ASTM D4289 PDF

We perform testing by ASTM D to evaluate the compatibility of lubricants with elastomers by measuring the changes in an elastomer immersed in lubricant . ASTM D()e1. Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids. standard by ASTM. Buy ASTM D TEST METHOD FOR ELASTOMER COMPATIBILITY OF LUBRICATING GREASES AND FLUIDS from SAI Global.

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ASTM D – 03 Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids

To fully assess dimensional changes from chemical ageing, other characteristics are monitored r4289 well, such as volume, thickness and density. To ensure full saturation, the testing ran for 2, hours, or 12 weeks. Approximately 25 percent of the material-fluid combinations that successfully passed at the day mark, soon began to fail near or after 60 days. Testing of fluids was not included in Test Method D – 95 and earlier versions.

The company ran chemical compatibility simulations between 60 to 90 days, and in some cases longer. Add to Alert PDF. Fluid and seal manufacturers routinely perform their own tests, which usually result in compatibility ratings in broad aztm for entire families of elastomers. It is recommended that the agreed upon precision values be stated in the user’s lubricant specification.

Link to Active This link will always route to the current Active version of the standard. No other units of measurement are included in this standard. Note The scope of this test method now includes the evaluation of the elastomer compatibility of both lubricating fluids and greases. You may delete a document from your Alert Profile at any time.

But volume swell does not indicate chemical reaction on its own. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. The duration times dedicated to the tests are not standardized, nor are they often specified. Higher temperatures were used for specific high-temperature applications.

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An increase in mass might also indicate fluid absorption, and a loss in mass usually indicates chemical degradation. The ultimate purpose of a chemical compatibility program is to evaluate the ability of an elastomer to function as a seal in its intended application when exposed to a working fluid.

You may delete a document from your Alert Profile at any time. Standards Subsctiption may be the perfect solution. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

The times vary considerably among manufactures, usually ranging from a week to 30 days. In most cases, testing reveals little to no information about any actual changes in material properties.

No other units of measurement are included in this standard. Similarly, this test method can be used in specifications for lubricating fluids as well. And, it is impossible to accurately deduce material changes for one material based on the results of another, even if the materials are in the same family. Already Subscribed to this asym.

In the System Seals trials, all of the materials underwent additional testing, included breaking points, tensile strength, elongation, volume swell, abrasion resistance and hardness — all qualities required for safe seal performance and longevity.

Engineering Asrm The ultimate purpose of a chemical compatibility program is to evaluate the ability of an elastomer to function as a seal in its intended application when exposed to a working fluid.

During the testing d428 became necessary to understand how the mechanical properties changed from exposure. Testing of fluids was not included in X4289 Method D —95 and earlier versions. ASTM D, for instance, typically incorporates tests with a maximum exposure time of 70 hours, which significantly limits long-term predictive capabilities.

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This standard is not included in any packages. Zstm address these limitations, testing standards have been established to evaluate compatibility. Please first log in with a verified email before subscribing to alerts.

In this respect, this test method is useful for lubricant specifications for example, Specification D Industry Standard Tests Theoretical models that have been established to predict fluid compatibility are based largely on the laws of chemistry.

For specific warning statements, see 8.

Standard Test Method for Elastomer Compatibility of Lubricating Greases and Fluids

This was found to be a significant gap in historic testing methods. Need more than one copy? Inasmuch as the precision values apply only to the elastomers specified in Annex A1 of Test Method Dwhen a lubricant specification requires some other elastomer, the user and supplier of the lubricant should agree to the values of acceptable precision.

This significantly extended most of the industry standards, which rely on an average duration of about a month. However, they can be correlated in many instances. Two HNBRs, for instance, might demonstrate different property changes depending on the levels of fillers and additives.

Please first log in with a verified email before subscribing to alerts. To advance the compatibility study, application testing should be performed. Testing of fluids was not included in Test Method D —95 and earlier versions.

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For example, a dynamic seal may be required to retain more of its original properties than a static seal. For ASTM D, used for automotive greases, a limited number of property changes are recommended for evaluations. Subscription pricing is determined by: Standards Subsctiption may d2489 the perfect solution.

This means that a quarter of all tests commonly performed throughout the industry for 28 days will likely show false results.

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