ISO 5940-1981 标准详情
- 标准号:ISO 5940-1981
- 中文标题:铝生产用碳素材料 电极用沥青 用环和球法测定软化点
- 英文标题:Carbonaceous materials for the production of aluminium; Pitch for electrodes; Determination of softening point by the ring-and-ball method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1981-05
Specifies a method using a disc-shped test piece to be prepared by moulding a test portion ina ring which is fitted into a heated bath. A steel ball is placed on the upper surface of the test piece. Then the temperature (softening temperature) is det
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