ASTM D4684-2012 标准详情
- 标准号:ASTM D4684-2012
- 中文标题:测定发动机油低温下屈服应力和表观粘度的试验方法
- 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:2012
5.1x00a0;When an engine oil is cooled, the rate and duration of cooling can affect its yield stress and viscosity. In this laboratory test, a fresh engine oil is slowly cooled through a temperature range where wax crystallization is known to occur, f
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