ASTM D4684-2002a 标准详情
- 标准号:ASTM D4684-2002a
- 中文标题:低温下发动机润滑剂的屈服应力和表观粘度的标准测试方法
- 英文标题:Standard Test Method for Determination of Yield Stress and Apparent Viscosity of Engine Oils at Low Temperature
- 标准类别:美国材料与试验协会ASTM
- 发布日期:2002
1.1 This test method covers the measurement of the yield stress and viscosity of engine oils after cooling at controlled rates over a period exceeding 45 h to a final test temperature between -10 and -40176;C. The viscosity measurements are made at a
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