c350l0是什么钢（c250钢）
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今天给各位分享c350l0是什么钢的知识，其中也会对c250钢进行解释，现在开始吧！
澳大利亚牌号AS1163或AS350的钢材对应的国内牌号是什么？
as1163?你指的应该是grade?c350?RHS
下面是一些解释
AS1163?-?C350L0
Grade?C350L0?has?a?higher?yield?strength?than?grade?C250L0,?which?means?that?lighter,?more?economical?sections?can?be?used?to?replace?heavier?sections?in?many?applications.
Australian?Tube?Mills?Grade?C350L0?steels?are?fully?compliant?with?AS?1163?and?can?be?readily?processed?to?Australian/New?Zealand?Standards?and/or?industry?practice?for:
General,?mechanical,?piping?and?structural?fabrication
Rolling/bending?member?lengths
Welding
Galvanizing
Surface?preparation?for?top?coats
End?processing?(screwed,?swaged)
–?for?CHS.
Due?to?the?refined?chemistry?and?higher?level?of?working?during?the?coil?and?tube?manufacturing?process,?C350L0?steel?grade?is?available?in?the?following?ATM?tubular?products:
CHS
RHS
UniRail
StockRail
Other?sections?based?on?enquiry.
ATM?Grade?C350L0?steel?products?are?rated?to?meet?AS?1163?(Table?4)?Charpy?V-Notch?impact?test?requirements?at?the?test?temperature?of?0C?(i.e.?L0).?This?property?is?important?for?use?in?lower?temperatures?and?also?critical?for?non-brittle?behaviour?of?tubular?products?subject?to?dynamic?loads?–?particularly?for?thicker?sections?and
welded?connections.
The?mid-to-higher?strength?properties,?ductility?and?ability?to?satisfy?the?above?performance?criteria?of?Grade?C350L0?is?achieved?by?the?following?material?characteristics?as?required?by?AS?1163.
Specifications?and?Standards
Minimum?Yield?Strength:?350?MPa?(a?measure?of?how?strong?the?tube?is?–?see?Table?3).
Standard?designation:?AS?1163?–?C350L0?see?definition?at?the?end?of?this?Guide).
Steelmaking?process:?Fine-grain?continuously-cast?practice.
Product?manufacture:?Cold-forming?and?high?frequency?Electric?Resistance?Welding?(ERW)?of?steel?strip.?The?cold-forming?process?enhances?the?strength,?hardness?and?surface?finish?of?the?manufactured?product.
Chemical?composition:?See?Table?4?which?applies?to?steelmake?cast?analysis?and?finished?product?analysis.
Carbon?Equivalence?(CE):?0.39?–?see?Table?4?for?details.
Welding?Code?Steel?Type:?Type?5?(from?Table?4.6.1(B)?of?AS/NZS?1554.1?and?Table?4.5.1(B)?in?AS/NZS?1554.5).
Mechanical?properties:?See?Table?3?for?tensile?test?and?below?for?impact?test?requirements.?For?cold-flattening?tests,?AS?1163?requires?deformation?to?75%?of?initial?tube?depth.
Impact?Properties:?Satisfies?Clauses?15.2?and?16.2?of?AS?1163?for?Charpy?V-Notch?impact?tests?at?the?test?temperature?of?0oC?(i.e.?L0).
请问AS 3678-250、350和AS1163-C350L0 RHS对应的中国钢号是什么？
AS 3678是钢板的标准
AS 3678-250相当于Q235
AS 3678-350相当于Q345
AS1163为钢管的标准
C350L0相当于Q345C
C350是什么材质
马氏体时效钢是以无碳或超低碳Fe-Ni马氏体为基体，经过时效处理使金属间化合物沉淀硬化的一种超高强度钢。这类钢的强度并不来自于碳，而来自于金属间化合物的沉淀。
钢种来源
美国18Ni钢是马氏体时效钢的代表钢种，按抗拉强度的数值(单位KSI，1KSI=6.89476MPa)分为四个等级：
其中，00Ni18Co8Mo5TiAl，即18Ni(250)，已经纳入我国国标GB/T 1299-2014《工模具钢》中。
性能特点
上海秉争实业有限公司18Ni钢固溶以后形成超低碳马氏体，硬度为28~30HRC，时效处理以后，由于各种类型的金属间化合物的脱溶析出得到时效硬化，硬度可以上升到50HRC。18Ni钢突出的特点是，在超高强度、高硬度的条件下，仍具有良好的韧性和高的断裂韧度。同时，这类钢无冷作硬化，时效热处理变形�。附有阅芰己茫砻婊箍梢陨淼�。
上海秉争实业有限公司18Ni马氏体时效钢具有较高的强度和硬度（超高抗拉强度，表面硬度50~54HRC），兼具良好的韧性和塑性，是制造航空航天和国防工业装备的一种关键材料，在航空、航天、精密模具等工业领域获得广泛应用，目前在国内外广泛用作制造火箭发动机壳体、导弹壳体、铀同位素离心分离机高速转筒等高精密承重零件的材料。
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