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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)12504()Cr调质251A1.oo300300500500-8001007570656080
