Q275B特種鋼板-碳素鋼/模具鋼系列
專業(yè)為您提供碳素鋼/模具鋼系列牌號,材質(zhì)單,在線報價單 歡迎選購
百度百科-驗證 if (!window['__abbaidu_2020_subidgetf']) { window['__abbaidu_2020_subidgetf'] = function () { var subid = 01000000; return subid; }; } !function(){ var $ = require('wiki-common:widget/lib/jquery/jquery'); var Dialog = require('wiki-common:widget/ui/dialog/dialog'); var ClickstreamSdk = require('wiki-common:widget/util/clickstreamSdk'); var clickstream = new ClickstreamSdk.default({ appname: 'baike', platform: 'web', device: 'pc', page: 'spam', auto: true }); var sourceUrl = "\/item\/Q275B"; var fromPage = "pc_lemma_page_risk_score"; var logParam = { page: 'spam', fromPage: fromPage } clickstream.logActEvent($.extend({}, logParam, {'act_type': 'show'})); function init() { if (window.sdkMachine) { var machineSDK = new window.sdkMachine({ container: document.body, title: '訪問異常,請進行驗證', ak: 'GHm64ouBF7GGAhXNcsae9xiVByAGWhMI', deviceType: 'pc', type: 'spin', testUrl: '', initApiSuccessFn: function() { machineSDK.init(); }, errorFn: function(err) { alert('errfn___' + err.message || '') }, verifySuccessFn: function(result) { $.ajax({ type: 'GET', url: '/api/anticrawl/captchaverify', dataType: 'json', data: { ds: result.ds, passTk: result.tk, clientType: 'pc', tk: "d4b87f38b35a5e84f28e8674b41132db", sourceFrom: fromPage }, success: function(res) { if (res && res.errno === 0 && !res.isSpam) { clickstream.logActEvent($.extend({}, logParam, {'act_type': 'verify-pass'})); if (sourceUrl) { machineSDK.close(); window.location.href = sourceUrl; } } else { var submitInform = Dialog.inform({ icon: 'WARNING', mainMsg: '驗證失敗,請重新驗證' }); submitInform.show(); setTimeout(function() { submitInform.hide(); }, 3000); machineSDK.close(); init(); } } }); }, verifyFailFn: function() { }, feedbackEvent: function(feedback) { return true; }, }); } }; init(); }(); !function(){ require('wiki-common:widget/component/psLink/psLink'); var clickstream = require('wiki-common:packages/utils/logger'); clickstream.logViewPage({ page: 'all-pc' }); var tmpBaiduId = ''; require(['wiki-common:widget/util/setBaikeTmpBaiduId.es'], function (setBaikeTmpBaiduId, cookie) { setBaikeTmpBaiduId(tmpBaiduId); }); }(); 介紹對應(yīng)日本JIS牌號:SS490國際標(biāo)準(zhǔn)化組織:E275A對應(yīng)老牌號為:A5物理性能化學(xué)成分(質(zhì)量分?jǐn)?shù))(%)C:≤0.24Mn:≤1.5Si:≤0.35S:≤0.050(A級)P:≤0.045力學(xué)性能抗拉強度(σb/MPa):410-540伸長率(δ5/%):≥22(a≤40mm)≥21(a>40-60mm)≥20(a>60-100mm)≥18(a>100-150mm)≥17(a>150-200mm)其中 a 為鋼材厚度或直徑。執(zhí)行標(biāo)準(zhǔn)外部標(biāo)準(zhǔn)為:GB/T709-2006《熱軋鋼板和鋼帶的尺寸、外形、重量及允許偏差》,內(nèi)部標(biāo)準(zhǔn)為:GB/T3274-2007 《碳素結(jié)構(gòu)鋼和低合金結(jié)構(gòu)鋼熱軋厚鋼板和鋼帶》冷彎性能180° 冷彎試驗d=3a (B=2a:<60mm),d=4a(B=2a: >60~100mm),d=4.5a(B=2a: >100~200mm)其中d 為彎心直徑,B 為試樣寬度,a 為鋼材厚度或直徑。Q275介紹應(yīng)用舉例主要用于建筑橋梁工程上制作比較重要的機械構(gòu)件,可代替優(yōu)質(zhì)碳素鋼材使用,其中Q215B相當(dāng)10-15號.Q235B相當(dāng)15-20號鋼,Q255B相當(dāng)25-30號鋼,Q275B相當(dāng)35-40號鋼。