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
Don Corleone brushed these thanks aside. "Don't I owerespect to such a friend, a friend who has been my right arm fortwenty, years?" He had understood immediately that the soon-to-bewidow did not comprehend that her husband would die this night.Genco Abbandando had been in this hospital for nearly a year dyingof his cancer and the wife had come to consider his fatal illnessalmost an ordinary part of life. Tonight was just another crisis.She babbled274 on. "Go in and see my poor husband," shesaid, "he asks for you. Poor man, he wanted to come to the weddingto show his respect but the doctor would not permit it. Then hesaid you would come to see him on this great day but I did notbelieve it possible. Ah, men understand friendship more than wewomen. Go inside, you will make him happy."