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Q420B特種鋼板-國產(chǎn)耐磨板/高強度鋼板系列
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點低合金高強度結(jié)構(gòu)鋼伸長率δ5/%抗拉強度420N/MM^2目錄1產(chǎn)品簡介2應(yīng)用3性能產(chǎn)品簡介播報編輯Q420是一種低合金高強度結(jié)構(gòu)鋼。Q420不僅是高強度鋼，它還是低碳鋼。只是它的抗拉強度提高了一點，Q235的屈服強度是235N/mm^2而Q420的屈服強度是420N/mm^2,由于它的含碳量低不能調(diào)質(zhì)等處理，還是無法加工軸，齒輪等工作。但它做成鋼板是很好的，強度比Q235高多了。Q420具有高的強度，良好的抗疲勞性能；高韌性和低的脆性轉(zhuǎn)變溫度；良好的冷成型性能和焊接性能；具有較好的抗腐蝕性能和一定的耐磨性能。應(yīng)用播報編輯Q420適應(yīng)于電力鐵塔、各類起重吊車、重型汽車、石油井架、高溫風(fēng)機、大型電鏟、自卸車及鉆機、煤礦液壓支架、鋼結(jié)構(gòu)等。性能播報編輯【抗拉強度】（σb/MPa）520～680【伸長率】（δ5/%）等級 δ5/%A ≧18B ≧18C ≧19D ≧19E ≧19【屈服點】（σs/MPa）厚度（直徑、邊長）/mm ≦16 ＞16～35 ＞35～50 ＞50～100σs/MPa ≧420 ≧400 ≧380 ≧360【沖擊吸收功】（Akv（縱向）/J） +20℃等級￤溫度 +20℃ 0℃ -20℃ -40℃AB ≧34C ≧34D ≧34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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Q420B化學(xué)成份范圍值:注：實際化學(xué)成分以鋼廠質(zhì)保書為準。Q420B化學(xué)成分C≦0.20Q420B化學(xué)成分Mn1.00～1.70Q420B化學(xué)成分Si≦0.55Q420B化學(xué)成分P≦0.025Q420B化學(xué)成分S≦0.025Q420B化學(xué)成分Al≧0.015Q420B化學(xué)成分Cr≦0.40Q420B化學(xué)成分Ni≦0.70Q420B化學(xué)成分V0.02～0.20Q420B化學(xué)成分Nb0.015～0.060Q420B化學(xué)成分Ti0.02～0.20 Q420B力學(xué)性能:抗拉強度520～680伸長率≧18屈服點≧420 沖擊+20℃≧34 Q420B應(yīng)用：Q420B應(yīng)用舉例大型船舶、橋梁、電站設(shè)備、中高壓鍋爐、高壓容器、機車車輛、超重機械、礦山機械、及其他大型焊接結(jié)構(gòu)件。鋼號：Q420B產(chǎn)品名稱：高強度鋼執(zhí)行標準：GB/T1591-2008數(shù)字代號：L04202交貨狀態(tài)：熱軋或正火+回火，具體交貨狀態(tài)應(yīng)在質(zhì)保書中注明。鋼廠：寶鋼、南鋼、本鋼、舞鋼等。
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