ASTM D4549-15
- Standard Classification System and Basis for Specification for Polystyrene and Rubber-Modified Polystyrene Molding and Extrusion
- standard by ASTM International, 09/01/2015
- Category: ASTM
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1.1 This classification system covers polystyrene materials, both crystal and rubber modified, suitable for molding and extrusion.

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ASTM A490M-14a
Standard Specification for High-Strength Steel Bolts, Classes 10.9 and 10.9.3, for Structural Steel ..
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