ISO 4532:1991 Vitreous and Porcelain Enamels—Industry Application and Significance

ISO 4532:1991 helps manufacturers test how well vitreous and porcelain enamel coatings can withstand sudden impact damage through a controlled pistol test method. This test evaluates the mechanical strength of enamelled surfaces by firing a standardized projectile at the coated article to determine whether the enamel cracks, chips, or remains intact under impact stress. You…