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電(dian)(dian)梯(ti)(ti)作為辦公、生活中(zhong)常用到的(de)垂直(zhi)方(fang)向的(de)運輸(shu)工具，在(zai)高(gao)層樓房和公共場所已經(jing)成為不可或(huo)缺的(de)建(jian)筑(zhu)配備。技術的(de)發展(zhan)及(ji)人民(min)的(de)生活消費水平的(de)提升，也帶動(dong)了電(dian)(dian)梯(ti)(ti)產業的(de)迅速發展(zhan)。2020年中(zhong)國(guo)電(dian)(dian)梯(ti)(ti)保(bao)有(you)量(liang)(liang)(liang)800萬臺，占(zhan)全(quan)球(qiu)電(dian)(dian)梯(ti)(ti)保(bao)有(you)量(liang)(liang)(liang)的(de)40％以上，2020年中(zhong)國(guo)電(dian)(dian)梯(ti)(ti)產量(liang)(liang)(liang)105萬噸(dun)，占(zhan)全(quan)球(qiu)電(dian)(dian)梯(ti)(ti)總產量(liang)(liang)(liang)的(de)70％以上。受全(quan)球(qiu)疫情(qing)的(de)影(ying)響(xiang)，2020年中(zhong)國(guo)電(dian)(dian)梯(ti)(ti)出口(kou)量(liang)(liang)(liang)大(da)幅下降為7.5萬臺。

基于電梯行業需求，寶鋼自2007年開始，分別與國內知名電梯品牌廣州日立電梯、上海三菱電梯一道，聯合開發了電梯轎廂用超純鐵素體不銹鋼BX439和B443NT產品。前期三菱電梯對B443NT研磨拉絲面板開展了中性鹽霧、加速腐蝕試驗等耐蝕性評價及螺柱焊接、落料、沖孔、折邊等加工評價。評價結果表明，B443NT耐蝕性能與304相當，加工性能完全符合鈑金件流水線加工設備要求。

針對(dui)含(han)鈦(tai)(tai)超純鐵(tie)素體不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)BX439、B443NT不(bu)(bu)能(neng)用(yong)(yong)于磨(mo)拋(pao)鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)電(dian)(dian)梯板(ban)(ban)的(de)(de)問題，2014年寶(bao)(bao)鋼(gang)(gang)與中(zhong)科院沈陽金屬所、三(san)菱電(dian)(dian)梯一道，開(kai)展了(le)(le)(le)中(zhong)信-CBMM-寶(bao)(bao)鋼(gang)(gang)技(ji)術(shu)(shu)合(he)(he)作項(xiang)目“電(dian)(dian)梯用(yong)(yong)高等級表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)含(han)鈮鐵(tie)素體不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)開(kai)發及關鍵(jian)技(ji)術(shu)(shu)研(yan)究”，聯合(he)(he)開(kai)發了(le)(le)(le)可用(yong)(yong)于研(yan)磨(mo)8K的(de)(de)超純鐵(tie)素體不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)B443Nb。上(shang)(shang)海三(san)菱電(dian)(dian)梯于2016年開(kai)始(shi)對(dui)寶(bao)(bao)鋼(gang)(gang)試(shi)制(zhi)B443Nb樣板(ban)(ban)（BA大板(ban)(ban)）開(kai)展了(le)(le)(le)鋼(gang)(gang)板(ban)(ban)研(yan)磨(mo)、耐(nai)蝕性(xing)(xing)能(neng)和加(jia)工(gong)(gong)性(xing)(xing)能(neng)測(ce)(ce)試(shi)。鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)研(yan)磨(mo)加(jia)工(gong)(gong)結(jie)(jie)果(guo)顯示，B443Nb與304的(de)(de)鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)板(ban)(ban)外觀效(xiao)果(guo)基(ji)本一致(zhi)，表(biao)(biao)(biao)明(ming)B443Nb對(dui)高質(zhi)(zhi)量表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)加(jia)工(gong)(gong)的(de)(de)適應(ying)性(xing)(xing)達到了(le)(le)(le)預期的(de)(de)效(xiao)果(guo)；循環鹽霧測(ce)(ce)試(shi)表(biao)(biao)(biao)明(ming)，B443Nb 8K樣品(pin)耐(nai)蝕性(xing)(xing)好于SUS304 發紋(wen)，與SUS3048K鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)接近；加(jia)工(gong)(gong)性(xing)(xing)能(neng)方面(mian)(mian)(mian)(mian)(mian)(mian)(mian)，在鈑金件流(liu)水線上(shang)(shang)進行了(le)(le)(le)制(zhi)作電(dian)(dian)梯轎廂(xiang)(xiang)(xiang)壁的(de)(de)落(luo)料、沖孔、折邊等常(chang)規(gui)加(jia)工(gong)(gong)，并對(dui)小樣進行了(le)(le)(le)激光切割，結(jie)(jie)果(guo)表(biao)(biao)(biao)明(ming)加(jia)工(gong)(gong)性(xing)(xing)能(neng)完(wan)全符合(he)(he)鈑金件流(liu)水線加(jia)工(gong)(gong)設備要求(qiu)。在鋼(gang)(gang)板(ban)(ban)測(ce)(ce)試(shi)結(jie)(jie)果(guo)全面(mian)(mian)(mian)(mian)(mian)(mian)(mian)滿足(zu)性(xing)(xing)能(neng)要求(qiu)的(de)(de)基(ji)礎上(shang)(shang)，試(shi)制(zhi)了(le)(le)(le)兩(liang)個電(dian)(dian)梯轎廂(xiang)(xiang)(xiang)，分(fen)別考察了(le)(le)(le)鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)、鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)鍍(du)鈦(tai)(tai)、鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)蝕刻(ke)鍍(du)鈦(tai)(tai)、和紋(wen)鍍(du)鈦(tai)(tai)4種表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)處(chu)理(li)，以及鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)、和紋(wen)鍍(du)鈦(tai)(tai)、和紋(wen)蝕刻(ke)鍍(du)鈦(tai)(tai)、砂紋(wen)鍍(du)鈦(tai)(tai)4種表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)處(chu)理(li)。從(cong)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)質(zhi)(zhi)量上(shang)(shang)看，試(shi)制(zhi)的(de)(de)轎廂(xiang)(xiang)(xiang)已基(ji)本覆蓋了(le)(le)(le)上(shang)(shang)海三(san)菱電(dian)(dian)梯常(chang)用(yong)(yong)的(de)(de)不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)處(chu)理(li)種類，且壁板(ban)(ban)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)質(zhi)(zhi)量令人滿意。該(gai)產(chan)品(pin)的(de)(de)成功(gong)開(kai)發，填(tian)補了(le)(le)(le)電(dian)(dian)梯鏡(jing)(jing)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)板(ban)(ban)用(yong)(yong)超純鐵(tie)素體不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)產(chan)品(pin)的(de)(de)空白，促進了(le)(le)(le)寶(bao)(bao)鋼(gang)(gang)超純鐵(tie)素體不(bu)(bu)銹(xiu)(xiu)鋼(gang)(gang)在超低碳(tan)氮冶煉(lian)、純凈化(hua)冶煉(lian)、熱軋輥(gun)跡表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)(mian)(mian)(mian)缺(que)陷控制(zhi)等關鍵(jian)技(ji)術(shu)(shu)的(de)(de)提升。

寶鋼生產的電梯面板用超純鐵素體不銹鋼產品耐蝕性與奧氏體不銹鋼304相當，價格比304不(bu)銹鋼更低，且價格穩定，深受電梯行業歡迎。三菱電梯對B443NT及B443Nb 鐵素體不銹鋼需求量占其不銹鋼用量的70％～75％，2014～2018年累計采購5.7萬多噸，比奧氏體不銹鋼304節省成本10619萬元。同時，節約貴重鎳金屬資源4500余噸。

酒鋼(gang)建筑(zhu)裝飾用超(chao)純(chun)鐵素體材料在西奧、迅達、三菱、日立(li)電梯得到應用。