锻件用结构钢牌号和力学性能

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1、锻件用结构钢牌号和力学性能(1)碳素结构钢的牌号和化学成分序号牌号化学成分（质量分数）（%）热处理状态截面尺寸（直径或厚度）/mm式样方向力学性能硬度HBSCSiMnCrNiMoVSPCuбb/Mpa≥бb/Mpa/mm≥δ5φAku/J≥%≥1Q2350.14-0.22≤0.300.30-0.65≤0.30≤0.30--≤0.050≤0.045≤0.30-≤100纵向33021023---100-300纵向3201952243--300-500纵向3101852138--500-700纵向3001752038--2150.12-0.190.1

2、7-0.370.30-0.65≤0.25≤0.25--≤0.035≤0.035≤0.25正火+回火≤100纵向32019527554797-143100-300纵向31016525504797-143300-500纵向30014524454397-1433200.17-0.240.17-0.370.30-0.65≤0.25≤0.25--≤0.035≤0.035≤0.25≤100纵向340215245043103-156正火或正火+回火纵向330195234539103-156100-250250-500纵向320185224039103-156

3、500-1000纵向300175203535103-1564250.22-0.300.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火或正火+回火≤100纵向420235225039112-170100-250纵向390215204831112-170250-500纵向380205184031112-1705 300.27-0.350.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火或正火+回火≤100纵向470245194831126-179100-3

4、00纵向460235194627126-179300-500纵向450225184027126-179500-800纵向440215173528126-1796350.32-0.400.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火或正火+回火≤100纵向510265184328149-187100-300纵向490255184024149-187300-500纵向470235173724143-18745022520500-750纵向1632137-187750-1000纵向4302151528

5、20137-187调质≤100纵向550295194847156-207100-300纵向530275184039156-207正火+回火100-300切向470245133020-300-500切向450225122820-500-750切向430215112416-750-1000切向410205102216-7400.37-0.450.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火+回火≤100纵向550275174024143-207100-250纵向530265173624143-207

6、250-500纵向510255163220143-207500-1000纵向490245153020143-207调质≤100纵向615340184039196-241100-250纵向590295173531189-229250-500纵向56027517--163-2198450.42-0.500.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火或正火+回火≤100纵向590295153823170-217100-300纵向570285153519163-217300-500纵向55027514

7、3219163-217500-1000纵向530265133015156-217调质≤100纵向630370174031207-302100-250纵向590345183531197-286250-500纵向59034517--187-255正火+回火100-300切向540275102516-300-500切向520265102316-500-750切向50025592112-切向48024582012-750-10009500.47-0.550.17-0.370.50-0.80≤0.25≤0.25--≤0.035≤0.035≤0.25正火+

8、回火≤100纵向610310133523-100-300纵向590295123319-300-500纵向570285123019-500-750纵向5