聚甲醛塑料，俗称赛钢，为结晶性热可塑性塑料，具明显熔点165~175℃，性质Zui接近金属。
优点 1、具高机械强度和刚性
2、Zui高的疲劳强度
3、环境抵抗性、耐有机溶剂性佳
4、耐反覆冲击性强
5、广泛的使用温度范围(-40℃~120℃)
6、良好的电气性质
7、复原性良好
8、具自已润滑性、耐磨性良好
9、尺寸安定性优
缺点 1、加工过程若长时间高温下易起热分解
2、无自熄性
3、抗酸性差
4、成形收缩率大
用途 电子电器：洗衣机、果汁机零件、定时器组件
汽 车： 车把零件、电动窗零件
工业零件：机械零件、齿轮、把手、玩具、螺杆
She thought him incredibly handsome. Carlo Rizzi hadworked in the open desert air while very young--- heavy laborer'swork. Now he had tremendous forearms and hisshoulders bulged126 the jacket of his tux.He basked127 in the adoring eyes of his bride and filledher glass with wine. He was elaborately courteous128 toher as if they were both actors in a play. But his eyeskept flickering129 toward the huge silk purse the bridewore on her right shoulder and which was now stuffed full of moneyenvelopes. How much did it hold? Ten thousand? Twenty thousand?Carlo Rizzi smiled. It was only the beginning. He had, after all,married into a royal family. They would have to take care ofhim.