Accelerated aging/testing-rubber/related materials Archives

New ASTM D471 2012 Edition for Standard Test Method for Rubber Property—Effect of Liquids

ASTM International has just released the new ASTM D471-12, “Standard Test Method for Rubber Property—Effect of Liquids,” and it’s available now from Document Center Inc. in paper, pdf and redline format. This test method covers the required procedures to evaluate the comparative ability of rubber and rubber-like compositions to withstand the effect of liquids.

This 14-page revision is designed for testing specimens of vulcanized rubber cut from standard sheets, specimens cut from fabric coated with vulcanized rubber, or finished articles of commerce. It is not applicable to the testing of cellular rubbers, porous compositions, and compressed sheet packing.

Certain rubber articles, for example, seals, gaskets, hoses, diaphragms, and sleeves, may be exposed to oils, greases, fuels, and other fluids during service. The exposure may be continuous or intermittent and may occur over wide temperature ranges.

Properties of rubber articles deteriorate during exposure to these liquids, affecting the performance of the rubber part, which can result in partial failure.

ASTM D471 attempts to simulate service conditions through controlled accelerated testing, but may not give any direct correlation with actual part performance, since service conditions vary too widely. It yields comparative data on which to base judgment as to expected service quality.

This test method is suitable for specification compliance testing, quality control, referee purposes, and research and development work. It replaced the old Federal Specification TT-S-735, “Standard Test Fluids, Hydrocarbon,” back in September, 1998.

Document Center Inc. has been selling the ASTM standards under license agreement since the 1980’s. You can purchase them on our website, www.document-center.com, or contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com). We accept PO#’s on a net 30 basis from established customers and VISA, Mastercard and American Express. Our expert staff is here to assist you with all your standards requirements and questions.

New ASTM D2000-12 released, Standard Classification System for Rubber Products in Automotive Applications

ASTM International has just released the new 2012 Edition for ASTM D2000, “Standard Classification System for Rubber Products in Automotive Applications.” One of Document Center‘s best sellers from ASTM, the new 53 page revision provides a classification system that covers the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination). It’s intended for use in rubber products for automotive applications. However, it may serve many of the needs of other industries in much the same manner as SAE numbered steels.

This classification system is based on the premise that the properties of all rubber products can be arranged into characteristic material designations. These designations are determined by types, based on resistance to heat aging, and classes, based on resistance to swelling in oil. Basic levels are thus established which, together with values describing additional requirements, permit complete description of the quality of all elastomeric materials.

When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance, to establish the appropriate properties, test methods, and specification test limits.

Over the years, ASTM D2000 has replaced two U.S. government documents — A-A-1719, Rubber, Sheet, Solid and MIL-R-3065, Rubber, Fabricated Products — both of which are now obsolete.

ASTM D2000-12 and the other ASTM standards may all be purchased from Document Center Inc. through our website, www.document-center.com. They can be purchased in paper or pdf format, and many have redline editions available as well. For more information, contact us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com). We happy to assist you with all your standards questions and issues.

New SAE J200 2011 Edition on Classification System for Rubber Materials

SAE J200 2011 Edition, “Classification System for Rubber Materials,” has just been released. This classification system tabulates the properties of vulcanized rubber materials (natural rubber, reclaimed rubber, synthetic rubbers, alone or in combination) that are intended for, but not limited to, use in rubber products for automotive applications. This new revision replaces the previous 2008 Edition, which is now obsolete.

Ground Vehicle Standard SAE J200 is the under the jurisdiction of SAE Committee on Automotive Rubber Specifications (CARS). CARS Works closely with and receives input from ASTM Subcommittee D11.30 on Classification of Rubber Compounds with the goal to keep SAE J200 and ASTM D2000 (“Standard Classification System for Rubber Products in Automotive Applications”) technically equivalent.

This document may serve many of the needs of other industries in much the same manner as SAE numbered steels. It must be remembered, however, that this system is subject to revision when required by automotive needs. It is recommended that the latest revision always be used.

This document is based on the premise that all rubber materials intended for use in rubber products can be arranged into characteristic designations. These designations are determined by types, based on resistance to heat aging, and classes, based on resistance to swelling by oil. Basic levels are thus established which, together with values describing additional requirements, permit complete description of the quality of all rubber materials. In all cases where provisions of this document would conflict with those of the detailed specifications for a particular product, the latter shall take precedence.

When the rubber product is to be used for purposes where the requirements are too specific to be completely prescribed by this classification system, it is necessary for the purchaser to consult the supplier in advance to establish the appropriate properties, test methods, and specification test limits.

SAE J200 2011 Edition and all SAE Standards and other documents, both current and obsolete, are available from Document Center Inc. You can use the Document Center website, www.document-center.com, or phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com) us to place your order or to get additional information on any standard you may need.