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Q460合金圓鋼-合金結(jié)構(gòu)鋼
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[3]。通過添加微合金元素提升強(qiáng)度，并控制低碳當(dāng)量以保證焊接性。屈服強(qiáng)度隨厚度增加階梯式降低，如厚度≤16mm時≥460兆帕，100-150mm時≥380兆帕 [1] [5]。廣泛應(yīng)用于橋梁、船舶、高壓容器及工程機(jī)械領(lǐng)域。我國自主研發(fā)的厚度達(dá)110毫米的鋼成功用于“鳥巢”鋼結(jié)構(gòu)，突破進(jìn)口依賴 [4]。生產(chǎn)工藝包括優(yōu)化合金成分、控軋控冷（TMCP）技術(shù)及取消熱處理以降低成本，典型牌號如D采用碳當(dāng)量控制與微合金化設(shè)計 [2-3] [5]。中文名伸長率≥17%類 型低合金高強(qiáng)度鋼沖擊試驗℃沖擊試驗：≥34J目錄1鋼種2牌號表示3化學(xué)成分4力學(xué)性能鋼種播報編輯Q代表鋼材的強(qiáng)度，460代表460兆帕，兆是10的6次方，帕是壓強(qiáng)單位帕斯卡。就是鋼材受力強(qiáng)度達(dá)到460兆帕?xí)r才會發(fā)生塑性變形，也就是當(dāng)外力泄掉后，鋼材只能保持受力的形狀而無法回復(fù)原形，這個強(qiáng)度要比一般鋼材大。在保證低碳當(dāng)量的基礎(chǔ)上，適當(dāng)?shù)脑黾恿宋⒑辖鹪氐暮?。良好的焊接性能要求鋼材碳?dāng)量低，而微合金元素的增加在增加鋼材強(qiáng)度的同時，也會增加鋼材的碳當(dāng)量。但好在增加的碳當(dāng)量很少，所以不會影響鋼材的可焊性。牌號表示播報編輯牌號表示方法鋼的牌號由代表屈服強(qiáng)度的漢語拼音字母，屈服強(qiáng)度數(shù)值，質(zhì)量等級符號三個部分組成，例如：C。其中：Q—鋼的屈服強(qiáng)度的“屈”字漢語拼音首位字母；460—屈服強(qiáng)度數(shù)值，單位MPa；C—質(zhì)量等級為C級（等級分為C,D,E）；當(dāng)需方需要鋼板具有厚度方向性能時，則在上述規(guī)定的牌號后加上代表厚度方向（Z向）性能級別的符號，例如：CZ15。化學(xué)成分播報編輯牌號等級化學(xué)成分（質(zhì)量分?jǐn)?shù)）(%)C≤Mn≤Si≤P≤S≤V≤Nb≤Ti≤AI≥Cr≤Ni≤C0.201.800.600.0300.0300.200.110.200.0150.300.80D0.0300.025E0.0250.020力學(xué)性能播報編輯力學(xué)性能屈服：≤16mm：≥460；16—40mm：≥440；40—63mm：≥420；63—80mm：≥400；80—100mm：≥400；100—150mm：≥380；抗拉強(qiáng)度：550—720。伸長率：≥17%。沖擊試驗：0℃沖擊試驗：≥34J。 [1]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?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?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= 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