ASTM G151 PDF

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ASTM G – 00 Standard Practice for Exposing Nonmetallic. Materials in Accelerated Test Devices that Use Laboratory. Light Sources. View on Information. ASTM G UV EXPOSURE (GENERAL). This practice provides general procedures to be used when exposing nonmetallic materials in accelerated test. 21 Jun ASTM G – Designation: G – 09 Standard Practice for Exposing Nonmetallic Materials in Ac.

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ASTM G – UV EXPOSURE (GENERAL)

Specific information about methods for determining the property of a nonmetallic material before and after exposure are found in standards describing the method used to measure each property. The test material then is evaluated.

Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance ranking compared to other materials or to a control;therefore, exposure of a similar material of known performance a control at the same time as the test materials is strongly recommended.

Exposure conditions that produce unrealistic temperature differences between light and dark colored specimens. Note 5—Definitions for control and reference material that are appropriate to weathering tests are found in Terminology G Comparisons between materials are best made when they are tested at the same time in the same exposure device.

Referenced Documents purchase separately G51 documents listed below are referenced within the subject standard but are not provided as part of the standard. NOK 1 ,00 excl. There are a number of factors that may decrease the degree of correlation between astj tests using laboratory light sources and exterior exposures.

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This service is not available if you are a URL user where you do not log in with an email address. This ensures that you are always up-to-date and saves you both time and money.

Active view current version of standard. Work Item s – proposed revisions of this standard.

Link to Active This link will always route to the g1511 Active version of the standard. More specific information on how each factor may alter stability ranking of materials is given in Appendix X1. In some cases, a reference material is exposed at the same time as a test material and the exposure is conducted until there is a defined change in property of the reference material.

Information regarding the reporting of results from exposure testing of plastic materials is described in Practice D Specific information about methods for determining the property of a nonmetallic material before and after exposure are found in standards describing the method used to measure each property.

ASTM G151:10

If you need to be able to add standards to the monitoring service, you must g1151 as a user with your own username and password. Information regarding the reporting of results from exposure testing of plastic materials is described in Practice D These are inappropriate uses of reference materials when they are not sensitive to exposure stresses that produce failure in the test material or when the reference material is very sensitive to an exposure stress that has very little effect on the test material.

Differences in the spectral distribution between the laboratory light source and solar radiation. Detailed information regarding procedures to be used for specific devices are found in standards describing the particular device being used. Read more about subscriptions. Asym information is intended primarily for producers of laboratory accelerated exposure devices.

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A web subscription provides an easy and secure access to standards, and you are guaranteed to always have the latest edition.

The moment new editions of the standards you monitor are released, v151 are made, or appendixes are published, you will be alerted by email. Detailed information regarding procedures to be used for specific devices are found in standards describing the particular device being used. Acceleration factors are material dependent and can be significantly different for each material and for different formulations of the same material.

Webprint Asstm and bound. The benefits of a subscription: These acceleration factors are not valid for several reasons. Techstreet standards in subscription. Acceleration factors calculated based on the ratio of irradiance between a laboratory light source and solar radiation, even when identical bandpasses are used, do not take into consideration the effects on a material of irradiance, temperature, moisture, and aastm in spectral power distribution between the laboratory light source and solar radiation.

The relative durability of materials in actual use conditions can be very different in different locations because of differences in UV radiation, time of wetness, relative humidity, temperature, pollutants, and other factors.