1、QQ-B-637B 75 W 7777774 0007358 8 W G“ ak- 3 . QQ-B-639B October 18, 1973 SUPERSEDING Fed Spec. QckB.639a March 14, 1967 FEDERAL SPECIFICATION BRASS, NAVAL : FLAT PRODUCTS (FLATE, BAR, SHEET, AND STRIP) This specification was approved by the Conmissioner, Federal Supply Service, General Semces Admini
2、stra- tion, for the use of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.1 Scope. This specif cation covers four alloys of leaded. and. nonlead.ed. naval brass flat prod.ucts (bar, plate, sheet, and. strip) with slit, slit and ed.ge-Tolled, sheared, sawed, or machined edges, but d.oes not incl
3、ude flat products- with finished. edges (see 6.6). 1.2 Classification. 1.2.1 Alloss. The naval brass covered by this specification shall be furnished in the followingalloys: 462, 464, 482, and 485. When the alloy is not specified, copper alloy number 464 shall be furnished. . 1.2.2 Forms and tempers
4、. The naval brass covered. by this specification shall be furnished. in the following forms and tempers, as specified (see 6.2) : Form Temper Plate, sheet, and. bar Soft Half-bard. Strip Soft Half - hard Hard. When temper is not specified, plate, bar, sheet, and strip shall be furnished. in the half
5、-hard temper. 2. APPLICABLE DOCWNTS 2.1 The following d.ocuments,of the issues in.effect on the date of invita- tion for bids or request for proposal, form a part of this specification to the extent specified herein: Provided by IHSNot for ResaleNo reproduction or networking permitted without licens
6、e from IHS-,-,-Federal Standard-s : Fed, Std. No. 123 - Marking for Domestic Shipment (civil Agencies). Fed, Std No, 146 - Tolerances for Copper and Copper Base Alloy Mill Proauc ts . Fed. Test Method Std No. 151 - Metals; Test Meth0d.s. Fed. Std . No. 185 - Identification Marking of Copper and. Cop
7、per Base Alloy Mill Products. (Activities 0utsid.e the Federal Government may obtain copies of Federal Specifi-cations, Standards, and Handbooks as outlined. under General Information in the Index of Federal Specifications and. Standards and at the prices indicated in the Index. The Index, which inc
8、ludes cumulative monthly supple- ments as issued, is for sale on a subscription basis by the Superintend.ent of Documents, U.S. Government Printing Office, Washington, D.C. 204.02. (Single copies of this specification and other Federal Specifications required by activities outside the Federal Govern
9、ment for bidding purposes are available without charge from Business Service Centers at the General Services Administration Regional Offices in Boston, New York, Washington, DC, Atlanta, Chicago, Kansas City, MO, Fort Worth, Denver, San Francisco, Los Angeles, and Seattle, WA. (Federal Government ac
10、tivities may obtain copies of Federal Specifications, Standards, and Handbooks and the Ind.ex of Fed.era1 Specifications and Standards from established d.istribution points in their agencies, ) MilitaW Specification: MIL-G3993 - Copper and Copper Base Alloy Mill Products, Packaging of. Military Stan
11、dard.s : MILSTD-105 - Sampling 2roced.ures and. Tables for Inspection by Attributes. kiXA3TD-129 - Marking for Shipment and Storage. (Copies of Military Specifications and Standards required. by suppliers in connection with specific procurement functions should be.obtained from the procuring activit
12、y or as directed by the Contracting Officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless a specific issue is identified., the issue in effect on date of invitation for bids or request for proposal shall apply. American Soc
13、iety for Testing and. Materials (ASTM) Standads: B U,!+ - Mercurous Nitrate Test for Copper and. Copper Alloys E 8 - Tension Testing of Metallic Materials. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Application for copies should. be addressed t
14、o the American Society for Testing and Materials, 1916 Race Street, Philad.elphia, Pennsylvania 19103*) (Technical society and technical association specifications and. standards are generally available for reference from libraries, They are also distrib- uted among technical groups and using Federa
15、l agencies. ) 3. REQUIREhENTS 3.1 Manufacture. The material shall be manufactured by such hot or cold working followed by such annealing, and straightening as may be required to produce naval brass conforming to the requirements of this specification. 3.2 The material shall be furnished. in flat, st
16、raight lengths unless material in rolls or on reels or bucks is specified (see 6.2). . 3.3 Chemical comDosition. 3.3.1 The material shall conform to the chemical requirements specified in table I. TABLE 1. Chemical composition, percent Copper Other Number Copper Tin Lead Iron- elemeny totall Zinc 0.
17、10 Rem. 59.0 - 62.0 .50 - 1.0 04 - 1.0 10 .10 Rem. 59.0 - 62.0 .50 - 1.0 1.3 - 2.2 10 .10 Rem. Alloy 462 62.0 - 65.0 0.50 - 1.0 0.2r I/ 0.10 464 59.0 - 62.0 .50 - 1.0 .2d/ .10 .10 Rem. :E= 3,3.2. Analysis shall be mad.e regularly only for the elements specifically stated in table I. If the presence
18、of other elements is suspected., or indicated in the course of routine analysis, further analysis shali be mad.e to determine that the total of other elements is not in excess of the limits specified, 3.4 Tensile BroDerties. The material shali conform to the tensile properties specified in tables II
19、, III, IV, and V for the respective tempers. TABLE II. Tensile properties of copper alloy number 462 . Tensile Yield. Elongation Thickness, strength,. strength) in 4 x2Thickness, Form and temper inches min., k.s.i. min .L( k. S. i, min. ,- percent Bar, soft All sizes 45 16 30 Bar, half-hard sizes 54
20、 25 20 P. ypetermined at 0.5 percent extension under load. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QQB-639B TABLE III. Tensile properties of copper alloy number 464 Form and temper Bar. and plate, soft Bar and plate, half-hard Sheet and strip
21、, soft Sheet and. strip, half- hard Strip, hard Aoetermined at 1 Thickness, inches O. 375 and less up to 0.375 and less over Over 0.375, all wid.ths 30 inches wide 30 inches wide O. 375 and less up to O. 375 and less over Over O. 375, all wid.ths 30 inches wide 30 inches wide All sizes All sizes All
22、 sizes 5 percent extension “ und.er load. Tensile strength) min., k.s.i. 52 50 50 60 57 54 52 60 65 Yield. min. strenfF ,- k.s.i. 20 20 20 35 28 25 20 35 50 L/ In any case, a minimum gage length of 1 inch shall be used. TABLE IV. Tensile properties of copper alloy number 482 Form and temper Bar and.
23、 plate, soft Bar and. plate, half-hard. I +/,Determined at Thickness, inches 0,375 and less up to O. 375 and. less over Over 0.375, all widths 0,375 and. less up to 0.375 and less over Over 0.375. all widths ,5 percent extension unde 30 inches wide .3O inches wide 30 inches wide 30 inches wide Tensi
24、le strength, min., k.s.i. 52 50 50 60 57 _5L, load., strenfYl, Yield. min. ,- k-. s . i , 20 20 20 35 28 25 L/In any case, a minimum gage length of 1 inch shall be used. Elongation in four times thickneP, min., percent 30 35 35 20 30 30 30 20 10 Elongation in four times percent 30 35 35 20 30 Provid
25、ed by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-QQ E639B TABLE V. Tensile properties of copper alloy number 485 -Form and temper Bar and plate, soft Bar and plate, half - hard. Sheet and strip, soft Sheet and strip, half-hard Strip, hard. LIDetermined. at
26、1 Thickness, inches 0.375 and. less, up to 0.375 and less, over Over O. 375, all wid.ths 30 inches wide 30 inches wide 0.375 and less, up to 0.375 and. less, over Over 0.375, all widths 30 inches wide 30 inches wide All sizes All sizes All sizes 5 percent extension und.er Tensile strength min., k.s.
27、i. 52 50 50 60 57 54 52 60 65 load. Yield mm. strenP ,- k.s.i. 20 20 20 35 28 25 20 35 50 Elongation in four times thickness min. ,- 2/ percent 30 35 35 20 30 30 30 20 10 2/In any case, a minimum gage length of 1 inch shall be used. 3.4.1 Where material is required. in special forms and. tempers oth
28、er than those specified. in tables II, III, IV, and. V, the material shall be d.efined. and specified (see 6.2). 3.5 Internal stresses. Unless otherwise specified (see 6.2), naval brass, except material of soft (finished annealed.) temper, shall withstand. without cracking the mercurous nitrate test
29、 specified. in4.6.3 3.6 Heat treatment. Heat treatment, if any,. shall be such as to obtain mechanical properties, structure and temper required by this specification. When specified. (see 6.2), soft material shall be finish annealed. whether previously hot or cold rolled 3.7 Dimensional tolerances.
30、 The following references of Fed, Std. No. 146 shall apply : 5 d Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Dimension I Reference 3.8 1d.entification marking. When specified (see 6.2), product identifica- tion marking shall be in accord.ance wit
31、h Fed Std No. 185. 3.9 Workmanship. Material shall be uniform in quality and temper, clean, sound., smooth, and free from foreign material, pipes, slivers, laps, cracks, seams, scale, burrs, buckles, damaged ends or edges, and. other defects which, d.ue to their nature, d.egree, or extent, d,etrimen
32、tally affect the serviceability for the intend.ed parts. When some characteristic of workmanship is especially important to the serviceability of the intend.ed. parts, this information shall be included along with the character of the application of material in the ordering d.ata (see 6.2). 4, QUALI
33、TY ASSURANCE PROVISIONS 4.1 ResDonsibility for inspection. Unless otherwise specified. in the Con- tract or purchase ord.er, the supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise speci- fied in the contract or order, the supplier may
34、use his own or any other facilities suitable for the performance of the inspection requirements speci- fied herein, unless disapproved. by the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to
35、 msure that supplies and services conform to prescribed requiremenb. 4.2 m. Unless otherwise specified. (see 6.2), a lot shall consist of material of the same alloy, form, temper, and size submitted. for inspection at one time consisting of: a. 10,000 pounds or fraction thereof or b. the mixture of
36、two or more furnace charges or crucible melts weighing not mre than 70,000 pounds into a single idle or hold.ing furnace used. to pour one or more irigoks at the same time, 4.3 SamDlinq. Samples for the purpose of tests prescribed. in this specifi- cation shall be selected in a manner as to correctl
37、y represent the material furnished. and. avoid need.less d.estruction of finished. material when samples representative of the-material are available- from other sources, .6 . .- . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.1 For chemical an
38、alysis. The number of samples specified. in table VI shall be selected from d.ifferent pieces in each lot. The selected pieces shall be used. to prepare samples for analysis in accordance with method. 111 or 112 of Fed Test Method. Std. No. 151. TABLE VI. Sampling for chemical analysis P0und.s of ma
39、terial Number of in lot Sardes a/ Up to 2500, incl. 1 2501 to 5000, incl. 2 5001 to 7500, incl. 3 7501 to 10,000, incl. 10,001 to 70,000, incl. 42/ 1- L/If, the number of original bars, billets, or cakes from which the material is processed is less than the number of samples, not more than one sampl
40、e need be taken from-each piece. 2/See 4.2b. * 4.3.2 For tension test. Unless otherwise specified. (see 6.2), two tension- test specimens shall be taken from each lot, and. each shall be selected from a d.ifferent piece unless the lot consists of one piece in which case one test specimen shall be su
41、fficient. If the lot is 2500 lbs. or less, only one tension test is required. 4.3.3 For mercurous-nitrate test. Unless otherwise specified- ( see 6.2), one sample for the mercurous-nitrate test shall be selected. from each lot of naval brass, except material in the soft (finished. annealed.) temper.
42、 4.3.4 For visual and. d.imensiona1 examination. 4.3.4.1 Pieces weighing over 150 p0und.s. Each piece shall be examined 4.3.4.2 Pieces weighing 150 p0und.s or less, From each lot of material with pieces weighing 150 pounds or less, a representative sample shall be selected. in accordance with MILSTD
43、-105, inspection levelI1, with an accept- able quality level (AQL) of 1.5 percent d.efective. The samples- selected for dimensional examination may be the same as those selected for visual examina- tion, but shall be evaluated. separately. 4.3.4.3 When material is furnished in rolls or on reels, or
44、bucks, the sample for examhation shall be taken from within 10 feet of the outer end. If the sample selected is rejected due to hand.ling marks, an ad.d.itiona1 20 feet shall be used for re-examination Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
45、4.3.4.4 When material is, as straightened, from coils, rolls, reels, or bucks the sample for examination shall be taken from within 10 feet of the starting end of each coil, roll, reel or buck. If the sample selected. is rejected. due to hand.ling marks an ad.d.itiona1 20 feet of each coil, roll, re
46、el or buck shall be used for re-examination. 4.4 Examination. 4.4.1 Visual and. dimensional. Pieces selected. in accordance with 4.3.4 shall be visual has limited. hot workability, It is intended. for use when cold. working, bending, forming, or shaping is required 6.1.2 Copper alloy number 464 poss
47、esses excellent hot working properties with fair machinability, It consists of both alpha and. beta gains; is hot workable but hard.ens rapidly on cold. working, 6.1.3 Copper alloy number 482 possesses good hot working properties and. good machinability. It consists of both alpha and. beta grains; i
48、s moderately hot workable but hardens rapidly on cold. working. The material is intended for use when free machining is required Copper alloy number 482-is more machinable than copper alloy number 464. 6:1.4 Copper alloy number 485 possesses good hot working properties, and. the machinability is bet
49、ter than copper alloy numbers 464 and. 482. It consists of both alpha and beta grains; is mod.erately hot workable but hardens rapidly on cold working. The material is intend.ed. for use when free machining is required and may be used. for the following: Marine hard.ware Applications where a corrosion-resisting material is needed 6.2 Ordering d.ata. Purchasers should select the preferred options permitted herein, and inc1ud.e the foll
