1、材料类型材料标号拔面尺寸mm热处理材料性能拉压弯曲扭转剪切抗拉强度Oh屈服强度OS/MPaII1.IIIII1.IIIIIIIII1HIIIIOiIOO0XnTnTfI普通碳钢Q2I5I(X)热扎b335-410os)85-21514512590175140105959()6010()9060Q235。,3754600s20523516014()I(M)1901601201059565110I(K)70Q275oh490-610。s235-275175150)1021()1701301151057012()1108()优质碳钢20W1.OO正火CN1.os2451751451052101651
2、25115105701201057525M50s275195160115230175135125115751351208035OS30s3!52101801252502001501351208014512085调质Ob55O-75O。320370210185130250205155135125851451208545正火ob600os35523021452702201701501359016014095调质ob630-800。3707302502151503002351801601501.1751501005025正火b630s37525021515()30023518016015()I(X)
3、175150I(X)W100调质OA700。s426523516531026019517015510518()160110/MPa普通碳钢及优质碳钢构件基本许用应力材料标号截面尺寸mn热处理材料性能拉压弯Iib扭转剪切抗拉强度Qh屈服强度OS/MPaII1.III111IIII11III1IIH1.I1.IOOOTnTnTnTZG200-400100正火及回火400os20013512090160135105908060958560ZG230-45011b450s23O15514()I(M)185155120I(X)85651109065ZG270-5(K)”500。s27()17516011
4、5210175135115I(M)7512010575ZG310-570O67011s3IO19017012523019014512510580130HO80ZG340-640ob640s34O20018013()2402051551301158714012()87表2/MPa碳钢铸件基本许用应力材料标号壁厚mm抗压强度/MPa抗拉强度/MPa中心抗压弯曲扭剪压拉拉压II1.I11IIIII1.III1I1.IIII0|IOIOiHT-1502.5-10500-7()01751408050282050302345241810-2()1451408041241741251937201520-30
5、1301408037211537221733181330-5012014080341914342115311712HT-2002.5-106()-()0220170I(M)63362563382857312310-2019517()I(X)56322256332550272020-3017017010049281949292244241730-50160170I(X)462618462721412216HT-2504.0-10800700027023013077443177463569372810-2024023013069392769413162332520-3022()2301306336
6、2563382857312330-50200230130573223573426512821HT-30010-20100o-120029028516083473383503775403020-3025028516071412971433264352630-5()230285160663726663930593224HT-35010-20I100730034031518097553997584487473520-302903151808347338350377540303O5OI126p1.315180744230744433673627附表钢铁的许用应力（kgf/cmD载荷软钢中硬钢铸钢钢铁I
7、90015(X)120078006001200300拉伸I1.60010008007200400-600200III300-500400600200-4100I900150012001800900-1500900压缩I1.600-10008007200600100060019001500I2-18OO7501200弯曲I1.MX)-I(XX)8007200500800III3(X)5(X)4(X)60()250-4(X)I72012009601440480-960300剪切11480800640960320-640200III240400320480160-320I(X)I6007200900
8、1440480-960扭转11400800640-960320-640I1.1.200400320480160-320（注）我荷指【：静载荷II：重豆载荷III：交变就荷表4许用弯曲应力。3材料极限强度。kgfcm-许用应力。kgfcm2稔定载荷冲击或脉动载荷反豆交变载荷40001300700400碳素、钢500017007504506000200095055070002300II(X)650合金钢800027(X)1300750I(XM)O33001600900铸钢4000I(XX)5003005000I2(X)7(X)400轴的常用材料及许用涔曲应川刈钢号处理毛坯直径(mm)机械性能馔度H
9、B许用弯曲应力。Jwkgfcm2Obkgf/mnrOSkgf/mnr0-1kgfmm235火火火火质回+火正正正正调25100100-300300500500750100100-35452504846565432272624233028262524232226.525.5187143187143-187137187131187163201144-201I1.(X)1050I(KX)9609201100108045火火火火质回如正正正正调25I(X)100-300300-5005007002(X)6160585654653630292827362827.527262530241170-20716
10、3-20715620714920718722911501150113010801050125035SiMn42SiMn调质25W1001003003004004(X)-5(X)90807570657552454()3846403532.531.5229-286217269217-255197-255I6I4140()1350130040MB调质25W2001007580505036240-2901750145038SiMo调质1A1.oo300300500500-800757270606055504038363530228-286217-269197-241186-241I51450M(M)1
11、2504()Cr调质251A1.oo300300500500-8001007570656080525040355037353129241286241286229260217-2601750I514801300I2表5注：表中素-I适用于如果光洁度提高或降低，。川应相应提窗或降低515%.表6轴类零件允许变形的参考数值变形名称变形允许值挠度V一般用途的轴需要提高刚度的转轴安装齿轮的轴安装蜗轮的轴V=(0.03-0.0005)IV=0.0002Iv=(0.010.05)niV=(0.01.-0.05)m1.转角O滑动釉承向心球轴承向心球面轴承圆柱滚子轴承圆锥滚子轴承安装齿轮的轴承=0.001rad0J=0.(X)5radI0=0.(X)5rad0=O,OO25111.d=0.0016rad=O.(X)1.rad注：I轴承之间的长度(mm)：n齿轮法面模数(mm)：M.一一期轮的端面模数(mm)。表7轴弯曲的允许变形量【利名称挠度允许值山Cm一般用途的轴刚度要求高的轴安装齿轮的轴安装甥轮的轴0.0(X)30.0005I(跨度)0.0002I0.01-0.03O.O2-O.O5名称倾向允许值I(UnKi装齿轮或滑动轴承处向心球轴承处向心球面轴承处短圆柱滚子轴承处圆锥滚子轴承处0=0.001.(J=0.5上0.005I0=O.OO250=O.OOI6
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