ASTM D7027 PDF

The values in parentheses are for information only. Please login to your authorized staff account to use this feature. No items in cart. Search book title Enter keywords for book title search. It is important to note the difference between the instantaneous if d measurable and residual scratch damage and compare results appropriately to ensure reproducibility.

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Want this as a site license? Changes from the previous issue A redline edition is available for this document, with all changes visible. Ask Document Center Inc. Scope 1. This test method is able to characterize the scratch resistance of polymers by measuring many significant material parameters. The scratch-inducing and data acquisition process is automated to avoid user-influenced effects that may affect the results.

The values in parentheses are for information only. 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. Significance and Use 5. It is important to note the difference between the instantaneous if readily measurable and residual scratch damage and compare results appropriately to ensure reproducibility.

It is recommended that 24 hours be allowed for viscoelastic recovery when considering residual scratch depth. This type of damage is undesirable because it is evident to the human eye. The critical normal load at which this phenomenon appears serves as a benchmark in ranking material performance, especially from an aesthetic point of view.

Keywords critical load; polymer; ranking; rising load; scratch; scratch resistance; scratch visibility; whitening; ICS Number Code

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ASTM D7027 - 13

Copyright Compu-tecture, Inc. 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. Remember me for one month. Click here to download full list of books.

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ASTM D7027

Want this as a site license? Changes from the previous issue A redline edition is available for this document, with all changes visible. Ask Document Center Inc. Scope 1.

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ASTM D7027 PDF

A number in parentheses indicates the year of last reapproval. This test methodis able to characterize the scratch resistance of polymers bymeasuring many significant material parameters. The scratch-inducing and data acquisition process is automated to avoiduser-influenced effects that may affect the results. The values in parentheses are for information only. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.

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