NAVY MIL-HDBK-270 A-1991 METALLIC MATERIALS FOR LOW MAGNETIC APPLICATIONS MAGNETIC PERMEABILITY AND ELECTRICAL CONDUCTIVITY CHARACTERISTICS OF (METRIC)《低磁性敷剂的金属物质 磁性渗透和电子传导特征(衡量标准).pdf
《NAVY MIL-HDBK-270 A-1991 METALLIC MATERIALS FOR LOW MAGNETIC APPLICATIONS MAGNETIC PERMEABILITY AND ELECTRICAL CONDUCTIVITY CHARACTERISTICS OF (METRIC)《低磁性敷剂的金属物质 磁性渗透和电子传导特征(衡量标准).pdf》由会员分享,可在线阅读,更多相关《NAVY MIL-HDBK-270 A-1991 METALLIC MATERIALS FOR LOW MAGNETIC APPLICATIONS MAGNETIC PERMEABILITY AND ELECTRICAL CONDUCTIVITY CHARACTERISTICS OF (METRIC)《低磁性敷剂的金属物质 磁性渗透和电子传导特征(衡量标准).pdf(97页珍藏版)》请在麦多课文档分享上搜索。
1、uMETRICMIL-HDBK-270A(SH)19 March 1991SUPERSEDINGDOD-HDBK-270(SH)1 June 1983(see 64)MILITARY HANDBOOKMETALLIC MATERIALS FOR fJ3WMAGNETIC APPLICATIONS,MAGNETIC PERMEABILITY AND ELECTRICAL CONDUCTIVITY ,CHARACTERISTICS OF (METRIC)AMSC N/A FSC 35G?DISTRIBUTION STATEMENT A. Approved for public release ;
2、distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-HDBK-270A(SH)FOREWORD1. This handbook is approved for use by the Naval Sea Systems Command,Department of the Navy, and is available for use by all Departments aidAgencies o
3、f the Department of Defense.2. Beneficial comments (recommendations, additions, deletions ) and anypertinent data which may be of use in improving this document should beaddressed to: Commander, Naval Sea Systems Command, SEA 5523, Department ofthe Navy, Washington, DC 20362-5101 by using the self-a
4、ddressed Standard-ization Document Improvement Proposal (DO Form 1426) appearing ac the end ofthis document or by letter.3. This document provides basic and fundamental information on the magneticpermeability and electrical conductivity characteristics of metals and alloys.The handbook is not intend
5、ed to be referenced in purchase specificationsexcept for informational purposes, nor shall it supersede any specificationrequirements.k. Every effort has been made to reflect the latest information on themagnetic permeability and electrical conductivity characteristics of themetals and alloys listed
6、. It is the intent to review this handbookperiodically to ensure its completeness and accuracy.5. This handbook provides design engineers and equipment a75anufacturers withgeneral information on magneci.c permeability and electrical conductivitycharacteristics of metals and alloys used in the manufa
7、cture of equipment chatwill be used in maenetic sensitive areas aboard Naval shiDs The a75etals andalloys included are primarily those having low (less than 2.O) relativemagnetic permeability in the mill annealed condicion. However, ocher metalsand alloys with higher magnetic permeability are also i
8、ncluded because theiruse in equipment is dictated by consideration of other properties that are notalways available in low magnetic permeability materials6. The values given herein should be considered as “typical” They areintended to show the relative effect of cold-working operations on thecharact
9、eristics cited.7. The numeric values for properties listed in this handbook, that werederived from specifications , standards , handbooks , a“d ocher publications ,reflect the values in issues in effect on the date of the approval of thishandbook. Because of che revisions of or amendments to these d
10、ocuments afterpublication, the handbook values may differ from those shown in the currentspecifications , standards and handbooks When used in acquisition, it shouldbe understood that the governing requirements are those of the documents ofthe issue in effecc on the date of invitation for bids or re
11、quest forproposal.iiProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t41L-HDBK-270A(Stl”)CONTENTSParagraph 1.1.11.1.11.1,22.2.12.1.12.22.33.3.13.1.13.1.1.13.1.23.1.33.1.43.1.53.1.63.1.74.4.14.1,14.1.25.5.15.25.35.45.55.65.6.15.6.1.15.6.1.25.6.1.35.6.1
12、.L6.6.16.26.36.4SCOPE . . . . . . . . . . . . . . . . . . . . . . 1Scope . . . . . . . . . . . . . . . . . . . . .1Application . . . . . . . . . . . . . . . . . . . 1Arrangement of handbook . . . . . . . . . . . . . 1APPLICABLE DOCUMENTS . . . . . . . . . . . . . . 1Government documents . . . . . .
13、. . . . . 1Specificati0n9, standards and handbooks . . . 1Non-Government publications . . . . . . . 7Order of precedence . . . . . . . . . . . . 16DEFINITIONS . . . . . . . . . . . . . . . . . 16General . . . . . . . . . . . . . . . . . 16Cold work . . . . . . . . . . . . . 16Percent cold work. . .
14、. . . . . . . . 16Normal a75agnetic permeability . . . . 16Other magnetic permeability . . 16Unified numbering system (UNS) . 17Acronyms. . . . . . . . . . . . 17Atomic symbols . . . . . . . . 17Column headings in tables I through IX . . 17GENEWL REQUIREMENTS . . . . . . . . . . . . . . . 18Metals .
15、 . . . . . . . . . . . . . . . . . .18Chemical composition. . . . . 18Magnetic permeability and electrical conductivity 19DETAILED REQUIREMENTS . . . . . . . . . . . . . .Aluminum alloys. . . . . . . . . . . . .Copper alloys . . . . . . . . . . . .Nickel alloys . . . . . . . . . . . . . . . . . .Tic
16、aniuin alloys . . . . . . . . . . .Miscellaneous a75etals . . .Iron alloys . . . . . . . . . Corrosion resistant (stainless ) steels . .Wrought auscenitic corrosion resistant steelsPrecipitation hardenable corrosion resistant steelsCase austenitic corrosion resistant steelsAustenitic manganese Steel
17、s . .191919191919191919192020NOTES., . . . . . . . . . . . . . . . . . . . . . .Intended use. . . . . . . . . . . . .Issue of DODISS . . . . . . . . . . . . . . .20Subject term (key word) listing . . 20Changes from previous issue 20. . .111Provided by IHSNot for ResaleNo reproduction or networking p
18、ermitted without license from IHS-,-,-MIL-HDBK-270A(SH)Table I.II.III.IV.v.VI.VII.VIII .IX.x.XI.XII.XIII.XIVxv.TABLESAluminuin alloys . . . . . . . . . . . . .Cqpralloys . . . . . . . . . . . . . . . Nickel alloys . . . . . . . . . . . . . . . . . .Titanium alloys . . . . . . . . . . . . .Miscellane
19、ous metals . . . . . . . . . . . . . . .Wrought austenitic corrosion resistant steels . .Precipitation hardenable corrosion resistant steelsCast austenitic corrosion resistant steels . . .Austenitic manganese steels . . . . . . . . .High strength steels. . . . . . . . . . . . .Data sources . . . . .
20、 . . . . . . . . . . . . . .Government specification to WNS number cross indexCommercial specification to UNS number cross indexWNS to Government specification cross index .Index ofcrmmon names. . . . . . . . . . .213441/$44748586067686970758490ivProvided by IHSNot for ResaleNo reproduction or netwo
21、rking permitted without license from IHS-,-,-MIL-HDBK-270A(SH)1. SCOPE1.1 . This handbook provides the following technical data andinformation for metals and alloys (in particular, aluminum, copper, nickel,and titanium alloys, and corrosion-resisting stainless steel) : .(8) Common name.(b) Commercia
22、l designation.(c) UNS (unified numbering system) number.(d) Chemical compositiori.(e) Applicable Government and commercialspecifications.(f) Normal and other magnetic permeabilities atselected percentages of cold-working.(g) Electrical conductivity.(h) Magnetic permeability and electricalconductivit
23、y data source.1.1.1 Armlication. This document does not relieve the equipmentmanufacturers from meeting magnetic permeability requirements. afterfabrication regardless of any a75aterials that were selected because ofconclusions drawn from this handbook.1.1.2 Arrangement of handbook. Tables I through
24、 V contain data andinformation. on non-ferrous alloys. Tables VI through IX concain data andinformation on iron alloys. Table X contains high strength steels (HY 80 and.HY 100) . Table XI lists magnetic permeability and electrical conductivitydata sources. Each source has been assigned a number that
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