1、AMSC N/A FSC 4730DISTRIBUTION STATEMENT A . Approved for public release; distribution is unlimited.INCH-POUNDMIL -PRF -20042E16 September 1999SUPERSEDINGMIL-F-20042D30 March 1984PERFORMANCE SPECIFICATIONFLANGES, PIPE ,BRONZE (SILVER BRAZING)This specification is approved for use by all Departments a
2、nd Agenciesof the Department of Defense.1. SCOPE1.1 Scope . This specification covers 50, 100, 150, 250, and 400 poundsilver brazing bronze pipe flanges for use with water, oil, gas,or steam service not to exceed 425 degrees Fahrenheit ( o F).1.2 Classification . The flanges will be of the following
3、 types,classes, sizes, and ratings as specified (see 6.2).1.2.1 Types . Flanges are of the following types:Type PR - With groove for preinserted rings of silver brazingalloy.Type EF - Without preinserted rings (end or face feed type).1.2.2 Classes, sizes, and ratings . Flanges are of the classes, si
4、zes,and ratings as specified in table I.Beneficial comments (recommendations, additions, deletions) and anypertinent data which may be of use in improving this document should beaddressed to : Commander, SEA 03Q, Naval Sea Systems Command, 2531Jefferson Davis Hwy, Arlington, VA 22242-5160 by using t
5、he StandardizationDocument Improvement Proposal (DD Form 1426) appearing at the end of thisdocument or by letter.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20042E2TABLE I. Classes, sizes, and ratings .Classes NPS(inches)Ratings Applicabl
6、e tablesPlain:50 pounds150 pounds250 pounds400 poundsBrazing rings:50 pounds100, 150,250, and400 pounds14 to 40, inclusive1/4 to 12, inclusive1/4 to 12, inclusive1/4 to 10, inclusive14 to 40, inclusive1/4 to 12, inclusive50 lb/in 2 at 150 o F150 lb/in 2 at 150 o F100 lb/in 2 at 425 o F250 lb/in 2 at
7、 150 o F150 lb/in 2 at 450 o F400 lb/in 2 at 150 o F200 lb/in 2 at 425 o F- - - - - - -VI, X, XIIVII, XI, XIIIXIIIVIII, XIXIVIX, XIXVXVIXVII2. APPLICABLE DOCUMENTS2.1 General . The documents listed in this section are specified insections 3 and 4 of this specification. This section does not included
8、ocuments cited in other sections of this specification or recommended foradditional information or as examples. While every effort has been made toensure the completeness of this list, document users are cautioned that theymust meet all specified requirements documents cited in sections 3 and 4 ofth
9、is specification, whether or not they are listed.2.2 Government documents .2.2.1 Specifications, standards, and handbooks . The followingspecifications, standards, and handbooks form a part of this document to theextent specified herein. Unless otherwise specified, the issues of thesedocuments are t
10、hose listed in the issue of the Department of Defense Index ofSpecifications and Standards ( DoDISS) and supplement thereto, cited in thesolicitation (see 6.2).SPECIFICATIONSFEDERALQQ -B -654 - Brazing Alloys, Silver.(Unless otherwise indicated, copies of the above specifications,standards, and hand
11、books are available from the Defense Automated PrintingService, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.)2.3 Non-Government publications . The following document(s) form a partof this document to the extent specified herein. Unless otherwise specified,the issues of the documents
12、 which are DoD adopted are those listed in theissue of the DoDISS cited in the solicitation. Unless otherwise specified,the issues of documents not listed in the DoDISS are the issues of thedocuments cited in the solicitation (see 6.2).AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME)ASME B46.1 - Surf
13、ace Texture (Surface Roughnes s, Waviness,and Lay). ( DoD adopted)(Application for copies should be addressed to the American Society ofMechanical Engineers, 345 East 47th Street, New York, NY 10017.)Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI
14、L-PRF-20042E3AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM B61 - Standard Specifica tion for Steam or ValveBronze Castings. ( DoD adopted)ASTM B271 - Standard Specification for Copper-Base AlloyCentrifugal Castings.ASTM B505 - Standard Specification for Copper-Base AlloyContinuous Castings.A
15、STM B584 - Standard Specification for Copper Alloy SandCastings for General Applications.ASTM E172 - Standard Practice for Describing andSpecifying the Excitation Source in EmissionSpectrochemical Analysis.ASTM E1282 - Standard Guide for Specifying the ChemicalCompositions and Selecting Sampling Pra
16、cticesand Quantitative Analysis Methods for Metalsand Alloys.(Application for copies should be addressed to the American Society forTesting and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)MANUFACTURERS STANDARDIZATION SOCIETY (MSS)MSS SP-9 - Spot Facing for Bronze, Iron and S
17、teel Flanges.(Application for copies should be addressed to the ManufacturersStandardization Society, 127 Park Street, NE, Vienna, VA 22180-4602.)2.4 Order of precedence . In the event of a conflict between the textof this document and the references cited herein, (except for relatedassociated speci
18、fications or specification sheets), the text of this documenttakes precedence. Nothing in this document, however, supersedes applicablelaws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 Chemical composition . Unless otherwise specified (see 6.2), thechemical compos
19、ition of flanges shall be as specified in ASTM B61, or alloysC92200 or C90300 in accordance with ASTM B271, B505, orB584.3.2 Recycled/recovered materials . Unless otherwise specified herein,all equipment, material, and articles incorporated in the products covered bythis specification shall be new a
20、nd shall be fabricated using materialsproduced from recycled/recovered materials to the maximum extent practicablewithout jeopardizing the intended use. The term “recycled/recoveredmaterials“ means materials which have been collected or recovered from solidwaste and reprocessed to become a source of
21、 raw materials, as opposed tovirgin raw materials. None of the above shall be interpreted to mean that theuse of used or rebuilt products is allowed under this specification unlessotherwise specifically specified.3.3 Type PR, with groove for preinserted rings of silver brazing alloy .3.3.1 Type PR f
22、langes are grooved for preinsert rings of silver brazingalloy. The insert rings shall not be installed in the flange groove by thecontractor. These flanges may be supplied without the silver brazing rings,in which case they shall be ordered separately, or with the rings separatelypackaged and furnis
23、hed with the parent component for installation in thegroove prior to brazing (see 6.2). The preinserted silver brazing rings shallbe of a design to fill the groove shown on figure 1, the minimum internalProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
24、-MIL-PRF-20042E4diameter of which shall be not less than the bore of the hub shown as diameter“S“ on figure 2. Unless otherwise specified (see 6.2), the silver brazingalloy used shall conform to BCuP -5 of QQ -B -654. Machining details shall be asspecified in tables XVI and XVII. Dimensions noted on
25、 figures 1 and 2 shallbe as specified in tables VI through XV.3.4 Type EF, without preinserted rings (end or face feed type) . TypeEF flanges shall be chamfered at the outer end of socket a distance of 0.031inch and at an angle of about 45 degrees with the axis at the socket.3.5 Machining .3.5.1 Fla
26、nge finish . The machined surface finish of gasket matingsurfaces on the flanges shall be in accordance with ASME B46.1 and as follows:(a ) For flanges of a nominal size of 12 inches or less, a finishwith a circular lay (concentric) of 500 to 1000or (spiral) 125 to 250 roughness average ( R a ) prod
27、ucedby machining 30 to 80 serrations of uniform depth per inchof flange face width.(b ) For flanges over a nominal size of 12 inches, the require-requirements shall be the same except that 21 to 80serrations per inch of flange face width may be used.Unless otherwise specified (see 6.2), flanges shal
28、l have the bore of the huband the waterway (diameters “S“ and “T“ as shown on figure 2) machined with afinish of 125 or better. Flanges need not be finished on the rim, providedthey are cast smooth and true. The remaining external surfaces shall not befinished except for bolt hole spot facing.FIGURE
29、 1. Detail dimensions of groove for preinserted ringof silver brazing alloy .Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20042E5FIGURE 2. Detail dimensions of plain flanges .3.5.2 Flange drilling . Unless otherwise specified (see 6.2), fl
30、angesshall be drilled. Flanges shall be spot faced in accordance with MSS SP-9. The number and size of holes shall conform to tables XII through XV accordingto the classification of the flanges furnished.3.6 Dimensions .3.6.1 Socket . In measuring the depth of the socket in all theapplicable tables
31、specified herein, the chamfer shall be included.3.6.2 Flange . Flange dimensions shall be as specified in theapplicable figures and tables.3.6.3 Tolerances . Tolerances shall be plus or minus 0.010 inch fordecimal dimensions, unless otherwise specified herein or as shown in table II.TABLE II. Tolera
32、nces .NPS D O S W1-1/4 and under1-1/2 to 22-1/2 to 1214 and overInch+ 0.125- 0.000+ .125- .000+ .188- .000+ .250- .000Inch+ 0.000- .031+ .000- .031+ .000- .047+ .000- .047Inch+ 0.003- .000+ .005- .000+ .007- .000+ .010- .000Inch+ 0.063+ .063+ .063+ .0633.7 Marking . The size, pressure rating (“50“,
33、“100“, “150“, “250“, or“400“), and “WOG“ shall be legibly and permanently marked on the rim or backface of all flanges for identification.3.8 Workmanship . Flanges shall be sound, smoothly cored, true to form,uniform in texture, and free of adhering sand, hard spots, cold shuts,porosity, or any othe
34、r defects which may affect serviceability. They shall bethoroughly cleaned, inside and outside, and all fins and roughness that areProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20042E6not well rounded shall be blended.4. VERIFICATION4.1 Con
35、formance inspection . Conformance inspection shall consist of theexamination and tests as specified in 4.2 and 4.3.4.1.1 Lot . Flanges of the same type, class, size, and rating presentedat one time shall be considered a lot for purposes of sampling and inspection.4.1.2 Sampling for visual and dimens
36、ional examination . As a minimum,the contractor shall randomly select a sample quantity of completed flanges asspecified in table III and examine them as specified in 4.2 (see 6.3.1).TABLE III. Sampling for visual and dimensional examination .Sample sizeLot size2 to 89 to 2526 to 5051 to 9091 to 150
37、151 to 280281 to 500501 to 1,2001,201 to 3,2003,201 to 10,000Major defectsAll888121921273538Minor defects3356710111518224.1.3 Sampling for hydrostatic pressure leakage test . As a minimum, thecontractor shall randomly select a sample quantity of completed flanges asspecified in table IV and test the
38、m as specified in 4.3.1 (see 6.3.2).TABLE IV. Sampling for hydrostatic pressure leakage test .Lot size Sample size2 to 89 to 151151 to 280281 to 500501 to 1,2001,201 to 3,2003,201 to 10,000All1320293450604.1.4 Sampling for chemical analysis . Samples for chemical analysisshall be taken from one or m
39、ore flanges selected from each melt from which thelot offered was cast, for the analysis specified in 4.3.3.4.2 Examination . Each of the sample flanges selected as specified in4.1.2 shall be examined to verify compliance with all the requirements of thisspecification not involving tests. Examinatio
40、n shall be conducted for defectslisted in table V.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20042E7TABLE V. Classification of defects .Categories DefectsCriticalMajor:101102103104105106107108Minor:201202None defined.Type, class, size an
41、d rating not as specified.Material not as specified.Flanges not sound, smoothly corded, true to form, uniform intexture, not free from cold shuts and porosity.Flanges surface (internal and external) not thoroughly cleaned,fins and roughness not removed.Brazing ring (if specified) missing or not as s
42、pecified.Socket not smooth.Socket dimensions not as specified.Flange dimensions not within tolerance specified.Ends (other than preinserted ring type) not chamfered asspecified.Marking not cast, or stamped incorrect, or illegible.4.3 Test methods .4.3.1 Hydrostatic pressure leakage test . Each sampl
43、e flange selectedas specified in 4.1.3 shall be subjected to a hydrostatic pressure 1 -1/2 timesthe rated pressure for 1 minute. Under the hydrostatic pressure, the fittingshall not leak water or sweat at any part of the surface.4.3.2 Air pressure leakage test . Each flange shall be tested underwate
44、r or with soapsuds at 100 pounds per square inch (lb/in 2 ) (nominal) airpressure (85 lb/in 2 minimum) for 5 to 10 seconds. No leakage is allowed.4.3.3 Chemical analysis . Each sample flange selected as specified in4.1.4 for chemical analysis shall be tested in accordance with ASTM E172 orASTM E1282
45、 to determine conformance to 3.1.5. PACKAGING5.1 Packaging . For acquisition purposes, the packaging requirementsshall be as specified in the contract or order (see 6.2). When actualpackaging of material is to be performed by DoD personnel, these personnelneed to contact the responsible packaging ac
46、tivity to ascertain requisitepackaging requirements. Packaging requirements are maintained by theInventory Control Points packaging activity within the Military Department orDefense Agency, or within the Military Departments System Command. Packagingdata retrieval is available from the managing mili
47、tary Departments or DefenseAgencys automated packaging files, CD -ROM products, or by contacting theresponsible packaging activity.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-20042E86. NOTES(This section contains information of a general
48、or explanatory naturewhich may be helpful, but is not mandatory.)6.1 Intended use . The installation of these flanges is intended to beaccomplished by silver brazing without exceeding a temperature of 1500 o F. Thefittings are intended for use with the following or their equivalentcommercial pipe st
49、andards:Material SpecificationCopper tube MIL -T -24107Copper - nickel alloy tube MIL -T -16420Brass tube MIL -T -20168Nickel -copper alloy tube MIL -T -13686.2 Acquisition requirements . Acquisition documents must specify thefollowing:(a) Title, number, and date of the specification.(b) Type, class, size, and rating required (see 1.2).(c) Issue of the DODISS to be cited in the solicitation, andif required, the specific issue of individual d
