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304不銹鋼特殊不銹鋼-奧氏體不銹鋼300系列
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.index-module_wrapperBg__OKK1h{background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_bg_new.png);background-position:top;background-repeat:no-repeat;background-size:cover;height:871px;left:0;position:absolute;top:0;width:100%}.index-module_drawerHand__aRhcO{align-items:center;background-image:url(https://baikebcs.bdimg.com/baike-common/sdks/drawer_hand_bg.png);background-position:50%;background-repeat:no-repeat;background-size:contain;cursor:pointer;display:flex;height:72px;justify-content:center;position:fixed;right:0;top:50%;transform:translateY(-36px);transition:all .2s ease-in;width:20px}.index-module_drawerHand__aRhcO .index-module_taskLogo__71Tj5{height:66px;position:absolute;right:30px;top:0;width:66px}.index-module_drawerHand__aRhcO.index-module_open__qMl5O{right:480px}.index-module_reverse__OKr6k{transform:rotate(180deg)}網(wǎng)頁新聞貼吧知道網(wǎng)盤圖片視頻地圖文庫資訊采購百科百度首頁登錄注冊(cè)進(jìn)入詞條全站搜索幫助首頁秒懂百科特色百科知識(shí)專題加入百科百科團(tuán)隊(duì)權(quán)威合作個(gè)人中心304不銹鋼播報(bào)討論上傳視頻不銹鋼中常見的一種材質(zhì)收藏查看我的收藏0有用+10304不銹鋼是不銹鋼中常見的一種材質(zhì)，密度為7.93 g/cm3；業(yè)內(nèi)也叫作18/8不銹鋼，意思為含有18％以上的鉻和8％以上的鎳；耐高溫800℃，具有加工性能好，韌性高的特點(diǎn)，廣泛應(yīng)用于工業(yè)和家具裝飾行業(yè)和食品醫(yī)療行業(yè)。但是需要注意的是，食品級(jí)304不銹鋼跟普通的304不銹鋼相比，它的含量指標(biāo)更加嚴(yán)格。例如：國際上基本上對(duì)304不銹鋼的定義是主要含鉻18％-20％鎳8％-10％，但食品級(jí)304不銹鋼則是含鉻18％和鎳8％，允許一定范圍內(nèi)波動(dòng)，并且限制各種重金屬的含量。換句話來說，就是304不銹鋼不一定就是食品級(jí)304不銹鋼市場(chǎng)上常見的標(biāo)示方法中有06Cr19Ni10，SUS304，其中06Cr19Ni10一般表示國標(biāo)標(biāo)準(zhǔn)生產(chǎn)，304一般表示ASTM標(biāo)準(zhǔn)生產(chǎn)，SUS304表示日標(biāo)標(biāo)準(zhǔn)生產(chǎn)。304是一種通用性的不銹鋼，它廣泛地用于制作要求良好綜合性能（耐腐蝕和成型性）的設(shè)備和機(jī)件。為了保持不銹鋼所固有的耐腐蝕性，鋼必須含有18%以上的鉻,8%以上的鎳含量。304不銹鋼是按照美國ASTM標(biāo)準(zhǔn)生產(chǎn)出來的不銹鋼的一個(gè)牌號(hào)。中文名304不銹鋼/06Cr19Ni10外文名304 stainless steel/SUS304別 名SUS304或者18-8不銹鋼特 點(diǎn)耐腐蝕（并非完全不會(huì)被腐蝕），韌性好 [1]半成品狀態(tài)熱軋板，冷拔管磁 性弱磁性，經(jīng)過拉伸/沖壓等冷加工后磁性會(huì)變強(qiáng)（可被磁鐵吸?。?[1]國 標(biāo)GB/T 3280-2015目錄1物理性能2產(chǎn)品成分3應(yīng)用范圍4產(chǎn)品標(biāo)準(zhǔn)?1.標(biāo)示方法?2.分類和分級(jí)5加工方法?蝕刻法?噴彩法?工藝過程?沖壓加工6生銹原因?氯離子?固溶處理?晶間腐蝕?表面痕物理性能播報(bào)編輯304不銹鋼圖冊(cè)(19張)抗拉強(qiáng)度 σb (MPa)≥515-1035條件屈服強(qiáng)度 σ0.2 (MPa)≥205伸長率 δ5 (%)≥40斷面收縮率 ψ (%)≥?硬度：≤201HBW;≤92HRB;≤210HV密度（20℃，g/cm3）：7.93熔點(diǎn)（℃）：1398~1454比熱容（0~100℃，KJ·kg-1K-1）：0.50熱導(dǎo)率（W·m-1·K-1）：（100℃）16.3，（500℃）21.5線脹系數(shù)（10-6·K-1）：（0~100℃）17.2，（0~500℃）18.4電阻率（20℃，10-6Ω·m2/m）：0.73縱向彈性模量（20℃，KN/mm2）：193產(chǎn)品成分播報(bào)編輯對(duì)于304不銹鋼來說，其成份中的Ni元素非常重要，直接決定著304不銹鋼的抗腐蝕能力及其的價(jià)值。304中最為重要的元素是Ni、Cr，但是又不僅限于這兩個(gè)元素。具體的要求由產(chǎn)品標(biāo)準(zhǔn)規(guī)定。行業(yè)常見判定情況認(rèn)為只要Ni含量大于8%，Cr含量大于18%，就可以認(rèn)為是304不銹鋼。這也是為什么業(yè)內(nèi)會(huì)把這類不銹鋼叫做18/8不銹鋼的原因。其實(shí)，相關(guān)的產(chǎn)品標(biāo)準(zhǔn)對(duì)304有著非常清楚的規(guī)定，而這些產(chǎn)品標(biāo)準(zhǔn)針對(duì)不同形狀的不銹鋼又有一些差異。下面是一些常見的產(chǎn)品標(biāo)準(zhǔn)與測(cè)試。要想確定一個(gè)材料是不是304不銹鋼，必須滿足產(chǎn)品標(biāo)準(zhǔn)中每一個(gè)元素的要求，只要有一個(gè)不符合，就不能叫做304不銹鋼。1、ASTM A276（Standard Specification for Stainless Steel Bars棒材 and Shapes型材）304CMnPSSiCrNi要求，%≤0.08≤2.00≤0.045≤0.030≤1.0018.0–20.08.0-11.02、ASTM A240（Chromium and Chromium-Nickel Stainless Steel Plate板材,Sheet片材, and Strip帶材 for Pressure essels and for General Applications）304CMnPSSiCrNiN要求，%≤0.07≤2.00≤0.045≤0.030≤0.7517.5–19.58.0–10.5≤0.103、JIS G4305（cold-rolled 冷軋stainless steel plate板材, sheet片材 and strip帶材）SUS 304CMnPSSiCrNi要求，%≤0.08≤2.00≤0.045≤0.030≤1.0018.0–20.08.0-10.54、JIS G4303 （Stainless steel bars不銹鋼棒）SUS 304CMnPSSiCrNi要求，%≤0.08≤2.00≤0.045≤0.030≤1.0018.0–20.08.0-10.5以上四個(gè)標(biāo)準(zhǔn)只是常見的幾個(gè)標(biāo)準(zhǔn)，其實(shí)ASTM和JIS中有提到304的不止這幾個(gè)標(biāo)準(zhǔn)。每個(gè)標(biāo)準(zhǔn)其實(shí)對(duì)304的要求不盡相同，所以要想確定一個(gè)材料是不是304，準(zhǔn)確的表達(dá)方式應(yīng)該說是否符合某個(gè)產(chǎn)品標(biāo)準(zhǔn)中的304要求。材質(zhì)證明書一般要出具以下類型報(bào)告：詳細(xì)的標(biāo)準(zhǔn)規(guī)格對(duì)比:截止2015-12-08編號(hào)標(biāo)準(zhǔn)/S30400CMnPSSiCrNiNCu1ASTM A276/A276M-150.082.000.0450.0301.0018.0-20.08.0-11.0--2ASTM A959-110.072.000.0450.0301.0017.5-19.58.0-11.0--3ASTM A240/A240M-15a0.072.000.0450.0300.7517.5-19.58.0-10.5--4ASTM A182/A182M-150.082.000.0450.0301.0018.0-20.08.0-11.00.10-5ASTM A193/A193M-150.082.000.0450.0301.0018.0-20.08.0-11.0--6ASTM A269/A269M-150.082.000.0450.0301.0018.0-20.08.0-11.0--7ASTM A312/A312M-15a0.082.000.0450.0301.0018.0-20.08.0-11.0--8ASTM A320/A320M-15a0.082.000.0450.0301.0018.0-20.08.0-11.0--9ASTM A403/A403M-150.082.000.0450.0301.0018.0-20.08.0-11.0--10ASTM A493-09(2013)0.082.000.0450.0301.0018.0-20.08.0-10.50.101.0011ASTM A554-15a (MT-304)0.082.000.0450.0301.0018.0-20.08.0-11.0--12JIS G4303:20120.082.000.0450.0301.0018.0-20.08.0-10.5--13JIS G4304:20120.082.000.0450.0301.0018.0-20.08.0-10.5--14JIS G4305:20120.082.000.0450.0301.0018.0-20.08.0-10.5--15GB/T 20878-20070.082.000.0450.0301.0018.0-20.08.0-11.0--應(yīng)用范圍播報(bào)編輯系統(tǒng)描述：304不銹鋼是應(yīng)用最為廣泛的一種鉻-鎳不銹鋼，作為一種用途廣泛的鋼，它具有良好的耐蝕性、耐熱性，低溫強(qiáng)度和機(jī)械特性；沖壓、彎曲等熱加工性好，無熱處理硬化現(xiàn)象（使用溫度-196℃～800℃）。304不銹鋼在大氣中耐腐蝕， 但在工業(yè)性氣氛或重污染地區(qū)使用時(shí)，則需要及時(shí)清潔以避免腐蝕。它適合用于食品的加工、儲(chǔ)存和運(yùn)輸，具有良好的加工性能和可焊性。304不銹鋼也廣泛應(yīng)用于制造家庭用品（1、2類餐具、櫥柜、室內(nèi)管線、熱水器、鍋爐、浴缸），汽車配件（風(fēng)擋雨刷、消聲器、模制品），醫(yī)療器具，建筑材料，化學(xué)設(shè)備，農(nóng)業(yè)器械，船舶部件等。其中含量嚴(yán)格控制的304不銹鋼，也可以稱為食品級(jí)304不銹鋼大多數(shù)的使用要求是長期保持建筑物的原有外貌。在確定要選用的不銹鋼類型時(shí)，主要考慮的是所要求的審美標(biāo)準(zhǔn)、所在地大氣的腐蝕性以及要采用的清理制度。 然而，其它應(yīng)用越來越多的只是尋求結(jié)構(gòu)的完整性或不透水性。例如，工業(yè)建筑的屋頂和側(cè)墻。在這些應(yīng)用中，物主的建造成本可能比審美更為重要，表面不很干凈也可以。 在干燥的室內(nèi)環(huán)境中使用304不銹鋼效果相當(dāng)好。但是，在鄉(xiāng)村和城市要想在戶外保持其外觀，就需經(jīng)常進(jìn)行清洗。在污染嚴(yán)重的工業(yè)區(qū)和沿海地區(qū)，表面會(huì)非常臟，甚至產(chǎn)生銹蝕。但要獲得戶外環(huán)境中的審美效果，就需采用含鎳不銹鋼。所以，304不銹鋼廣泛用于幕墻、側(cè)墻、屋頂及其它建筑用途，但在侵蝕性嚴(yán)重的工業(yè)或海洋大氣中，最好采用316不銹鋼。 不銹鋼拉門，人們已充分認(rèn)識(shí)到了在結(jié)構(gòu)應(yīng)用中使用不銹鋼的優(yōu)越性。有幾種設(shè)計(jì)準(zhǔn)則中包括了304和316不銹鋼。因?yàn)?quot;雙相"不銹鋼2205已把良好的耐大氣腐蝕性能和高抗拉強(qiáng)度及彈限強(qiáng)度融為一體，所以，歐洲準(zhǔn)則中也包括了這種鋼。 產(chǎn)品形狀 實(shí)際上，不銹鋼是以全標(biāo)準(zhǔn)的金屬形狀和尺寸生產(chǎn)制造的，而且還有許多特殊形狀。最常用的產(chǎn)品是用薄板和帶鋼制成的，也用中厚板生產(chǎn)特殊產(chǎn)品，例如，生產(chǎn)熱軋結(jié)構(gòu)型鋼和擠壓結(jié)構(gòu)型鋼。而且還有圓型、橢圓型、方型、矩型和六角型焊管或無縫鋼管及其它形式的產(chǎn)品，包括型材、棒材、線材和鑄件。產(chǎn)品標(biāo)準(zhǔn)播報(bào)編輯1.標(biāo)示方法美國鋼鐵學(xué)會(huì)是用三位數(shù)字來標(biāo)示各種標(biāo)準(zhǔn)級(jí)的可鍛不銹鋼的。其中：①奧氏體型不銹鋼用200和300系列的數(shù)字標(biāo)示，例如，某些較普通的奧氏體不銹鋼是以201、 304、 316以及310為標(biāo)記，②鐵素體和馬氏體型不銹鋼用400系列的數(shù)字表示。③鐵素體不銹鋼是以430和446為標(biāo)記，馬氏體不銹鋼 是以410、420以及440C為標(biāo)記，④雙相（奧氏體－鐵素體），不銹鋼、沉淀硬化不銹鋼以及含鐵量低于50%的高合金通常是采用專利名 稱或 商標(biāo)命名。2.分類和分級(jí)1.分級(jí)分類：①國家標(biāo)準(zhǔn)GB ②行業(yè)標(biāo)準(zhǔn)YB ③地方標(biāo)準(zhǔn) ④企業(yè)標(biāo)準(zhǔn)Q/CB2.分類：①產(chǎn)品標(biāo)準(zhǔn) ②包裝標(biāo)準(zhǔn) ③方法標(biāo)準(zhǔn) ④基礎(chǔ)標(biāo)準(zhǔn)3.標(biāo)準(zhǔn)水平（分三級(jí)）：Y級(jí)：國際先進(jìn)水平 I級(jí)：國際一般水平 H級(jí)：國內(nèi)先進(jìn)水平4.國標(biāo)GB1220-2007不銹鋼棒材（I級(jí)） GB4241-84 不銹鋼焊接盤園（H級(jí)）GB4356-2002 不銹鋼焊接盤園（I級(jí)） GB1270-80 不銹鋼管材（I級(jí)）GB12771-2000 不銹鋼焊管（Y級(jí)） GB3280-2007 不銹鋼冷板（I級(jí)）GB4237-2007 不銹鋼熱板（I級(jí)） GB4239-91 不銹鋼冷帶（I級(jí)）加工方法播報(bào)編輯蝕刻法蝕刻加工法，是在不銹鋼表面采用絲網(wǎng)印刷耐酸保護(hù)膜，然后用氯化亞鐵液蝕刻，形成藝術(shù)圖案的。噴彩法噴彩法是在絲網(wǎng)印刷后噴射色料顆粒，構(gòu)成梨皮樣表面，形成藝術(shù)圖案的。工藝過程不銹鋼制品的噴色美術(shù)加工法的工藝過程是：不銹鋼制品→絲印→蝕刻→堿處理→絲印→氧化著色→堿處理→成品。不銹鋼制品的蝕刻美術(shù)加工法工藝過程是：不銹鋼制品→絲印→蝕刻→堿處理→氧化著色→成品。不銹鋼的化學(xué)著色法，不使用顏料及染料，而是把不銹鋼浸泡在加溫的濃硫酸鉻溶液中，進(jìn)行化學(xué)著色，其特點(diǎn)是耐食品性好。這種加工方法中所使用的油墨，要有非常強(qiáng)的耐酸性，一般使用與處理工藝相適應(yīng)的具有特殊性能的UV硫化油墨。沖壓加工304不銹鋼工具柜不銹鋼制品，特別是不銹鋼帶，很多時(shí)候工廠的最原始加工方式就是利用沖床進(jìn)行沖壓制品。沖壓包括直沖和拉伸兩種方式，一般硬度低于1/2都是利用拉伸和彎曲，硬度高于1/2偏硬的，都是直沖。生銹原因播報(bào)編輯304不銹鋼材料出現(xiàn)生銹現(xiàn)象，可能有以下幾個(gè)原因：氯離子氯離子廣泛存在，比如食鹽/汗跡/海水/海風(fēng)/土壤等等。不銹鋼在氯離子存在下的環(huán)境中，腐蝕很快，甚至超過普通的低碳鋼。所以對(duì)不銹鋼的使用環(huán)境有要求，而且需要經(jīng)常擦拭，除去灰塵，保持清潔干燥。美國有一個(gè)例子：某企業(yè)用一橡木容器盛裝某含氯離子的溶液，該容器已使用近百余年，上個(gè)世紀(jì)九十年代計(jì)劃更換，因橡木材料不夠現(xiàn)代，采用不銹鋼更換后16天容器因腐蝕泄漏。固溶處理合金元素沒有溶入基體，致使基體組織合金含量低，抗蝕性能差。晶間腐蝕這種不含鈦和鈮的材料有晶間腐蝕的傾向。加入鈦和鈮，再配以穩(wěn)定處理，可以減少晶間腐蝕。在空氣中或化學(xué)腐蝕介質(zhì)中能夠抵抗腐蝕的一種高合金鋼，不銹鋼是具有美觀的表面和耐腐蝕性能好，不必經(jīng)過鍍色等表面處理，而發(fā)揮不銹鋼所固有的表面性能,使用于多方面的鋼鐵的一種，通常稱為不銹鋼。代表性能的有13鉻鋼，18-8鉻鎳鋼等高合金鋼。從金相學(xué)角度分析，因?yàn)椴讳P鋼含有鉻而使表面形成很薄的鉻膜，這個(gè)膜隔離開與鋼內(nèi)侵入的氧氣起耐腐蝕的作用。為了保持不銹鋼所固有的耐腐蝕性，鋼必須含有12%以上的鉻。用于需要焊接的場(chǎng)合。較低的碳含量使得在靠近焊縫的熱影響區(qū)中所析出的碳化物減至最少，而碳化物的析出可能導(dǎo)致不銹鋼在某些環(huán)境中產(chǎn)生晶間腐蝕（焊接侵蝕）。表面痕表面痕現(xiàn)象是指304不銹鋼深加工或者加工產(chǎn)品研磨后，在產(chǎn)品表面發(fā)生線裝或者點(diǎn)狀的凹點(diǎn)痕缺陷。原因：表面、模具表面有異物，壓邊墊表面有傷疤。對(duì)策：在加工之前去除異物，傷疤，還可以通過充分研磨去除桔皮。桔皮現(xiàn)象是指304不銹鋼成型品在研磨或者其他情況下，表面產(chǎn)生像桔皮一樣的形狀的現(xiàn)象。原因：研磨不充分 ，加工越大桔皮越嚴(yán)重， 原材料晶粒粗大，熱處理軟化。304不銹鋼對(duì)策：深加工產(chǎn)品充分研磨，選擇適合的熱處理?xiàng)l件，控制原材料的晶粒度。新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報(bào)不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2024?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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