铸铁牌号与化学成分.doc

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1、铸铁牌号成分1.球墨铸铁牌号阶段百分含量(%)CSiMnP≤S≤MgReMoCuQT900~2孕育前3.5~3.7≤0.500.080.025孕育后2.7~3.00.03~0.050.025~0.0450.15~0.250.5~0.7QT800~2孕育前3.7~4.0≤0.500.070.03孕育后2.50.390.82QT700~2孕育前3.7~4.00.5~0.80.080.02孕育后2.5~2.60.035~0.0650.035~0.0650.15~0.400.4~0.8QT600~3孕育前3.6~3.80.5~0.70

2、.080.025孕育后2.0~2.40.035~0.050.025~0.0450.5~0.75QT500~7孕育前3.6~3.8≤0.600.080.025孕育后2.5~2.90.03~0.05QT450~10孕育前3.4~3.9≤0.500.070.03孕育后2.2~2.80.03~0.060.02~0.04QT400~15孕育前3.5~3.9≤0.500.070.02孕育后2.5~2.90.04~0.060.03~0.05QT400~18孕育前3.6~3.9≤0.500.080.025孕育后2.2~2.80.04~0.06

3、0.03~0.052.灰铁牌号尺寸化学成分(%)CSiMnPSHT100所有尺寸3.2~3.82.1~2.70.5~0.8<0.3≤0.15HT150<1515~3030~50>503.3~3.73.2~3.63.1~3.53.0~3.42.0~2.42.0~2.31.9~2.21.8~2.10.5~0.8<0.2≤0.12HT200<1515~3030~50>503.2~3.63.1~3.53.0~3.43.0~3.21.9~2.21.8~2.11.5~1.81.4~1.70.6~0.90.7~0.90.8~1.00.8~1

4、.0<0.15<0.15<0.15<0.15≤0.12≤0.12≤0.12≤0.12HT250<1515~3030~50>503.2~3.53.1~3.43.0~3.32.9~3.21.8~2.11.6~1.91.5~1.81.4~1.70.7~0.90.8~1.00.8~1.00.9~1.1<0.15~~~≤0.12~~~HT300<1515~3030~50>503.1~3.43.0~3.32.9~3.22.8~3.11.5~1.81.4~1.71.4~1.71.3~1.60.8~1.00.8~1.00.9~1.11.0~1

5、.2~~~~~~~~HT350<1515~3030~50>502.9~3.22.8~3.12.8~3.12.7~3.11.4~1.71.3~1.61.2~1.51.1~1.40.9~1.21.0~1.31.0~1.31.1~1.4~~~~~~~~3．蠕墨铸铁牌号化学成分(%)CSiMnPSHT1003.4~3.62.4~3.00.4~0.6<0.07≤0.064．耐热铸铁高硅耐热铸铁：  称牌 号化学成分（%）CSiMnPSCr中硅耐热铸铁RTSi~5.52.2~3.05.0~6.0<1.0<0.2<0.120.5~0.9含铬

6、耐热铸铁RTCr~0.82.8~3.61.5~2.5<1.0<0.3<0.120.5~1.1含铬耐热铸铁RTCr~1.52.8~3.61.7~2.7<1.0<0.3<0.121.2~1.9高铝耐热铸铁：称化学成分（%）CSiMnPSAL中铝耐热铸铁2.5~3.21.6~2.30.6~0.85.5~7.0高铝耐热铸铁1.2~2.01.3~2.0<0.7<0.4<0.0320~24高铬耐热铸铁：名称化学成分（%）CSiMnPSCr高铬耐热铸铁RTCr161.6~2.41.5~2.2<1.0<0.10 <0.0515~18高铬耐热铸

7、铁RTCr280.5~1.00.5~1.30.5~0.8<0.10<0.0826~305.可锻铸铁I牌号C(%)Si(%)Mn(%)P(%)S(%)AB一般KTH300－06 KTH350－10 KTH330－08 KTH370－122.7~3.12.5~2.92.4~2.82.2~2.50.7~1.10.8~1.20.9~1.41.0~1.50.3~0.60.3~0.60.3~0.60.3~0.6＜0.2＜0.2＜0.2＜0.20.180.180.120.12Al~Bi孕育处理KTH300－06 KTH350－10 KTH3

8、30－08 KTH370－122.7~2.92.6~2.82.4~2.62.3~2.51.3~1.51.4~1.61.5~1.71.6~1.80.4~0.60.4~0.60.4~0.60.4~0.6＜0.12＜0.12＜0.12＜0.12≤0.20≤0.18≤0.12≤0.1