JBZQ 4288-1986 合金结构钢.pdf

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1、热加工行业论坛www.rjghome.comJB/ZQ4288-86国家机械工业委员会重型机械局企业标准代替Q/ZB61-73合金结构钢共14页第1页本标准适用于合金结构钢的锻件。1化学成分1.1合金结构钢的化学成分应符合表1的规定。表1化学成分％钢号CSiMnP≤S≤CrMoNi其它20SiMn0.16~0.220.60~0.801.00~1.300.0350.035－－－－35SiMn0.32~0.401.10~1.401.10~1.400.0350.035－－－－50SiMn0.46~0.540.80~1.100.80~1.100.0350.

2、035－－－－S16MnCr0.14~0.190.15~0.401.00~1.300.0350.0350.80~1.10－－－S20MnCr0.17~0.220.15~0.401.00~1.400.0350.0351.10~1.30－－－Ti20CrMnTi0.17~0.240.20~0.400.80~1.10－－1.00~1.30－－0.06~0.1220MnMo0.17~0.230.20~0.400.90~1.300.0350.035－0.15~0.25－－S25CrMo0.22~0.290.15~0.400.50~0.800.0350.035

3、0.90~1.200.15~0.30－－35CrMo0.32~0.400.20~0.400.40~0.700.0350.0350.80~1.100.15~0.25－－S42CrMo0.38~0.450.15~0.400.50~0.800.0350.0350.90~1.200.15~0.30－－S50CrMo0.46~0.540.15~0.400.50~0.800.0350.0350.90~1.200.15~0.30－－20CrMnMo0.17~0.240.20~0.400.90~1.200.0350.0351.10~1.400.20~0.30－－N

4、b18MnMoNb0.16~0.220.20~0.401.20~1.500.0350.035－0.45~0.60－0.02~0.15V42MnMoV0.33~0.451.20~1.500.20~0.400.0350.035－0.20~0.30－0.10~0.20S15Cr2Ni20.12~0.170.15~0.400.40~0.600.0350.0351.40~1.701.40~1.70－－3.25~20Cr2Ni40.17~0.230.17~0.370.30~0.600.0300.0301.25~1.75－－3.751.40~S17Cr2Ni2M

5、o0.14~0.190.15~0.400.40~0.600.0350.0351.50~1.800.25~0.35－1.601.80~S30Cr2Ni2Mo0.26~0.340.15~0.400.30~0.600.0350.0351.80~2.200.30~0.50－2.201.40~S34Cr2Ni2Mo0.30~0.380.15~0.400.40~0.700.0350.0351.40~1.700.15~0.30－1.702.75~34CrNi3Mo0.30~0.400.17~0.370.50~0.800.0350.0350.70~1.000.25

6、~0.40－3.251.25~40CrNiMo0.37~0.440.17~0.370.50~0.800.0300.0300.60~0.900.15~0.25－1.754.00~W18Cr2Ni4W0.13~0.190.17~0.370.30~0.600.0300.0301.35~1.65－4.500.80-1.20热加工行业论坛www.rjghome.com续表1化学成分％钢号CSiMnP≤S≤CrMoNi其它Al38CrMoAl0.35~0.420.20~0.400.30~0.600.0350.0301.35~1.650.15~0.25－0.70

7、~1.1020Cr0.17~0.240.20~0.400.50~0.800.0350.0350.70~1.10－－－40Cr0.37~0.450.50~0.800.20~0.400.0350.0350.80~1.10－－－50Cr0.47~0.540.20~0.400.50~0.800.0350.0350.80~1.10－－－*凡钢号前冠以“S”符号，表示采用联邦德国西马克公司（SMS）的钢号。1.2钢中的残余元素含量规定如下：Cr≤0.35％Ni≤0.35％Cu≤0.20％1.3锻件成品分析结果的允许偏差应符合表2的规定。表23横截面积cm规定的

8、最大范围元素≤650＞650～1300＞1300～2600＞2600～5200＞5200～10400＞10400％超过规定