ASTM D522/D522M-2021 Standard Test Method for Bending Tests on Mandrids with Organic Coatings

Kahulugan at Layunin
4.1 When the size of the substrate is not stable, the coating attached to the substrate will elongate, or when the product is bent during the manufacturing process or the product is abused in use. These test methods can be used to evaluate the ability of the attached coating to resist cracking when elongated. They are useful in assessing the flexibility of coatings on flexible substrates. The elongation of the coating can also be tested using test method D2370. The correlation between the elongation rates determined according to the test methods D522 / D522M and D2370 is unknown.

ASTM D522/D522M-2021 Standard Test Method for Bending Tests on Mandrids with Organic Coatings

Saklaw ng
1.1 These test methods include determining the cracking resistance (flexibility) of organic coatings attached to metal plates or rubber-type material substrates.

1.2 Values expressed in SI units or ink-pound units should be treated separately as standard values. The values specified in each system are not necessarily the same; Kaya nga, to ensure compliance with the standards, each system should be used independently of each other and the values of the two systems should not be combined.

1.3 Ang pamantayang ito ay hindi nilayon upang matugunan ang lahat ng mga isyu sa kaligtasan, kung meron man, na nauugnay sa paggamit nito. Responsibilidad ng gumagamit ng pamantayang ito na magtatag ng angkop na kaligtasan, mga kasanayan sa kalusugan at kapaligiran at upang matukoy ang pagiging angkop ng mga paghihigpit sa regulasyon bago gamitin.

1.4 Ang internasyonal na Pamantayang ito ay binuo alinsunod sa mga internasyonal na kinikilalang prinsipyo ng standardisasyon na itinatag sa Desisyon sa mga Prinsipyo para sa Pag unlad ng Internasyonal na Pamantayan, Mga Patnubay at Rekomendasyon na inilabas ng Komite sa mga Teknikal na Hadlang sa Kalakalan ng World Trade Organization.

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