ASTM A 848 Type 2 磁性和电气材料
材料组别:
黑色金属 / 磁性和电气材料
国家与地区/标准:
美国 / ASTM
数据更新
最新更新: 2026-05
更新总数: 1
更新历史
ASTM A 848 Type 2 化学成分
化学元素
数值
单位
CAS 编号
化学元素
Al
数值
≤ 0.10
单位
%
CAS 编号
7429-90-5
化学元素
C
数值
≤ 0.020
单位
%
CAS 编号
7440-44-0
化学元素
Cr
数值
≤ 0.20
单位
%
CAS 编号
7440-47-3
A848: 2017 / 低碳磁铁的标准规范
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ASTM A 848 Type 2 物理性能
温度
ASTM A 848 Type 2 热处理
- Magnetic test specimens shall be heat treated in as following: When “Relay condition” is specified, the test specimen shall be heat treated in a dry forming gas atmosphere (5 to 15 % hydrogen in nitrogen with a dew point less than -40°C (–40°F)) at a temperature of 845°C (1550°F) for one hour at temperature and cooled at a rate from 55 to 100°C per hour (99 to 180°F per hour) to 500°C (930°F) and cooled at any rate thereafter. The magnetic behavior of parts can be stabilized by heating to 175 to 260°C (347 to 500°F) for several hours to cause over aging.
Parts fabricated from magnetic iron can be heat treated in several different manners depending on the application and the heat-treating equipment available. The lowest suggested heat treatment temperature is 700°C (1290°F). These alloys are ferritic up to a temperature of about 890°C (1635°F). Above this temperature austenite forms. Decarburization is most readily obtained in the ferritic state. Heat treatment in the austenite phase (at tempera-tures above 890°C (1635°F)) will result in grain size refinement upon cooling through the austenite to ferrite transformation.
A suggested high temperature heat treatment procedure is: heat to and hold at 850°C ± 25°C (1560°F ± 45 °F) for four hours in wet hydrogen, purge out wet hydrogen with dry hydrogen and heat to 1120°C (2048°F) and hold at temperature for four hours then cool at a rate of 55°C to 100°C per hour (99°F to 180°F per hour) to a temperature of 550°C (1022°C) followed by cooling at any convenient rate.
ASTM A 848 Type 2 机械性能
ASTM A 848 Type 2 的全球近似对照材料
显示 5 条结果，共计 5 条。
材料牌号
标准
国家与地区 / 生产商
近似类型
近似对照材料反映了不同材料间化学成分的相似性和力学性能的相似性——请务必根据具体应用场景的适用标准和条件具体核实材料的适用性。
根据您的应用场景优化材料选择 - 预约演示
- 5交叉引用
- 11化学成分
- 12机械性能
- 9物理性能
- 1热处理
- -金相组织
- -切削加工性能
- -应力-应变
- -成形性能
- -疲劳
- -断裂
- -爬行
- -焊接接头
- -涂层
- 3尺寸
- -摩擦学
- -腐蚀
- -老化
- -耐候性
- -辐照
- 4供应商总数