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1、钢号质量等级化学成分（%）s (MPa)b(MPa)CMnSiSP钢材厚度（直径，mm）161640406060100Q1950.060.120.250.50.30.0500.045(195)（185）315390Q215A0.090.150.250.550.30.0500.045215205195185335410B0.045Q235A0.140.220.250.50.30.0500.045235225215205375460B0.120.20.250.50.045C0.180.350.80.040.04D0.170.0350.035Q255A0.180.280.40.70.30.0500.
2、045255245235225410510B0.045Q2750.280.380.50.80.350.0500.045275265255245490610Q3450.120.21.21.6Si：0.20.6280350480520钢号化学成分（%）力学性能s(MPa)b(MPa)5(%)(%)Ak(J)CMnSiSP08F0.050.110.250.50.030.035175295356010F0.070.140.250.50.07185315335515F0.120.190.250.50.072053552955080.050.120.350.650.170.371953253360100.
3、070.140.350.650.170.372053353155150.120.190.350.650.170.372253752755200.170.240.350.650.170.372454102555250.220.30.50.80.170.37275450235071300.270.350.50.80.170.37295490215063350.320.40.50.80.170.37315530204555400.370.450.50.80.170.37335570194547450.420.50.50.80.170.37355600164039500.470.550.50.80.1
4、70.37375630144031550.520.60.50.80.170.373806451335600.570.650.50.80.170.374006751235650.620.70.50.80.170.374106951030700.670.750.50.80.170.37420715930750.720.80.50.80.170.378801080730800.770.850.50.80.170.379301080630850.820.90.50.80.170.37980113063015Mn0.120.190.71.00.170.37245410265520Mn0.170.240.
5、71.00.170.37275450245025Mn0.220.30.71.00.170.3729549022507130Mn0.270.350.71.00.170.373155402045632 / 335Mn0.320.40.71.00.170.370.03533556019455540Mn0.370.450.71.00.170.3735559017454745Mn0.420.50.71.00.170.3737562015403950Mn0.480.560.71.00.170.3739064513403160Mn0.570.650.71.00.170.37410695113565Mn0.620.70.91.20.170.3743073593070Mn0.670.750.91.20.170.3745078583018MnMoNb钢化学成分（%）力学性能CMnSiNbMos(MPa)b(MPa)5(%)0.170.231.351.650.170.370.0250.050.450.654505006006501617 友情提示：方案范本是经验性极强的领域，本范文无法思考和涵盖全面，供参考!最好找专业人士起草或审核后使用。