SAE AMS5794 Iron Alloy, Corrosion and Heat Resistant, Welding Wire 31fe 21cr 20ni 20co 3.0mo 2.5w 1.0cb 0.15n Annealed
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来源:标准资料网
Product Code:SAE AMS5794
Title:Iron Alloy, Corrosion and Heat Resistant, Welding Wire 31fe 21cr 20ni 20co 3.0mo 2.5w 1.0cb 0.15n Annealed
Issuing Committee:Ams F Corrosion Heat Resistant Alloys Committee
Scope:This specification covers a corrosion and heat resistant iron alloy in the form of welding wire.
基本信息
| 标准名称： | 家用缝纫机挑线摇杆技术条件 |
| 中标分类： |
轻工、文化与生活用品 >>
钟表、自行车、缝纫机 >>
缝纫机 |
| 替代情况： | 原标准号ZB/T Y17029-1990 |
| 发布部门： | 国家轻工业局 |
| 发布日期： | 1999-04-21 |
| 实施日期： | 1999-04-21 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 国家轻工业局行业管理司 |
| 归口单位： | 全国缝纫机标准化中心 |
| 起草单位： | 上海缝纫机研究所 |
| 起草人： | 李明章、沈建新 |
| 出版社： | 中国轻工业出版社 |
| 出版日期： | 1999-04-21 |
| 页数： | 5页 |
适用范围
本标准规定了家用缝纫机挑线摇杆的技术要求、试验方法和检验规则。
本标准适用于JB型缝纫机的挑线摇杆。
前言
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目录
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引用标准
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所属分类： 轻工 文化与生活用品 钟表 自行车 缝纫机 缝纫机
【英文标准名称】:StandardTestMethodsforFlexuralPropertiesofUnreinforcedandReinforcedPlasticsandElectricalInsulatingMaterials
【原文标准名称】:非增强和增强塑料和电绝缘材料的挠性特性的标准试验方法
【标准号】:ASTMD790-2010
【标准状态】:现行
【国别】:美国
【发布日期】:2010
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:flexuralproperties;plastics;stiffness;strength;Electricalinsulatingplastics;Flexuraltesting--electricalinsulatingmaterials;Flexuraltesting--plastics;Reinforcedplastics;Stiffness--plastics;Unreinforcedplastics
【摘要】:Flexuralpropertiesasdeterminedbythesetestmethodsareespeciallyusefulforqualitycontrolandspecificationpurposes.Materialsthatdonotfailbythemaximumstrainallowedunderthesetestmethods(3-pointbend)maybemoresuitedtoa4-pointbendtest.Thebasicdifferencebetweenthetwotestmethodsisinthelocationofthemaximumbendingmomentandmaximumaxialfiberstresses.Themaximumaxialfiberstressesoccuronalineundertheloadingnosein3-pointbendingandovertheareabetweentheloadingnosesin4-pointbending.Flexuralpropertiesmayvarywithspecimendepth,temperature,atmosphericconditions,andthedifferenceinrateofstrainingasspecifiedinProceduresAandB(seealsoNote7).Beforeproceedingwiththesetestmethods,referenceshouldbemadetotheASTMspecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintheASTMmaterialspecificationshalltakeprecedenceoverthosementionedinthesetestmethods.Table1inClassificationSystemD4000liststheASTMmaterialspecificationsthatcurrentlyexistforplastics.1.1Thesetestmethodscoverthedeterminationofflexuralpropertiesofunreinforcedandreinforcedplastics,includinghigh-moduluscompositesandelectricalinsulatingmaterialsintheformofrectangularbarsmoldeddirectlyorcutfromsheets,plates,ormoldedshapes.Thesetestmethodsaregenerallyapplicabletobothrigidandsemirigidmaterials.However,flexuralstrengthcannotbedeterminedforthosematerialsthatdonotbreakorthatdonotfailintheoutersurfaceofthetestspecimenwithinthe5.0%strainlimitofthesetestmethods.Thesetestmethodsutilizeathree-pointloadingsystemappliedtoasimplysupportedbeam.Afour-pointloadingsystemmethodcanbefoundinTestMethodD6272.1.1.1ProcedureA,designedprincipallyformaterialsthatbreakatcomparativelysmalldeflections.1.1.2ProcedureB,designedparticularlyforthosematerialsthatundergolargedeflectionsduringtesting.1.1.3ProcedureAshallbeusedformeasurementofflexuralproperties,particularlyflexuralmodulus,unlessthematerialspecificationstatesotherwise.ProcedureBmaybeusedformeasurementofflexuralstrengthonly.TangentmodulusdataobtainedbyProcedureAtendstoexhibitlowerstandarddeviationsthancomparabledataobtainedbymeansofProcedureB.1.2Comparativetestsmayberuninaccordancewitheitherprocedure,providedthattheprocedureisfoundsatisfactoryforthematerialbeingtested.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesprovidedinparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThesetestmethodsarenottechnicallyequivalenttoISO178.
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:11P.;A4
【正文语种】:英语
