双相不锈钢2205.pdf

《双相不锈钢2205.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、宝钢双相不锈钢B2205（PlatesheetandcoilforduplexStainlessSteelB2205）---------------------------------------------------------------------------------------------------------------------------------1、B2205概述BriefintroductionofB2205双相不锈钢B2205是由奥氏体和铁素体两相组成的双相不锈钢，具有优良的耐腐蚀性能和力学性能，其屈服强度是300系列不锈钢的两倍，被广泛应用于油气、石

2、化、桥梁、海水淡化以及化学品船等行业。DuplexstainlesssteelB2205ischaracterizedbyaferrite-austenitemicrostructure,whichleadstoagoodcombinationofcorrosionresistanceandmechanicalproperties.TheyieldstrengthofB2205isnearlytwiceasthatof300seriesstainlesssteel.B2205iswidelyusedinindustrysuchasoilandgas,petrochemical,bri

3、dge,seawaterdesalinization,chemicalcargoshipandsoon.图1双相不锈钢B2205典型组织Figure1TypicalmicrostructureofB22052、相关标准RelatedstandardsGB2437-2007022Cr22Ni5Mo3N、022Cr23Ni5Mo3N；GB24511-2009S22253，S22053UNSS31803，S32205EN1.4462共6页第1页3、化学成分Chemicalcomposition表1B2205化学成分Table1ChemicalCompositionofB2205化学成

4、分，wt％，典型值牌号标准号Chemicalcomposition,wt%,TypicalvaluesSteelgradeInternationalStandardsCNCrNiMoS318030.020.1621.55.32.8B2205S322050.020.17225.53.14、力学性能Mechanicalproperties表2B2205退火态力学性能Table2MechanicalpropertiesofB2205insolutionannealedstate力学性能典型值（TypicalMechanicalProperties）厚度（mm）屈服强度(MPa)抗拉强度(M

5、Pa)牌号延伸率(%)硬度(HV)ThicknessYieldStrengthTensileStrengthElongationHardnessRp0.2RmP(15mm)55076846225B2205H(4mm)57081530230C(0.6mm)62388930250表3B2205退火态高温力学性能Table3MechanicalpropertiesathightemperatureofB2205forsolutionannealedproduct最小值（Minimumvalues)典型值(Typicalvalues)温度(℃)R0.2(MPa)Rm(MPa)EL(%)R0.

6、2(MPa)Rm(MPa)EL(%)10037063025453717371503456002543368335200330580224056653225032057020395658293003105602037365528共6页第2页300250200150Akv(J)100500-200-150-100-50050Temperature(℃)图2不同温度下B2205的冲击功（试样尺寸10×10mm，Charpy-V）Figure2Typicalimpactstrengthatdifferenttemperature(Specimensize:10×10mm，Charpy-V)5

7、、耐腐蚀性能Corrosionresistance5.1耐点腐蚀性能Pittingcorrosionresistance图3按照ASTMG150测试获得的B2205临界点蚀温度（CPT）Figure3Criticalpittingtemperature(CPT)ofB2205measuredaccordingASTMG150表4按照ASTMA92306C测试获得的B2205点腐蚀速率Table4PittingcorrosionrateofB2205acco