55si2mn合金圓鋼-彈簧鋼
專業(yè)為您提供彈簧鋼牌號,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\/55si2mn"; 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); }); }(); 55Si2Mn彈簧鋼硅和錳提高彈性強度和屈強比,提高淬透性,抗回火穩(wěn)定性和抗松弛穩(wěn)定性,過熱敏感性也較小,但脫碳傾向較大,尤其是硅與碳含量較高時,碳易于石墨化,使鋼變脆。55Si2Mn彈簧鋼用作汽車、拖拉機和機車上的減振板簧和螺旋彈簧、氣缸安全閥簧,還可用作250℃以下使用的耐熱彈簧。中文名 55Si2Mn 標 準 :GB/T 1222-1984 碳 C :0.52~0.60 抗拉強度 σb (MPa):≥1274(130) 屈服強度 σs (MPa):≥1176(120) 伸長率 δ10 (%):≥6介紹材料名稱: 55Si2Mn標準:GB/T 1222-1984●特性及適用范圍:化學成分●化學成份:碳 C :0.52~0.60硅 Si:1.50~2.00錳 Mn:0.60~0.90硫 S :≤0.035磷 P :≤0.035鉻 Cr:≤0.35鎳 Ni:≤0.35銅 Cu:≤0.25力學性能●力學性能:抗拉強度 σb (MPa):≥1274(130)屈服強度 σs (MPa):≥1176(120)伸長率 δ10 (%):≥6斷面收縮率 ψ (%):≥30硬度 :熱軋,≤302HB;冷拉+熱處理,≤321HB熱處理工藝●熱處理規(guī)范及金相組織:熱處理規(guī)范:淬火870℃±20℃,油冷; 回火480℃±50℃(特殊需要時,±30℃)。金相組織:回火屈氏體?!窠回洜顟B(tài):熱軋鋼材以熱處理或不熱處理狀態(tài)交貨,冷拉鋼材以熱處理狀態(tài)交貨。對應(yīng)牌號對應(yīng)美國牌號:9260對應(yīng)日本牌號:SUP6對應(yīng)德國牌號:55Si7對應(yīng)英國牌號:251II60對應(yīng)法國牌號:56SC7對應(yīng)國際標準牌號:56SiCr7