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西安铁素体不锈钢的五大分类

日期:2022-01-26 00:48
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摘要:<p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">西安</span></span><span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">铁素体不锈钢的五大</span></span><span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">分</span></span><span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">类</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">西安</span></span><span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">铁素体不锈钢分为五大类,其中三类未标准牌号,两类为特殊牌号。迄今为止,用量*大和应用范围*广的主要集中于标准牌号。</span> &nbsp;&nbsp;</span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">第</span> 1 <span style="font-family:宋体;">类 </span><span style="font-family:Calibri;">-- Cr </span><span style="font-family:宋体;">含量:</span><span style="font-family:Calibri;">10%-14%</span><span style="font-family:宋体;">;典型牌号</span><span style="font-family:Calibri;">409</span><span style="font-family:宋体;">,</span><span style="font-family:Calibri;"><a href="" target="_blank">410L</a></span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">这类钢在所有不锈钢中铬含量*低,因而*便宜,*适合在没有腐蚀或轻微腐蚀及允许有局部轻微生锈的环境下使用。</span>409 <span style="font-family:宋体;">型不锈钢起初专门为汽车排气系统消音器(腐蚀不严重的外部)所设计。</span><span style="font-family:Calibri;">410L </span><span style="font-family:宋体;">型不锈钢常用于容器、公共汽车和长途大轿车,*近用作液晶显示器的外框。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">第</span> 2 <span style="font-family:宋体;">类 </span><span style="font-family:Calibri;">-- &nbsp;Cr </span><span style="font-family:宋体;">含量:</span><span style="font-family:Calibri;">14%-18%</span><span style="font-family:宋体;">;典型牌号<a href="" target="_blank"> </a></span><span style="font-family:Calibri;"><a href="" target="_blank">430</a></span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">它是一类使用*广的铁素体不锈钢,含有较高的铬,具有较好的耐蚀性,其多数性能与</span> 304 <span style="font-family:宋体;">类似。在某些应用领域,可替代 </span><span style="font-family:Calibri;">304 </span><span style="font-family:宋体;">型不锈钢,一般在室内使用具有足够的耐蚀性。典型的用途包括洗衣机滚筒、室内面板等。典型的 </span><span style="font-family:Calibri;">430 </span><span style="font-family:宋体;">经常作为 </span><span style="font-family:Calibri;">304 </span><span style="font-family:宋体;">替代材料,用于厨房设施、洗碗机、壶和锅等。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">第</span> 3 <span style="font-family:宋体;">类 </span><span style="font-family:Calibri;">-- &nbsp;Cr </span><span style="font-family:宋体;">含量:</span><span style="font-family:Calibri;">14%-18%</span><span style="font-family:宋体;">,包含稳定化元素 </span><span style="font-family:Calibri;">Ti</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">Nb </span><span style="font-family:宋体;">等;典型牌号 </span><span style="font-family:Calibri;">430Ti</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">439</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">441 </span><span style="font-family:宋体;">等</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">与第</span> 2<span style="font-family:宋体;">类相比,这类型牌号具有良好的焊接性和成形性。在多数情况下,其性能甚至优于 </span><span style="font-family:Calibri;">304</span><span style="font-family:宋体;">。典型用途包括水槽、热交换管(制糖业、能源等)、汽车排气系统(比 </span><span style="font-family:Calibri;">409</span><span style="font-family:宋体;">寿命长)和洗衣机的焊接部位。第 </span><span style="font-family:Calibri;">3</span><span style="font-family:宋体;">类牌号甚至可替代 </span><span style="font-family:Calibri;">304</span><span style="font-family:宋体;">用于性能要求更高的场合。</span><span style="font-family:Calibri;">&nbsp;</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">第</span> 4 <span style="font-family:宋体;">类 –</span><span style="font-family:Calibri;">- &nbsp;Mo </span><span style="font-family:宋体;">含量在 </span><span style="font-family:Calibri;">0.5% </span><span style="font-family:宋体;">以上</span><span style="font-family:Calibri;">; </span><span style="font-family:宋体;">典型牌号包括 </span><span style="font-family:Calibri;">434</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">436</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">444 </span><span style="font-family:宋体;">等</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">这类牌号通过添加钼增加耐蚀性,其典型的应用领域是热水箱、太阳能热水器、汽车排气系统、电加热壶和微波炉部件、汽车装饰条和户外面板等。</span><a href="" target="_blank">444 </a><span style="font-family:宋体;">不锈钢的耐蚀性能与 </span><span style="font-family:Calibri;">316</span><span style="font-family:宋体;">不锈钢相当。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">第</span> 5 <span style="font-family:宋体;">类 </span><span style="font-family:Calibri;">-- Cr </span><span style="font-family:宋体;">含量:</span><span style="font-family:Calibri;">18%-30%</span><span style="font-family:宋体;">;典型牌号包括 </span><span style="font-family:Calibri;">446</span><span style="font-family:宋体;">、</span><span style="font-family:Calibri;">445/447 </span><span style="font-family:宋体;">等</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋体;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋体;">这类牌号通过添加更多的铬和含有钼来提高耐蚀性和抗氧化性。这类牌号的耐蚀性和抗氧化性优于</span>316<span style="font-family:宋体;">。典型用途沿海和其它高耐蚀环境。</span><span style="font-family:Calibri;">JIS 447 </span><span style="font-family:宋体;">的耐蚀性与金属钛相当。</span></span> </p>

西安铁素体不锈钢的五大

西安铁素体不锈钢分为五大类,其中三类未标准牌号,两类为特殊牌号。迄今为止,用量*大和应用范围*广的主要集中于标准牌号。   

1 -- Cr 含量:10%-14%;典型牌号409410L

这类钢在所有不锈钢中铬含量*低,因而*便宜,*适合在没有腐蚀或轻微腐蚀及允许有局部轻微生锈的环境下使用。409 型不锈钢起初专门为汽车排气系统消音器(腐蚀不严重的外部)所设计。410L 型不锈钢常用于容器、公共汽车和长途大轿车,*近用作液晶显示器的外框。

2 --  Cr 含量:14%-18%;典型牌号 430

它是一类使用*广的铁素体不锈钢,含有较高的铬,具有较好的耐蚀性,其多数性能与 304 类似。在某些应用领域,可替代 304 型不锈钢,一般在室内使用具有足够的耐蚀性。典型的用途包括洗衣机滚筒、室内面板等。典型的 430 经常作为 304 替代材料,用于厨房设施、洗碗机、壶和锅等。

3 --  Cr 含量:14%-18%,包含稳定化元素 TiNb 等;典型牌号 430Ti439441

与第 2类相比,这类型牌号具有良好的焊接性和成形性。在多数情况下,其性能甚至优于 304。典型用途包括水槽、热交换管(制糖业、能源等)、汽车排气系统(比 409寿命长)和洗衣机的焊接部位。第 3类牌号甚至可替代 304用于性能要求更高的场合。 

4 类 –-  Mo 含量在 0.5% 以上; 典型牌号包括 434436444

这类牌号通过添加钼增加耐蚀性,其典型的应用领域是热水箱、太阳能热水器、汽车排气系统、电加热壶和微波炉部件、汽车装饰条和户外面板等。444 不锈钢的耐蚀性能与 316不锈钢相当。

5 -- Cr 含量:18%-30%;典型牌号包括 446445/447

这类牌号通过添加更多的铬和含有钼来提高耐蚀性和抗氧化性。这类牌号的耐蚀性和抗氧化性优于316。典型用途沿海和其它高耐蚀环境。JIS 447 的耐蚀性与金属钛相当。

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