Kahulugan at Layunin

4.1 Ang patong na naka attach sa substrate ay pahabain kapag ang laki ng substrate ay hindi matatag, or bend during the manufacturing of the item or when the item is abused in use. These test methods can be used to assess the ability of the attached coating to resist cracking when stretched. They can be used to assess 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.

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

ASTM D522-2021 Axial Bending Test para sa Organic Coating

1.2 Values expressed in SI units or ink-pound units shall be considered standards, ayon sa pagkakabanggit. The values specified in each system are not necessarily exactly equal; Kaya nga, to ensure compliance with the standards, each system should be used independently 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 mga 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 This international Standard has been developed in accordance with the internationally accepted standardization principles established in the decisions of the Committee on Technical Barriers to Trade (TBT) of the World Trade Organization on the Formulation of International standards, guidelines and recommended principles.