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ASTM C660-24

Current Revision

Standard Practices for Production and Preparation of Gray Iron Castings for Porcelain Enameling

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1.1 These practices are intended to indicate certain casting characteristics and pre-enameling practices which will facilitate finishing by the wet- or dry-process methods of porcelain enameling. All of the listed recommendations are based on experiences with gray iron casting and enameling.

1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


These practices are intended for production and preparation of gray iron castings for porcelain enamelling. Design of the casting should be such as to minimize variations in temperature during firing and cooling. The governing factors in pattern layout and shop control are elimination of discontinuities, chill, and inclusions at or near the surfaces to be coated. Visual inspection methods for enamelling surfaces should place emphasis on the detection and remedy of porosity, sand inclusions, and gas holes. Porosity consisting of essentially subsurface pinholes, shallow covered blows, body scars, or shrinkage near the surface may or may not be acceptable for correction, depending upon severity.


4.1 This practice is specifically intended to establish proper manufacture and surface preparation of gray iron castings for successful application of porcelain enamel.

4.2 Casting composition and proper removal of contaminants is essential for quality application of finished porcelain enamel.

SDO ASTM: ASTM International
Document Number C660
Publication Date Nov. 1, 2024
Language en - English
Page Count 3
Revision Level 24
Supercedes
Committee B08.12
Publish Date Document Id Type View
Nov. 1, 2024 C0660-24 Revision
Nov. 1, 2020 C0660-81R20 Reaffirmation
May 1, 2015 C0660-81R15 Reaffirmation
April 1, 2010 C0660-81R10 Reaffirmation
Sept. 15, 2005 C0660-81R05 Reaffirmation
March 10, 1999 C0660-81R99 Reaffirmation