Astm D61821 Pdf |best| Jun 2026

: To assess the resistance of finished leather to cracking, delamination (peeling), and discoloration .

In cases of dispute or higher precision needs, tolerances may be narrowed to Common Conditioning Procedures astm d61821 pdf

ASTM D618 outlines the standard practices for conditioning plastics for testing. Why is this necessary? Plastic materials are hygroscopic (they absorb moisture from the air) and sensitive to temperature. A nylon part tested at 20% relative humidity (RH) will yield vastly different mechanical strength results than the same part tested at 80% RH. : To assess the resistance of finished leather