ASTM D6351
Standard Test Method for Determination of Low Temperature Fluidity and Appearance of Hydraulic Fluids
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About This Item
ASTM D6351 is the ASTM standard for determining the low temperature fluidity and appearance of hydraulic fluids. It provides a technical basis for evaluating how a fluid behaves when chilled, helping users judge whether it remains suitably mobile and visually acceptable under cold conditions. This matters for product selection, quality control, and performance verification, especially where hydraulic systems may be exposed to low temperatures and need dependable fluid response.
ASTM D6351 standard overview
The ASTM D6351 standard focuses on a test method for assessing low temperature fluidity and appearance in hydraulic fluids. In practical terms, it supports a consistent way to observe whether a fluid continues to flow as expected and whether any visible changes occur after cold conditioning. For manufacturers, laboratories, and buyers, this creates a more reliable technical reference for comparing products and checking conformance to internal or customer requirements.
Where is ASTM D6351 used?
ASTM D6351 is commonly used in testing and specification workflows for hydraulic fluids intended for service in cooler environments. It may be applied by laboratories, fluid formulators, and quality assurance teams that need to evaluate cold-weather behavior before product release or acceptance. The standard is also useful in procurement and incoming inspection when low temperature performance is an important purchasing criterion for hydraulic fluid applications.
Practical importance of ASTM D6351
The practical value of ASTM D6351 is its role in helping users evaluate hydraulic fluid performance in a controlled, repeatable way. A standardized test method supports better comparison between products, reduces uncertainty during qualification, and helps identify fluids that may not remain suitable at low temperatures. That can aid compliance efforts, limit performance risk, and improve confidence in product selection, especially when cold-start behavior matters.
- Low temperature fluidity assessment
- Appearance evaluation after cold exposure
- Hydraulic fluid product comparison
- Quality control and acceptance testing
- Support for specification and procurement reviews
- Publication Date: 2022-07-26
- Publisher: ASTM
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