ASTM B432-2019 pdf free download

ASTM B432-2019 pdf free download.Standard Specification for Copper and Copper Alloy Clad Steel Plate
1. Scope
1.1 This specification establishes the requirements for plate of a carbon steel or low-alloy steel base to which is integrally and continuously bonded on one or both sides a layer of copper or copper-base alloy. The material is generally intended for pressure vessel use but may be used in other structural applications where corrosion resistance or conductivity of the alloy is of prime importance. 1.2 Units- -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 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.
3. Terminology
3.1 For definitions of terms related to copper and copper alloys, refer to Terminology B846. 3.2 Definitions of Terms Specific to This Standard: 3.2.1 base metal (backing steel), n- component to which the cladding metal is applied, usually the greater percentage of the composite plate and usually consisting of carbon or low-alloy steel. . 3.2.2 blind flange, n- same as a cover. 3.2.3 bonding, n- adhesion of one surface to another with- out the use of an adhesive as a bonding agent. 3.2.4 cladding metal, n- -the copper or copper-base alloy component of the composite plate. 3.2.5 cover, n- a component with similar features to a tubesheet which is used as a closure and which typically requires surface machining over part of the face while main- taining minimum specified minimum thickness. 3.2.6 double-clad, adj- material is considered as double- clad when both sides of the steel base metal are covered with copper cladding. 3.2.7 interface, n- of the clad product, is that region of the thickness in which the product transitions from essentially 100 % base metal to 100 % cladding metal, also referred to as the bond or bondzone. 3.2.8 integrally and continuously bonded- a condition in which the cladding metal and base metal are brought together to form a metallurgical bond at essentially the entire interface of the two metals by means other than those processes that do not produce a homogeneous composite plate. 3.2.9 plate, n- the term plate as used in this specification applies to material 0.188 in. (4.78 mm) and over in thickness, and over 10 in. (254 mm) in width. 3.2.10 single-clad, adj- material is considered as single- clad when only one side of the steel base metal is covered with copper cladding. 3.2.11 tubesheet, n一the term tubesheet as used in this specification applies to a clad plate, which is used in a heat . exchanger to separate the tubeside and shell side components. Typically, but not necessarily, tubesheets are round, relatively thick, and require that the cladding and/or base be machined flat over part or all of the face while maintaining specified minimum thicknesses.
4. Ordering Information
4.1 Include the following specified choices when placing orders for product under this specification, as applicable: 4.1.1 ASTM designation and year of issue; 4.1.2 Dimensions, including the thickness of the cladding alloy and the backing steel, or of the total composite plate, and if more or less restrictive thickness tolerances apply; 4.1.3 Quantity- -total weight or number of pieces of each size; 4.1.4 Cladding metal specification (see Section 6); 4.1.5 Base metal specification (see Section 6); 4.1.6 Advise if the part is to be used as a tubesheet, cover, or blind flange; 4.1.7 Restrictions, if required, on repair by welding (see Section 11).