1、MIL- C - 13 3 58F ( MR i4 June 1990 SUPERSEDING MIL-C-13358E (MR) 4 January 1984 MILITARY SPECIFICATION COBALT-CHROMIUM ALLOY CASTINGS (FOR BARREL TUBE LINERS) This specification is approved for use by the Army Materials Technology Laboratory, Department of the Army, and is available for use by all
2、Departments and Agencies of the Department of Defense, 1.1 Scope. This specification covers one composition of cobalt-chromium alloy casting (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handb
3、ooks form a part of this document to the . extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation (see 6*2) STANDARD
4、S MILITARY MIL-SID-105 MIL-STD-1190 - Minimum Guidelines for Level C Preservation, MIL-STD-1257 - Radiographic and Visual-Soundness Requirements for - Sampling Procedures and Tables for Inspection by Attributes Packing and Marking Cobalt-Chromium Alloy Liners (For Small Arms Barre 1s ) (Unless other
5、wise indicated, copies of federal and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094. ) Beneficial comments ( recommendations, additions, deletions) and any pertinent data which
6、may be of use in improving this document should be addressed to: Director, U.S. Army Laboratory Command, Materials Technology Laboratory, ATTN: SLCMT-MEE, Watertown, MA 02172-0001 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by le
7、tter. AMSC NO. A9210 AREA MECA DISTRIBUTION STATEMENT A Approved for public release; distribution unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-13358F (MR) 2.2 Non-Government publications, The following documents form a part of thi
8、s specification to the extent specified herein. specified, the issues of the documents which are DoD adopted are those listed in the issue of the DODISS cited in the solicitation. specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (s
9、ee 6.2). Unless otherwise Unless otherwise AMERICAN SOCIETY FOR TESTING AND iUTERIALS (ASTM) ASTM D3951 - Standard Practice for Commercial Packaging ASTM E8 ASTM E18 ASTM E354 - Chemical Analysis of High Temperature, Electrical, Magnetic, - Tension Testing of Metallic Materials - Rockwell Hardness a
10、nd Rockwell Superficial Hardness of Metallic Materials and Other Similar Iron, Nickel, and Cobalt Alloys (Applications for copies of ASTM publications should be addressed to the American Society for Testing and Materials, 1916 Race Street, Phila.delphia, PA 19103.) (Non-Government standards and othe
11、r publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services. ) 2.3 Order of precedence. In the event of a conflict between the text of this document and the refere
12、nces cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order (see 6.2 and 6.4), sample ca
13、stings shall be made available to the Procuring Contracting Officer or authorized representative for approval in accordance with 4.4. commencement of shipment but does not relieve the supplier of responsibility for compliance with all applicable provisions of this specification. The first article ca
14、stings shall be manufactured by the process proposed for use on production castings. The approval of the first article samples authorizes the 3.1.1 Process control. When specified in the contract or order (see 6.2), the supplier shall submit a quality program plan (see 6.2.2), outlining the method a
15、nd procedure to-be followed to ensure that castings will meet requirements. When the supplier has demonstrated that castings produced in accordance with this procurement will meet the requirements of this specification, the method and procedure will be approved and shall become a part of this specif
16、ication. Changes or modifications of the approved method and procedure shall not be made without prior written approval of the Procuring Contracting Officer. 3.2 Chemical composi+ “ion. 3.2.1 The chemical compositionof the castings shall conform to the requirements of table I. 2 Provided by IHSNot f
17、or ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-1335BF NE 7797706 OL137027 7 MIL-C-l3358F( MR) TABLE I, Chemical composition, percent. Iron, Manganese, Silicon Carbon Chromium Molybdenum Nickel max max . max. Cobalt 0.20 25.5-29.5 4.5-6.5 1.75-3.25 2.5 1.0 1.0 Rem
18、aining 3.2.2 Master heat. A certified report of the chemical composition of each master heat shall be furnished to the Procuring Contracting Officer by the contractor (see 3.4, 6.2.1 and 6.5). 3.2.3 Product analysis. When specified, a sample of metal from each lot shall be submitted to the Procuring
19、 Contracting Officer for product analysis (see 6.2). 3.3 Mechanical properties. The mechanical properties of the castings shall conform to the requirements of table II when tested in accordance with 4s5.5. TABLE II. Mechanical properties. Rockwell Hardness Tens i le Elongation Average of strength in
20、 1 inch all readings Test (minimum) (minimum) , on a casting Individual temperature p.s.i percent (or test bar) readings Room temperature , 680 to 950F - High tempera- ture, 1,5000F +/-loop 52,000 10 3.4 Production castings and finish machined liners required for visual examination. 3.4.1 Castings.
21、Castings shall be poured directly from a master heat or from remelted master heat metal. Gates, sprues, risers, and rejected castings may be used only in the makeup of a master heat. exceed 15,000 pounds. A master heat shall not 3.4.2 Liners. Liners shall be finish machined from castings in accordan
22、ce with the applicable drawing, the sampling procedure of 4.3.2.3.4.2 and the sampling requirements of MIL-STD-1257. 3.5 Dimensions. Dimensions shall be in accordance with the applicable drawings or as specified in the procurement documents (see 6.2). 3 Provided by IHSNot for ResaleNo reproduction o
23、r networking permitted without license from IHS-,-,-I flIL-C-l1335BF ME m 777770b 0437028 7 . 3.6 Heat treatment. Castings shall be cooled slowly in the mold to a black heat after which time cooling may be accelerated. treatment shall be performed without approval of the Procuring Contracting Office
24、r. No additional heat 3.7 Soundness. 3.7.1 Surface. 3.7.1.1 Castings. Castings shall be free from cold shuts, fins, and other defects detrimental to fabrication or performance of parts. 3.7.1.2 Liners. Liners which have been finish machined from castings in accordance with the applicable liner drawi
25、ng shall comply with the acceptance standards of MIL-STD-1257 or with standards provided in the procurement documents (see 6.2). 3.7.2 Internal. Castings shall meet the radiographic cequirements of MIL-SID-1257 when examined in accordance with 4.5.2. 3.8 Identification marking. Each casting shall be
26、 identified by master heat, inspection lot, and the radiographs thereof. After radiographic examination, each acceptable casting shall be marked with the symbol X. Nethods of applying identifying characters shall be as approved by the Procuring Contracting Officer. Marking materials shall have no de
27、leterious effects on the casting or its performance. 3.9 Repair of castings. Castings shall not be repaired by plugging, peening, or welding. Unless otherwise specified in the contract or purchase order, straightening of castings shall not be permitted. 3.10 Workmanship. Castings shall be uniform in
28、 quality and condition, Castings shall be free from foreign materials and other injurious defects. well cleaned. used for final cleaning. Unless otherwise specifi), metallic shot or grit shall.not be 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the
29、 contract or purchase order, the contractor is responsible for the performance of all inspection requirements (examinations and tests) as specified herein, Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the perform
30、ance of the inspection requirements specified herein, unless disapproved by the Government, The Government reserves the right to perform any of the inspections set forth in this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requiremen
31、ts. 4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3 and 5. The inspection set forth in this. specification shall become a part of the contractors overall inspection system or quality program. specification shall not relieve the contractor of the responsibilit
32、y of The absence of any inspection requirements in the 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-C-13358F NE I 999790b 0437027 O NIL- C- 13 3 58P (MR) ensuring that all products or supplies submitted to the Government for acceptance compl
33、y with all requirements of the contract. Sampling inspection, as part of manufacturing operations, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Governmen
34、t to accept defective material. 4.1.2 Certification of quality compliance. A certificate of quality compliance shall be prepared for each lot of material offered for acceptance (see 6.2.2). and mechanical tests. Qualitative results of nondestructive tests and other inspections or tests shall be reco
35、rded on the certificate. shall also state that each lot has been sampled, tested, and inspected in accordance with the specification and meets all the specification requirements. The certificate shall be signed by the responsible representative of the contractor. The certificate shall include actual
36、 data of specified chemical The certificate 4.2 Classification of inspection. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.4). b. Quality conformance inspection (see 4.5). 4.3 Sampling, 4.3.1 Lot description. A lot shall consist of 3500 p
37、ounds or less of castings of the same size and shape, poured from the same master heat, and submitted for inspection at one time. 4.3.2 Sampling for quality conformance inspection. 4.3.2.1 Sampling for visual and dimensional examination. Sampling of castings for dimensional examination, identificati
38、on marking, and workmanship inspection, shall be in accordance with the provisions of MIL-STD-105, with the AQL as specified in the contract or purchase order (see 6.2). 4.3.2.2 Sampling for packaging, packing and marking. A random sample of shipping containers for the inspections of 4.5.3 shall be
39、selected in accordance with the provisions of MIL-STD-105 and the ABL as specified in the contract or purchase order (see 6.2). 4.3.2.3 Sampling for tests. 4.3.2.3.1 For chemical analysis. At least one sample shall be taken from each lot for chemical analysis. The sample may be taken from test coupo
40、ns or representative castings. 4.3.2.3.1.1 For government product analysis. When specified (see 6.2), a sample shall be taken from each lot and submitted to a designated test facility . 4.3.2.3.2 For tension tests. Four tensile specimens shall be separately cast from the same master heat and under t
41、he same condition as the lot to be 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-l3358F( MR) represented. They shall be cooled at approximately the same rate as castings. Tensile test specimens shall conform to the dimensions of the largest
42、 practicable round specimen of ASTM E8. 4.3.2.3.3 For hardness testa. Sampling of castings for hardness shall be in accordance with the provisions of MIL-STD-105 with the AWL as specified in the contract or purchase order. 4.3.2.3.4 For soundness. 4.3.2.3.4.1 Castings. Each casting shall be radiogra
43、phically examined for soundness. 4.3.2.3.4.2 Liners. Sample castings shall be taken from each lot in accordance with MIL-STD-105 (see 6.2) and shall be forwarded to a testing agency designated by the Procuring Contracting Officer. finish machined to liners and visually examined at the designated age
44、ncy in accordance with MIL-STD-1257 and the AQL as specified in the contract or purchase order (see 6.2). The castings shall be 4.4 First article inspection. When re.quired, the first article castings submitted in accordance with 3.1 shall be inspected for conformance to the item requirements of thi
45、s specification. 4.5 Quality conformance inspection, 4.5.1 Visual and dimensional. Sample castings selected in accordance with 4.3.2.1 shall be inspected to determine conformance to the dimension requirements of 3.5, the idntification marking of 3.8 and the workmanship of 3.10. 4.5.2 Soundness inspe
46、ction. Sample castings and machined liners selected in accordance with 4.3.2.3.4 shall be subjected to radiographic and visual inspection in accordance with MIL-STD-1257 to determine conformance to the requirements of 3.7. Castings shall be radiographed in two positions; the second radiograph shall
47、be taken with castings rotated 90 degrees about the longitudinal axis from the first position. position shall be perpendicular to the longitudinal centerline of the casting and perpendicular to the plane of the radiographic film. specified, film density shall be 1.4 to 2.8 for all the cross sections
48、 (see 6.2). The direction of radiation in each Unless otherwise 4.5.3 Preservation, packaging, packing and marking. The inspection shall ascertain that preservation, packaging and packing of castings and marking of containers, selected in accordance with 4.3.2.2, is in accordance with the requiremen
49、ts of this specification and the contract or purchase order. 4.5.4 Place of inspection. Unless otherwise specified (see 6.2), inspection and tests shall be conducted at the place of manufacture. 4.5.5 Tests. 4.5.5.1 Chemical composition. Chemical analysis shall be conducted in accordance with ASTI4 E354. If any sample fails to conform to the chemical requirements, the lot represented by the sample shall be rejected, 6 Provided by IHSNot for ResaleNo reproduction or networking permi
