Arti dan kegunaannya
5.1 Metode pengujian menentukan cakupan lapisan uji dengan mengevaluasi secara visual lapisan yang disemprotkan.

Catatan 1 Test method D2805 describes an instrumental method for determining coverage. Apply the film to a uniform thickness (misalnya. with a scraper), measure the film thickness strictly, and determine the opacity by photometry. Thus the concealment force can be determined with high precision.

5.2 Test method D6762 is not as accurate as test method D2805, but it is widely used because it is closely related to the application characteristics of paints and is simpler in terms of concept and evaluation.

ASTM D6762-2018 “Penentuan Kekuatan Penutup Lapisan dengan Evaluasi Mandiri Penyemprotan Pelapis Konstruksi”

Melangkah 1: Cakupan
1.1 This test method enables quantitative visual determination of the film thickness required for complete coverage. The film thickness is considered to test the coating’s hiding power.

1.2 The method is applicable only to sprayed coatings, but the concept can also be applied to other applications.

1.3 Values expressed in inches to pounds shall be treated as standard values. The values given in brackets are mathematical conversions of SI units for reference only and are not considered as standards.

1.4 This standard is not intended to address all safety issues associated with its use. Merupakan tanggung jawab pengguna standar ini untuk menetapkan keselamatan yang sesuai, praktik kesehatan dan lingkungan dan untuk menentukan penerapan pembatasan peraturan sebelum digunakan.

1.5 Standar internasional ini didasarkan pada prinsip-prinsip standardisasi yang diakui secara internasional yang ditetapkan dalam Keputusan Prinsip-Prinsip Pengembangan Standar Internasional, Pedoman dan Rekomendasi yang dikeluarkan oleh Komite WTO tentang Hambatan Teknis Perdagangan (TBT).

ASTM D6762-2018 “Penentuan Kekuatan Penutup Lapisan dengan Evaluasi Mandiri Penyemprotan Pelapis Konstruksi”

2. Lihat berkasnya
standar ASTM

D16 Paints, terms related to coatings, materials and applications

Practice of preparing cold rolled steel plates for testing paints, pernis, conversion films and related coating products

D1005 Test method for dry film Thickness of organic coatings using a micrometer

D1729 Visual evaluation of diffuse reflection of opaque materials for color and chromatic aberration practice

Method for preparing D1730 coated aluminum and aluminum alloy surfaces

D2805 Test method for Covering power of coatings by reflection

D7091 Pengukuran tak rusak ketebalan film kering untuk lapisan non-magnetik untuk logam besi dan untuk lapisan non-magnetik, pelapis non-konduktif untuk logam besi

E691 Praktek melakukan penelitian antar laboratorium untuk mengetahui keakuratan metode pengujian