EN ISO 7231-1997 软质泡沫聚合材料.恒定压降下的空气流量评估方法
时间:2024-05-14 18:30:28 来源: 标准资料网 作者：标准资料网 阅读：8282
【英文标准名称】:Polymericmaterials,cellularflexible-Methodofassessmentofairflowvalueatconstantpressure-drop(ISO7231:1984);GermanversionENISO7231:1997
【原文标准名称】:软质泡沫聚合材料.恒定压降下的空气流量评估方法
【标准号】:ENISO7231-1997
【标准状态】:现行
【国别】:
【发布日期】:1998-01
【实施或试行日期】:
【发布单位】:欧洲标准学会(EN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;试样;橡胶技术;试验;方法;试验条件;泡沫橡胶;材料试验;气体流动;压头损失;测定;透气率;空气;多孔材料
【英文主题词】:Air;Airpermeability;Cellularmaterials;Definition;Definitions;Determination;Foamedrubber;Gasflow;Headlosses;Materialstesting;Methods;Rubbertechnology;Testspecimens;Testing;Testingconditions;Tests
【摘要】:
【中国标准分类号】:G32
【国际标准分类号】:83_100
【页数】:8P.;A4
【正文语种】:英语
【英文标准名称】:StandardSpecificationforGeneralRequirementsforSpecializedCarbonandAlloySteelPipe
【原文标准名称】:特种碳素钢和合金钢管一般要求的标准规范
【标准号】:ASTMA530/A530M-2003
【标准状态】:作废
【国别】:美国
【发布日期】:2003
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:碳素钢;管;规范(验收);合金钢;钢
【英文主题词】:alloysteels;steels;pipes;specification(approval);carbonsteels
【摘要】:
【中国标准分类号】:H48
【国际标准分类号】:23_040_10
【页数】:8P;A4
【正文语种】:英语
Product Code:SAE AMS3892/5
Title:Tow or Yarn, Carbon Fibers For Structural Composites, GF 220 (1517) Tensile Strength, 75 (517) Tensile Modulus
Issuing Committee:Ams P Polymeric Materials Committee
Scope: This specification covers one type of continuous multifilament carbon fibers in the form of a tow or yarn (when twisted). The weight per unit length of the tow or yarn is governed by the filament count which is identified by the supplier's grade or material designation. Carbon tow or yarn, derived from a polyacrylonitrile precursor, with typical 220 ksi (1517 MPa) tensile strength and 75 Msi (517 GPa) tensile modulus for use in general purpose structural composites requiring very high modulus of elasticity and moderately high tensile strength.