RQTAl4Si4耐热铸铁
耐热铸铁件(摘要) GB 9437-88
铸件牌号 化学成分
C Si Mn P S Cr Al
RTCr 3.0~3.8 1.5~2.5 ≤1.0 ≤0.2 ≤0.12 0.5~1.0
RTCr2 3.0~3.8 2.0~3.0 ≤1.0 ≤0.2 ≤0.12 1.0~2.0
RTCr16 1.6~2.4 1.5~2.2 ≤1.0 ≤0.1 ≤0.05 15~18
RTSi5 2.4~3.2 4.5~5.5 ≤0.8 ≤0.2 ≤0.12 0.5~1.0
RQTSi4 2.4~3.2 3.5~4.5 ≤0.7 ≤0.1 ≤0.03
RQTSi4Mo 2.7~3.5 3.5~4.5 ≤0.5 ≤0.1 ≤0.03 Mo0.3~0.7
RQTSi5 2.4~3.2 4.5~5.5 ≤0.7 ≤0.1 ≤0.03
RQTAl4Si4 2.5~3.0 3.5~4.5 ≤0.5 ≤0.1 ≤0.02 4.5~5.0
RQTAl5Si5 2.3~2.8 4.5~5.5 ≤0.5 ≤0.1 ≤0.02 5.0~5.8
RQTAl22 1.6~2.2 1.0~2.0 ≤0.7 ≤0.1 ≤0.03 20~24