耐热铸铁件的牌号和化学成分
类别 | 牌号 | 化学成分(质量分数)(%) | |||||||
C | Si | Mn | P | S | Cr | Al | |||
≤ | |||||||||
耐热铸铁 | RTCr | 3.0~3.8 | 1.5~2.5 | 1.0 | 0.20 | 0.12 | 0.50~1.00 | -- | |
RTCr2 | 3.0~3.8 | 2.0~3.0 | 1.0 | 0.20 | 0.12 | >1.00~2.00 | -- | ||
RTCr16 | 1.6~2.4 | 1.5~2.2 | 1.0 | 0.10 | 0.05 | 15.00~18.00 | -- | ||
RTSi5 | 2.4~3.2 | 4.5~5.5 | 0.8 | 0.20 | 0.12 | 0.50~1.00 | -- | ||
耐热球墨铸铁 | RTQSi4 | 2.4~3.2 | 3.5~4.5 | 0.7 | 0.10 | 0.03 | -- | ||
RTQSi4Mo | 2.7~3.5 | 3.5~4.5 | 0.5 | 0.10 | 0.03 | Mo:0.3~0.7 | -- | ||
RTQSi5 | 2.4~3.2 | >4.5~5.5 | 0.7 | 0.10 | 0.03 | -- | -- | ||
RTQA14Si4 | 2.5~3.0 | 3.5~4.5 | 0.5 | 0.10 | 0.02 | -- | 4.0~5.0 | ||
RTQA15si5 | 2.3~2.8 | >4.5~5.2 | 0.5 | 0.10 | 0.02 | -- | >5.0~5.8 | ||
RTQA122 | 1.6~2.2 | 1.0~2.0 | 0.7 | 0.10 | 0.03 | -- | 20.0~24.0 |