ASTM C59/C59M
Standard Specification for Gypsum Casting Plaster and Gypsum Molding Plaster
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About This Item
ASTM C59/C59M is the ASTM standard for gypsum casting plaster and gypsum molding plaster, providing a clear technical reference for these materials. It helps define the expected product framework for manufacturers, purchasers, and users who need consistent plaster performance in casting and molding applications. By aligning material requirements under a recognized specification, it supports more reliable comparison, procurement, and quality control. For anyone working with gypsum-based plaster products, ASTM C59/C59M offers an important basis for compliance and evaluation.
What is ASTM C59/C59M?
ASTM C59/C59M is the Standard Specification for Gypsum Casting Plaster and Gypsum Molding Plaster. As a product specification, it is intended to set technical expectations for these two related gypsum materials rather than describe a single end use. The standard is commonly used as a reference point for material identification, product consistency, and specification compliance. In practice, ASTM C59/C59M helps define the baseline against which gypsum casting plaster and gypsum molding plaster may be assessed.
Where is ASTM C59/C59M used?
This standard is used wherever gypsum casting plaster or gypsum molding plaster is selected, specified, or supplied for technical work. It is relevant in workflows that involve forming, casting, or molding with gypsum-based materials, especially when product consistency and documented specification are important. ASTM C59/C59M may be referenced by buyers, suppliers, and quality teams during product selection, receiving inspection, or internal material review. It is particularly useful when a project or procurement process needs a recognized standard for the plaster being purchased.
Why is ASTM C59/C59M important?
ASTM C59/C59M matters because it gives stakeholders a common standard for evaluating gypsum casting plaster and gypsum molding plaster. That helps reduce ambiguity in purchasing and specification, while supporting more consistent product expectations across suppliers and batches. In technical and commercial settings, having a recognized ASTM standard can simplify compliance checks, quality control, and product comparison. It also helps limit risk by making it easier to confirm that the material being supplied matches the intended plaster type.
- Gypsum casting plaster specification
- Gypsum molding plaster specification
- Material consistency reference
- Quality control and compliance support
- Procurement and product evaluation
- Publication Date: 2020-10-13
- Publisher: ASTM
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