ASTM B882-10(R2018) pdf free download

ASTM B882-10(R2018) pdf free download.Standard Speci fication for Pre-Patinated Copper for Architectural Applications
1. Scope
1.1 This specification covers the establishment of the re- quirements for pre-patinated (artificially aged) copper sheet and strip in ounce-weight thicknesses supplied in flat lengths for roofing, flashing, and other architectural applications. 1.2 The pre-patinated surface is the result of chemical reaction with the copper and shall be applied on one side of the product. 1.2.1 The pre-patinated surface formed is comparable in color and ability to be bent or formed to the surface formed in naturally occurring patinated copper. 1.3 The pre-patinated surface is not the result of coating applications such as painting. 1.4 Materials made to this specification are not intended to be used for electrical applications. 1.5 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. N OTE 1—A companion specification for copper sheet and strip for building construction is Specification B370. 1.6 The following precautionary statement pertains only to the test method portion, Section 12, of this specification: 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. 1.7 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
7. Chemical Composition
7.1 The copper sheet shall have a minimum copper content of 99.5 % (including silver) as prescribed in Specification B370. 7.1.1 Any copper that complies with 7.1 shall be acceptable. 7.2 When limits for unnamed elements are required, those limits shall be established, and the concentration of such elements determined by agreement between the manufacturer and the purchaser. 7.3 The artificial patina is composed of metallic salts which are also found in naturally occurring patinas.
8. Temper
8.1 The nonpatinated base copper sheet, referred to in 6.1 of this specification, is commercially available in the following tempers as defined by Classification B601: H00 (eighth hard, cold-rolled)，H01 (quarter hard, cold-rolled high yield)， and H02 (half hard) temper. 8.1.1 Unless otherwise specified, the product is normally supplied in the H0O (eighth hard, cold-rolled) temper.
9. Mechanical Properties
9.1 Tensile Strength: 9.1.1 The nonpatinated base copper sheet material shall conform to the requirements of Table 2, for the temper specified in the purchase order, when tested in accordance with Test Methods E8/E8M. 9.1.2 The tension test results shall be the basis for purchaser acceptance or rejection based upon mechanical properties. 9.2 Rockwell Hardness: 9.2.1 Since Rockwell hardness tests offer a quick and convenient method of checking the conformity of the product to the requirements of tensile strength, approximate Rockwell hardness values are given in Table 2 for general information and assistance in testing. 9.2.1.1 The hardness testing must be performed on a non- patinated surface, and the values obtained shall not be used as a basis for rejection.
10. Dimensions, Mass, and Permissible Variations
10.1 Thickness: 10.1.1 The standard method of measuring the thickness of the nonpatinated base sheet shall be by ounce-weight. 10.1.1.1 The corresponding theoretical thickness in inches for the standard ounce-weights is shown in Table 1. 10.1.2 The minimum and maximum thickness permitted at any point on the nonpatinated base sheet shall be as specified in Table 1. 10.1.2.1 The thickness of the patinated product shall not be less than the thickness of the base copper sheet. 10.2 Width: 10.2.1 The width tolerance for slit metal shall be as shown in Table 3. 10.2.2 The width tolerances for square-sheared metal shall be as shown in Table 4.