天气预报 > 其他 > 铜和铁哪个硬
铜和铁哪个硬
更新时间: 2020-10-28 00:00:00  

纯铁比纯铜硬度要硬。纯铜也就是我们常说的紫铜,布氏硬度为35到45之间。纯铁中的电磁纯铁有力学性能的测试,也有执行标准,抗拉强度大于265的情况下维氏硬度为小于195,转换为布氏硬度大概在75到85之间。

纯铜是柔软的金属,表面刚切开时为红橙色带金属光泽,单质呈紫红色。延展性好,导热性和导电性高,因此在电缆和电气、电子元件是最常用的材料,也可用作建筑材料,可以组成众多种合金。纯铁是柔韧而延展性较好的银白色金属,用于制发电机和电动机的铁芯,铁及其化合物还用于制磁铁、药物、墨水、颜料、磨料等。

关键词: 哪个

铜和铁哪个硬相关经验

天气预报

最新推荐

页面:/news/view-1760704/ | 耗时:0.8658 s | 内存:2.11 MB | 查询:4 | 缓存读取:3 写入:0 | 加载文件:25
select * from tbl_Articles WHERE ArticleID=1760704 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=1760704 LIMIT 0,1
select * from tbl_Articles_sphinx where id=1760704 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1102214,1062036,1086372,1129697,1132291,111122,151052,659676,1132049,533519,1109719,1048108,144436,1129649,1072747,121774,1101305,1107052,1125190,1094739,595503,1127899,261018,455776,1044579,305764,1129217,1068476,1073722,289534) ORDER BY field (ArticleID,1102214,1062036,1086372,1129697,1132291,111122,151052,659676,1132049,533519,1109719,1048108,144436,1129649,1072747,121774,1101305,1107052,1125190,1094739,595503,1127899,261018,455776,1044579,305764,1129217,1068476,1073722,289534)