ASME NM.3.1-2020 pdf download

ASME NM.3.1-2020 pdf download.Nonmetallic Materials Part 1 — Thermoplastic Material Specifications.
1.1 This specification covers rigid PVC and CPVC com- pounds intended for general purpose use in extruded or molded form—including pressure piping applications and nonpressure piping applications—composed of poly(vinyl chloride), chlo- rinated poly(vinyl chloride), or vinyl chloride copolymers containing at least 80 % vinyl chloride, and the necessary compounding ingredients. The compounding ingredients shall be permitted to consist oflubricants, stabilizers, non-poly(vinyl chloride) resin modifiers, pigments, and inorganic fillers. N OTE 1—Selection of specific compounds for particular end uses or applications requires consideration ofother characteristics such as thermal properties, optical properties, weather resistance, etc. Specific require- ments and test methods for these properties should be by mutual agreement between the purchaser and the seller. N OTE 2—Selection of compounds for pressure piping applications requires consideration of material stress ratings that are required for determining pressure ratings, but are not addressed in this specification. Requirements for long-term material stress ratings in accordance with recognized stress rating standards, such as HDB in accordance with Test Method D2837 for pressure piping, should be included in specifications for pressure piping products or systems. N OTE 3—The list of compounding ingredients in 1.1 is not meant to be an exhaustive list of allowable compound ingredients.
In addition to the compounding ingredients listed, others may also be used. The list of compounding ingredients in 1.1 does not imply that every ingredient listed is a required ingredient. Some compounds may not contain all the ingredients listed in 1.1. 1.2 For applications involving special chemical resistance see Classification D5260. 1.3 The requirements in this specification are intended for the quality control of compounds used to manufacture finished products. These properties are based on data obtained using standard test specimens tested under6.1 Materials supplied under this specification shall be PVC and CPVC compounds in the form of cubes, granules, free- flowing powder blends, or compacted powder blends. 6.2 Materials shall be of uniform composition and size and shall be free offoreign matter to such level ofcontamination as may be agreed upon between the purchaser and the seller. 6.3 Color and transparency or opacity of molded or ex- truded articles formed under the conditions recommended by the seller shall be comparable within commercial match tolerances to the color and transparency or opacity of standard molded or extruded samples of the same thickness supplied in advance by the seller of the material. 7. Physical Requirements 7.1 Test values for specimens of the material prepared as specified in Section 9 and tested in accordance with Section 10 shall conform to the requirements given in Table 1 for the class selected. 8. Sampling 8.1 A batch or lot shall be considered as a unit of manufac- ture and may consist ofa blend oftwo or more production runs of material. 8.2 Sample using a statistically acceptable procedure. 9. Conformance Testing 9.1 The minimum properties identified by the class desig- nations in Table 1 specified in the purchase order (see 5.1) shall be verified by the tests described in Section 11. 9.2 Conformance with this specification shall be determined with one set of test results. If there are multiple test results, the average value for all test samples shall be used to determine conformance. 9.3 If the average test value produces values below the minimum property values of the Class designation in Table 1, the material does not conform to this specification.14.2 Marking—Unless otherwise agreed upon between the purchaser and the seller, shipping containers shall be marked with the name of the material and the name of the manufac- turer; class, batch, or lot number; quantity contained therein, as defined by the contract or order under which shipment is made; the name of the seller; and the number of the contract or order. 14.3 All packing, packaging, and marking provisions of Practice D3892 shall apply to this specification.