抗拉强度
单铸试棒铸件抗拉强度牌号mm抗拉强度σb≥Mpa130100908017514513012022019517016027024022020029025023034029026020404080801501503002040408080150150300204040808015015030020404080801501503001020HT350350203030502040408080150150300130115180160220200260235300270115105100155145135190180165230210195265240215120110170150210190250225290260100901401301701602001852302101201059080165145130120205180165150245215195180285255225205铸件壁厚抗拉强度σb≥Mpa附铸试棒附铸试块铸件(参考值)抗拉强度抗拉强度σbcMPa
力学性能
抗剪强度τbMPa冲击韧度疲劳极限弹性模量ΕGPaασ1MPaJcm2KV
硬度等级与硬度范围
硬度等级铸件上的硬度范围HBS相应的金相组织
石墨
基体
σb≥Mpa
100
铸件壁厚mm2510
υ30mm
υ50mm
R15mmR25mmσb≥Mpa
HT100
102020303040251010202030304025101020203030404010102020303050102020303050
初晶石墨,长度2501000μm,无定向分布,含量1215
珠光体3070粗片状,铁素体3070,二元磷共晶7
HT150
150
500700150250
6090
7090
珠光体40%~片状石墨,长度12090%中粗片状,铁素体+珠H175150200~150μm,无定向分铁素体10%~光体布,含量7%~11%60%,二元磷共晶7%80%~90%片状石墨,10%~20%过冷石墨,长度60~250μm,无定向分布,含量6%~9%85%~90%片状石墨,5%~15%过冷石墨,长度60~250μm,无定向分布,含量4%~7%珠光体95中片状,铁素体5%,二元磷共晶4%
HT200
200
600800200300
25
8090
80110H195170220
珠光体
HT250
250
8001000250350
48
1001410013H21519024000
珠光体
珠光体98中细片状,二元磷共晶2%
HT300
300
10001203004500
710
80%~95%片状石1201612014珠光体(孕墨,5%~20%过冷H23521026000育铸铁)石墨,长度30~120μm,含量3%~6%
珠光体98中细片状,二元磷共晶2%
11001303505000
911
75%~90%片状石珠光体98细片1401813016珠光体(孕墨,10%~25%过冷H255230280状,二元磷共晶00育铸铁)石墨,长度60~2501%μm,含量2%~4%
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