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S32760特殊不銹鋼-雙相不銹鋼卷板
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[1]。該鋼材PREn值超過(guò)40，具備抗氯化物腐蝕、應(yīng)力腐蝕開(kāi)裂等特性，在強(qiáng)酸環(huán)境和海水介質(zhì)中表現(xiàn)突出，機(jī)械強(qiáng)度達(dá)到抗拉強(qiáng)度750~895MPa，延伸率≥25% [3]。材料應(yīng)用領(lǐng)域覆蓋石油天然氣海底管道、化工反應(yīng)器、海水淡化設(shè)備等嚴(yán)苛工業(yè)場(chǎng)景，產(chǎn)品形態(tài)包含無(wú)縫管、板材、法蘭等工業(yè)部件，工作溫度需控制在300℃以下以確保性能穩(wěn)定 [2]。全球主要執(zhí)行標(biāo)準(zhǔn)包括ASTM A240、EN 10088-2等國(guó)際規(guī)范 [3]。外文名別 名F55/X2CrNiMoCuWN 25.7.4/1.4501材料類型超級(jí)雙相鋼密 度8.0g/cm3 [2]熔 點(diǎn)1400-1450℃ [2]執(zhí)行標(biāo)準(zhǔn)ASTM A240/EN 10088-2 [3]PREn值≥40 [3]抗拉強(qiáng)度750~895MPa屈服強(qiáng)度＞550MPa延伸率≥25%收縮率＞45長(zhǎng)期使用溫度≤300℃ [3]目錄1化學(xué)成分特性2物理與力學(xué)性能3典型應(yīng)用領(lǐng)域?能源工業(yè)?化工裝備?海洋工程4加工制造工藝5產(chǎn)品規(guī)格與標(biāo)準(zhǔn)化學(xué)成分特性播報(bào)編輯主要合金成分包含鉻24-26%、鎳6-8%、鉬3-4%，并添加0.5-1%銅、0.2-0.3%氮及適量鎢元素。碳含量嚴(yán)格控制在0.03%以下，硫磷雜質(zhì)限制在0.03%以內(nèi)，這種配比有效提升材料耐腐蝕性同時(shí)保持雙相結(jié)構(gòu)穩(wěn)定性 [2]。銅元素添加顯著提升抗硫酸腐蝕能力，鎢元素增強(qiáng)抗點(diǎn)蝕性能，氮元素不僅提高強(qiáng)度還能促進(jìn)奧氏體相形成。元素協(xié)同作用使材料在氯化物環(huán)境中的臨界點(diǎn)蝕溫度達(dá)到90℃以上，優(yōu)于普通雙相鋼 [3]。物理與力學(xué)性能播報(bào)編輯20℃時(shí)材料密度為8.0g/cm3，導(dǎo)熱系數(shù)較奧氏體鋼提高30%，線膨脹系數(shù)降低15-20%，適用于熱交換器等高載荷場(chǎng)景 [2]。抗拉強(qiáng)度750~895MPa，屈服強(qiáng)度＞550MPa，延伸率≥25%，沖擊功在-40℃仍保持100J以上。雙相結(jié)構(gòu)使材料同時(shí)具備鐵素體的高強(qiáng)度與奧氏體的韌性，在酸性介質(zhì)中腐蝕速率低于0.1mm/年 [3]?？箲?yīng)力腐蝕開(kāi)裂性能達(dá)到普通316L不銹鋼的5倍以上，特別是在含硫化氫的油氣環(huán)境中表現(xiàn)優(yōu)異。典型應(yīng)用領(lǐng)域播報(bào)編輯能源工業(yè)用于海底油氣管道系統(tǒng)、水下采油樹(shù)閥體及離岸平臺(tái)關(guān)鍵結(jié)構(gòu)件，可承受60MPa高壓及海水長(zhǎng)期沖刷腐蝕 [1]。在油氣分離設(shè)備中替代鎳基合金，降低25%材料成本同時(shí)延長(zhǎng)部件使用壽命 [3]。化工裝備應(yīng)用于濃硫酸儲(chǔ)罐、鹽酸反應(yīng)器等強(qiáng)腐蝕設(shè)備，工作介質(zhì)pH值適用范圍1-12。制藥行業(yè)用于高純度介質(zhì)輸送管道，滿足衛(wèi)生標(biāo)準(zhǔn)要求。海洋工程作為海水淡化裝置高壓反滲透膜殼材料，可承受高壓操作壓力，使用壽命達(dá)25年以上 [1-2]。海洋平臺(tái)系泊鏈部件采用該材料后，抗疲勞性能顯著提升 [3]。加工制造工藝播報(bào)編輯熱加工溫度范圍控制在1150-900℃，需避免在650-950℃敏化區(qū)間停留，防止σ相析出導(dǎo)致韌性下降。焊接推薦使用ER2594焊絲，層間溫度嚴(yán)格控制在150℃以下，焊后無(wú)需熱處理即可恢復(fù)耐蝕性。冷成型加工需控制變形量在15%以內(nèi)，復(fù)雜部件建議采用1050℃固溶處理消除殘余應(yīng)力 [2-3]。機(jī)加工刀具應(yīng)選用硬質(zhì)合金材質(zhì)，切削速度較316L降低20-30%以保證加工精度。產(chǎn)品規(guī)格與標(biāo)準(zhǔn)播報(bào)編輯板材厚度范圍3-100mm，管材外徑覆蓋10-2000mm，法蘭最大規(guī)格可達(dá)DN700 Class150 [2]。工業(yè)產(chǎn)品執(zhí)行ASTM A240（板材）、ASTM A790（焊管）、ASTM A182（鍛件）等標(biāo)準(zhǔn)體系。檢測(cè)標(biāo)準(zhǔn)包括ASTM G48法測(cè)定點(diǎn)蝕電位，ASTM A923評(píng)估有害相含量 [3]。新手上路成長(zhǎng)任務(wù)編輯入門(mén)編輯規(guī)則本人編輯我有疑問(wèn)內(nèi)容質(zhì)疑在線客服官方貼吧意見(jiàn)反饋投訴建議舉報(bào)不良信息未通過(guò)詞條申訴投訴侵權(quán)信息封禁查詢與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺(tái)?|?京ICP證030173號(hào)?京公網(wǎng)安備11000002000001號(hào)window.PAGE_DATA= 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S32760不銹鋼S32760是一種高合金的超級(jí)雙相不銹鋼，主要應(yīng)用于各種強(qiáng)腐蝕環(huán)境下。S32760雙相鋼強(qiáng)度及抗腐蝕能力較強(qiáng)，主要用于化學(xué)加工、石油化工和海底設(shè)備。它具有較強(qiáng)的抗氯化物腐蝕能力，較高的導(dǎo)熱性和較低的熱膨脹系數(shù)。較高的鉻、鉬及氮含量讓它具有很高的抗斑蝕、裂隙腐蝕及其他腐蝕能力。S32760雙相鋼優(yōu)異的綜合性能優(yōu)于一般的雙相鋼，例如2205、S31803等。S32760雙相鋼能耐各種無(wú)機(jī)酸以及有機(jī)酸，同時(shí)其添加的銅元素使它具有卓越的耐非氧化性酸腐蝕能力，F(xiàn)55還耐強(qiáng)堿腐蝕，但是F55雙相鋼不適合在長(zhǎng)期工作溫度300℃以上的情況下使用，因?yàn)樵诖藴囟纫陨?，材料的韌性會(huì)明顯的下降。S32760超級(jí)雙相不銹鋼主要應(yīng)用： 中性氯化物環(huán)境，煉油工業(yè)，石油化學(xué)和化學(xué)工業(yè)，化學(xué)工業(yè)用輸送管道，石油和天然氣工業(yè)，紙漿和造紙工業(yè)，化肥工業(yè)，尿素工業(yè)，磷肥工業(yè)，海水環(huán)境，能源與環(huán)保工業(yè)，輕工和食品工業(yè)，食品和制藥工業(yè)的設(shè)備，高強(qiáng)度結(jié)構(gòu)件，海底管線，煙機(jī)脫硫，滲透脫鹽淡化設(shè)備，硫酸廠，海洋工程緊固件等。 PRODUCT PARAMETERS 產(chǎn)品參數(shù) S32760化學(xué)成分合金%鎳鉻鉬氮碳錳硅硫磷銅鎢S32760***小6.0243.00.2—————0.50.58.0264.00.30.031.01.00.010.031.01.0S32760超級(jí)雙相不銹鋼物理性能： 1、密度：8.0g/cm3， 2、熔點(diǎn)：1400-1450℃， 3、比熱(J/kg??K)：460， 4、電阻率(μΩ??cm)：90.0， 5、熱傳導(dǎo)率(W/m??K)：12.8，S32760超級(jí)雙相不銹鋼機(jī)械性能： 1、抗拉強(qiáng)度：σb≥750Mpa， 2、屈服強(qiáng)度σb≥550Mpa： 3、延伸率：δ≥45%， 4、硬度：270（HB）S32760超級(jí)雙相不銹鋼材料特性： 1、可靠的耐腐蝕性能(耐點(diǎn)蝕系數(shù)(PREN≥40)*， 2、極好的耐氯離子點(diǎn)蝕及縫隙腐蝕能力， 3、極好的耐硫酸性， 4、優(yōu)異的含氯離子及酸性(如硫化氫)介質(zhì)環(huán)境下的耐應(yīng)力腐蝕開(kāi)裂能力， 5、耐沖刷腐蝕及腐蝕疲勞， 6、優(yōu)良的機(jī)械性能和良好的可焊性。 上一頁(yè)：X2CrNiMoCuWN 25.7.4
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