRAWINGS Navy Dep
5、artment Heat Treatment of Aluminum Alloys; Process for (for Aircraft Applications) Metal, Test Methods Tolerance for Aluminum Alloy and Magnesium Alloy Wrought Products Aluminum and Magnesium Products, Preparation for Shipment and Storage If required by the contract or order, applicable drawings for
6、 the finished rocket motor form part of this specification (see 6.1 ). (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) *
7、2.2 Other publications. The following document forms a part of this specification to the extent specified herein. Unless otherwise indicated the issue in effect on date of invitation for bids or request for proposal shall apply. i 2 T I Provided by IHSNot for ResaleNo reproduction or networking perm
8、itted without license from IHS-,-,- MIL-T-L.5087C 47 W 7377906 O272026 L W i MIL-T-15089C (OS) American Society for Testing and Materials ASTM E 8 Standard Method of Tension Testing of Metallic Materials (Application for copies should be addressed to the American Society for Testing and Materials, 1
9、9 16 Race Street, Philadelphia, Pa. 19 103.) 3. REQUIREMENTS 3.1 Chemical composition. The chemical composition shall conform to the requirements given in table 1. *Table I CHEMICAL COMPOSITION I Alloy 20 14 t7GT Element Copper Magnesium Manganese Silicon Iron Chromium zinc Titanium Titanium plus zi
10、rconium Others (each)l Others (total) Aluminum 3.9 0.20 0.40 0.50 - - - _. -. - - Ren (%, max.) 5.0 O. 8 1.2 1.2 0.7 0.10 0.25 0.1 5 0.20 0.05 0.15 nder Alloy 2024 (%, min.) - - Rem (%, max.) 4.9 1.8 0.9 0.50 O. 50 0.10 0.25 0.10 0.25 0.05 0.15 Under lAnalysis shall regularly be made only for the el
11、ements specifically mentioned in the above table. If, however, the presence of other elements is indicated in the course of routine analysis, further analysis shall be made to determine that these other elements are not present in excess of 0.05 percent each, and that the total of these other elemen
12、ts does not exceed 0.15 percent. The material shall not contain these other elements in excess of the above limits. 3.2 Heat treatment. 3.2.1 Process. The process for heat treatment shall be in accordance with the requirements of MIL-H-6088, except as modified herein. 3.2.2 Corrosion. Tubing shall n
13、ot show presence of excessive intergranular attack when tested in accordance with 4.5.2. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I MIL-T-LSOBSC 47 W 7797706 0272027 3 W Class All 1 2,394 MIL-T-15089C (OS) Tensile strength (psi, min) 60,000
14、66,000 64,000 3.3 Mechanical properties. Tubing shall conform to the minimum requirements shown in table II. *Table II MECHANICAL PROPERTIES Alloy ana temper 2014-T651, T6511 2024-T8 1, T85 1 1 Yield strength at 0.2% offset (psi, min) Elongation in 2 inches (%, min) 53,000 58,000 56,000 7 5 4 *3.4 I
15、nternal hydrostatic pressure. When specified, tubing shall be capable of conforming to the hydrostatic pressure test requirements specified on the applicable drawings for the fuished rocket motor (see 6.1 ). *3.5 Dimensional tolerances. Unless otherwise specified, tolerances shall conform - to FED-S
16、TD-245. 3.6 Marking. Each length-of tubing shall be legibly marked parallel to the axis of the tubing at intervals not to exceed nominal length for the finished rocket motor tube (see 6.1). Marking fluid shall be such that the markings produced shall not be removable by normal handling. Marking shal
17、l include the following: a. Manufacturers name or trademark b. Number of this specification c. Class number, alloy, and temper designation d. Lot number tubing *3.7 Workmanship. The tubing shall be seamless and uniform in quality and temper. The exterior and interior surfaces shall be clean, smooth,
18、 and free from slivers, laminations, folds, grooves, cracks, and other injurious defects within the limits consistent with the best commercial practice. Discoloration due to thermal treatment will not be cause for rejection. *4. QUALITY ASSURANCE PROVISIONS *4.1 Responsibility for inspection. Unless
19、 otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use 4 Provided by IHSNot for ResaleNo reproduction or networking permit
20、ted without license from IHS-,-,-MIL-T-L5089C LI7 m 9997706 0272028 5 m I MIL-T-15089C (OS) his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. The Government reserves the right to perform any of the insp
21、ection set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. , *4.2 Sampling. *4.2.1 Lot. A lot shall consist of an identifiable quantity of tubing of the same alloy, temper, and class, traceable to a heat treat
22、 lot or lots, and subjected to inspection at one time. *4.2.2 Sampling for chemical analysis. *4.2.2.1 ingot analysis. At least one sample shall be taken from each group of ingots of the same alloy poured simultaneously from the same source of molten metal by the producer and analyzed to determine c
23、onformance to 3.1. Ingots not conforming to the requirements of this specification shall be rejected. Complete ingot analysis records shall be available, at the producers plant, to the procuring activity. *4.2.2.2 Finished product analysis. When compliance with 4.2.2.1 cannot be established, samples
24、 shall be selected as follows: From tubing having a nominal weight of less than 1 pound per lineal foot, one sample shall be selected from each lot weighing 1,000 pounds or less; from lots weighing more than 1,000 pounds, one additional sample shall be taken for each 1,000 pounds or fraction thereof
25、 in excess of the first 1,000 pounds. From tubing having a nominal weight of 1 pound or more per lineal foot, one sample shall be taken from each lot consisting of 1,000 feet or less; from lot consisting of more than 1,000 feet, one additional sample shall be taken from each 1,000 feet or fraction t
26、hereof in excess of the first 1,000 feet. Only one test specimen shall be taken from any one piece when more than one piece is available. Not more than one analysis shall be required per piece. *4.2.3 Samples for tests. *4.2.3.1 Samples for tensile tests. *4.2.3.1.1 Number of test samples in temper
27、supplied. From tubing having a nominal weight of less than 1 pound per lineal foot, one tension-test sample shall be selected from each lot weighing 1,000 pounds or less; from lots weighing more than 1,000 pounds, one additional sample shall be taken for each i ,000 pounds or fraction thereof in exc
28、ess of the first 1,000 pounds. From tubing having a nominal weight of 1 pound or more per lineal foot, one tension-test sample shall be taken from each lot consisting of 1,000 feet or less; 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-1 5089
29、C (OS) from lots consisting of more than 1,000 feet, one additional sample shall be taken for each 1,000 feet or fraction thereof in excess of the first 1,000 feet. Only one tension test specimen shall be taken from any one piece when more than one piece is available. “4.2.4 Intergranular corrosion.
30、 At least two samples shall be selected from each lot of tubing for the intergranular corrosion tests. Samples shall be taken from different lengths of the tubing and shall each include the complete cross-section of the tubing. Samples shall be taken from the end of the tubing which enters the quenc
31、hing bath last. At least four cross-section specimens, located 90“ apart, shall be cut from each sample for microscopic examination in accordance with FED-STD-15 1 , method 822. . *4.2.5 Sampling for visual and dimensional examination. All tubing shall be examined to determine conformance to this sp
32、ecification with respect to workmanship and identification marking. Examinations for dimensions shall be made to insure conformance to the tolerances specified. On approval of the procuring activity, the supplier may use a system of statistical quality control for dimensional, marking, and workmansh
33、ip examination. *4.3 Examination. “4.3.1 Visual and dimensional examination. Each sample tube selected in accordance with 4.2.4 shall be visually examined and measured to verify conformance to this specification. *4.3.2 Preservation, packaging, packing, and marking for shipment. The preservation, pa
34、ckaging, packing, and marking for shipment shall be examined to determine compliance with the requirements of section 5. “4.4 Test methods. *4.4.1 Chemical analysis. Chemical analysis shall be made by the wet chemical method in accordance with FED-STD-15 1 , method 1 1 1, or by the spectrochemical m
35、ethod in accordance with FED-STD-15 I, method 1 12. “4.4.2 Mechanical properties. “4.4.2.1 Types of specimens. Specimens for tensile testing shall conform to the requirements of ASTM E 8. When practicable, tubing should be tested in full section. For tubing which is not tested in full section, the s
36、tandard 1 /2-inch-wide longitudinal tension test specimen (specimen No. 1 in figure 13 of ASTM E 8) for large diameter tubular products shall be used. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-LSOSC q7 m 777770b 0272030 3 m i MIL-T-15089C
37、 (OS) *4.4.2.2 Location of test specimens. Tension test specimens shall be taken from the tubing in the longitudinal direction. *4.4.2.3 Tende tests. *4.4.2.3.1 Tensile strength. Tensile strength shall be determined in accordance with ASTM E 8. *4.4.2.3.2 Yield strength. The yield strength shall be
38、determined by the offset method in ASTM E 8. *4.4.3 Intergranular corrosion. Intergranular corrosion susceptibility shall be determined in accordance with FED-STD-15 1 , method 822. *4.5 Acceptance and rejection criteria. If any specimen fails to conform to the requirements of this specification, it
39、 shall be cause for rejection of the material represented by the specimen subject to the retest provisions of FED-STD-15 1. When no sampling plan is approved by the procuring agency, and when there is evidence that indicates that a failed specimen was not representative of the lot of material, at le
40、ast two specimens shall be selected to replace each test specimen which failed. All specimens so selected for retest shafi meet the requirements of the specification or the lot shall be subject to rejection. 5. PREPARATION FOR DELIVERY *5.1 Preservation, packaging, and packing. All tubing shall be p
41、reserved, packaged, and packed in accordance with the requirements of MIL-STD-649. Unless otherwise specified (see 6.2), preservation, packaging, and packing shall be level C. *5.2 Marking. In addition to any special marking required in the contract or order, marking for shipment shall be in accorda
42、nce with MIL-STD-649. 6. NOTES *6.1 Ordering data. Procurement documents should specify the following: a. Title, number, and date of this specification b. Alloy, temper, and class (see 1.2) 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-. MILT-1 5
43、089C (OS) c. Applicable drawings (see 2.1) d. Internal hydrostatic pressure testing, if required (see 3.4) e. Tolerances other than those specified in FED-STD-245, if required (see 3.5) f. Level of preservation, packaging, and packing (see 5.1) g. Special marking, if required (see 5.2) *6.3 The marg
44、ins of this specification are marked with an asterisk to indicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidder
45、s and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian: Navy-OS Review: DSA-CS Preparing activity: (Project No. 47 1 O -li336 Navy-OS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
