摘要：<p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管的比重及應用領域</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管的比重是</span><span style="font-family:'Times New Roman';">8.03g/cm3</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼是高合金超級雙相鋼，耐腐蝕性能到底怎么樣呢？讓我們一起來看一看</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">1</span><span style="font-family:宋體;">、一般腐蝕和</span><span style="font-family:'Times New Roman';">904L</span><span style="font-family:宋體;">不銹鋼無縫管</span><span style="font-family:宋體;">相比，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼對稀釋的混有氯根離子的硫酸具有更強的抗腐蝕能力。</span><span style="font-family:'Times New Roman';">904L</span><span style="font-family:宋體;">是奧氏體狀態的合金，專用于抗純硫酸腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的較高的鉻及鉬含量使其對有機酸如甲酸、乙酸等具有較強的抗整體腐蝕的能力。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼</span><span style="font-family:宋體;">對無機酸，尤其是那些包含氯化物的無機酸也具有較強的抗腐蝕能力。</span><span style="font-family:'Times New Roman';">316L</span><span style="font-family:宋體;">等級不能用于鹽酸環境中，它可能會遭到局部腐蝕或整體腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼可以用于稀釋的鹽酸環境里，具有較強的抗斑損及抗裂隙腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2</span><span style="font-family:宋體;">、晶間腐蝕：</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼較低的碳含量大大地降低了在熱處理時晶間中的碳化物沉淀的風險，因此，這個合金具有很強的抵抗與碳化物相關的晶間腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">3</span><span style="font-family:宋體;">、應力腐蝕開裂：由于其較高的合金含量，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的抗腐蝕能力及強度均優于</span><span style="font-family:'Times New Roman';">2205</span><span style="font-family:宋體;">。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的復式結構使其具有較強的抗應力腐蝕開裂的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">4</span><span style="font-family:宋體;">、蝕損腐蝕：測驗鋼鐵產品在含有氯化物的溶液中的抗蝕損腐蝕能力的方法有很多種，高性能的不銹鋼在</span><span style="font-family:'Times New Roman';">1M</span><span style="font-family:宋體;">氯化鈉溶液中的蝕損的臨界溫度是有規定的。各種實驗結果證明了</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼有**的抗蝕損腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">5</span><span style="font-family:宋體;">、裂縫腐蝕： 裂縫在建筑等方面幾乎是不可避免的，這使得不銹鋼在氯化物的環境里更易受到腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼具有很強的抗裂縫腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">（</span><span style="font-family:'Times New Roman';">UNS S32750</span><span style="font-family:宋體;">）雙相不銹鋼的強度及抗腐蝕能力較強，主要用于化學加工、石油化工和海底設備。它具有較強的抗氯化物腐蝕能力，較高的導熱性和較低的熱膨脹系數。較高的鉻、鉬及氮含量氏它具有很高的抗斑蝕、裂隙腐蝕及一般腐蝕的能力。它的沖擊強度也很高，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">合金不適宜用在高于</span><span style="font-family:'Times New Roman';">570</span><span style="font-family:宋體;">℃的溫度環境下</span><span style="font-family:'Times New Roman';">,</span><span style="font-family:宋體;">長期處在這樣的環境下</span><span style="font-family:'Times New Roman';">,</span><span style="font-family:宋體;">它的韌性會降低。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:宋體;">超級雙相不銹鋼</span><span style="font-family:'Times New Roman';">2507(S32750)</span><span style="font-family:宋體;">是比雙相不銹鋼</span><span style="font-family:'Times New Roman';">2205(S31803)</span><span style="font-family:宋體;">具有更高的耐腐蝕性及更優的機械性能。常應用于海上石油平臺（熱交換器管，水處理和供水系統，消防系統，噴水系統，穩水系統），脫鹽（淡化）設備（</span><span style="font-family:'Times New Roman';">Ro</span><span style="font-family:宋體;">設備中的高壓管，海水管）等特殊化工環境設備中。名稱</span><span style="font-family:'Times New Roman';">S32750</span><span style="font-family:宋體;">，</span><span style="font-family:'Times New Roman';">SAF2507 </span><span style="font-family:宋體;">，</span><span style="font-family:'Times New Roman';">F53 </span><span style="font-family:宋體;">，國標</span><span style="font-family:'Times New Roman';">00Cr25Ni7Mo4N</span><span style="font-family:宋體;">。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管</span><span style="font-family:宋體;">應用領域有：石油天然氣工業設備；離岸平臺、熱交換器、水下設備、消防設備；</span> 化學加工工業、器皿與管道業； 脫鹽植物、海底管道； 機械部件<span style="font-family:'Times New Roman';">(</span><span style="font-family:宋體;">高強度、抗腐蝕部件</span><span style="font-family:'Times New Roman';">)</span><span style="font-family:宋體;">、 能源工業</span><span style="font-family:'Times New Roman';">FGD</span><span style="font-family:宋體;">系統、工業洗刷系統、吸收塔等。</span><o:p></o:p> </p>