ASTM C283-13 (2021) PDF

Full title and description

ASTM C283 − 13 (Reapproved 2021) — Standard Test Methods for Resistance of Porcelain Enameled Utensils to Boiling Acid. Specifies laboratory and production test procedures (Test Method A and Test Method B) for assessing the resistance of porcelain/vitreous enamel coatings on utensils to attack by boiling food acids (commonly citric acid).

Abstract

This standard defines two complementary test methods to evaluate the boiling-acid resistance of porcelain enamel coatings used on utensils: Test Method A for production-line quality control of finished utensils and Test Method B for laboratory evaluation of enamel formulations. It covers specimen preparation, apparatus, reagent composition, test procedure (boiling citric-acid solution), and reporting of results for grading and quality-assurance purposes.

General information

• Status: Active (reapproved 2021)
• Publication date: Designation C283 − 13 (original revision 2013); current edition reapproved October 1, 2021 (published late 2021). Originally approved 1951.
• Publisher: ASTM International (ASTM)
• ICS / categories: 25.220.50 (Enamels / vitreous enamel)
• Edition / version: ASTM C283 − 13 (Reapproved 2021)
• Number of pages: 4

Scope

Specifies procedures to determine the resistance of porcelain enamel coatings on utensils to attack by boiling acid. Covers both a production test (A) for finished utensils and a laboratory method (B) for enamel materials; states units (inch‑pound standard with SI conversions provided) and notes safety/responsibility considerations for users.

Key topics and requirements

• Two test methods: Test Method A (production-line quality control) and Test Method B (laboratory evaluation of enamel coatings).
• Specimen preparation and sampling from utensil bottoms (cutting, edge filing, cleaning, drying).
• Required apparatus, including boiling-acid resistance apparatus and hotplate capable of maintaining a rolling boil.
• Reagent composition and preparation (standard citric-acid solution specified by mass ratio).
• Step-by-step test procedure: exposure under rolling boil, timing, post-test conditioning and evaluation.
• Evaluation and reporting requirements (observed damage, grading/acceptance criteria, mass/visual assessments as applicable).
• Health, safety and environmental notes; user responsibility for safe practices and regulatory applicability.

Typical use and users

Used by manufacturers of porcelain-enameled utensils and cookware, enamel suppliers and formulators, independent testing and quality-control laboratories, product inspectors, and standards/regulatory bodies to verify coating resistance to food acids and to support product acceptance criteria and R&D comparisons.

Related standards

Standards commonly referenced alongside or relevant to porcelain enamel testing and coatings include other ASTM test methods and practices for enamel properties and coating adherence (for example, ASTM standards addressing enamel adherence, gloss, color retention and related coating tests), as well as historical/commercial specifications for enameled utensils. Commercial Standard CS100-47 is referenced historically for enameled utensil practice.

Keywords

porcelain enamel; vitreous enamel; boiling acid resistance; citric acid; utensil coatings; acid resistance test; ASTM C283; quality control; test method A; test method B.

FAQ

Q: What is this standard?

A: ASTM C283 defines standardized test methods for evaluating the resistance of porcelain‑enameled utensils to attack by boiling food acids (chiefly citric acid).

Q: What does it cover?

A: It covers specimen selection and preparation, required apparatus and reagents, stepwise test procedures for two methods (production QC and laboratory evaluation), and criteria for evaluating and reporting results.

Q: Who typically uses it?

A: Enamel and cookware manufacturers, enamel formulators, independent test labs, quality engineers, and product compliance personnel.

Q: Is it current or superseded?

A: The designation is ASTM C283 − 13 and it was reapproved in 2021 (edition shown as C283-13 (Reapproved 2021)). A revision work item for a subsequent update may be in progress; users should confirm the active status with ASTM International for the very latest status before relying on the standard for compliance or procurement.

Q: Is it part of a series?

A: It belongs to ASTM Committee B08 (Metallic and Inorganic Coatings) and subcommittee B08.12 (Materials for Porcelain Enamel and Ceramic‑Metal Systems). It is one of several ASTM standards addressing porcelain enamel and coating tests used together to characterize enamel properties and performance.

Q: What are the key keywords?

A: porcelain enamel, vitreous enamel, boiling acid resistance, citric acid, utensil coating, acid resistance test, ASTM C283, quality control.