Home>ASTM Standards>ASTM B818-03(R2018) pdf free download

ASTM B818-03(R2018) pdf free download

ASTM B818-03(R2018) pdf free download.Standard Specification for Cobalt-Chromium-Nickel-Molybdenum-Tungsten Alloy (UNS R31233) Plate, Sheet and Strip
1. Scope
1.1 This specification covers cobalt-chromium-nickel- molybdenum-tungsten alloy UNS R31233 in the form ofrolled plate, sheet, and strip for wear applications and general corrosion service. 1.2 The following products are covered under this specifi- cation: 1.2.1 Sheet and Strip—Hot or cold rolled, annealed and descaled unless solution-annealing is performed in an atmo- sphere yielding a bright finish. 1.2.2 Plate—Hot rolled, solution-annealed, and descaled. 1.3 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. 1.4 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 become familiar with all hazards including those identified in the appropriate Safety Data Sheet (SDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability ofregulatory limitations prior to use. 1.5 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 Definitions ofTerms Specific to This Standard: 3.1.1 plate—material 3 ⁄ 16 in. (4.76 mm) and over in thick- ness. 3.1.2 sheet and strip—material under 3 ⁄ 16 in. (4.76 mm) in thickness.
4. General Requirements
4.1 Material furnished under this specification shall con- form to the applicable requirements of Specification B906 unless otherwise provided herein.
5. Ordering Information
5.1 It is the responsibility of the purchaser to specify all requirements that are necessary for material ordered under this specification. Examples of such requirements include, but are not limited to, the following: 5.1.1 Alloy. 5.1.2 Dimensions—Thickness (in decimals of an inch), width, and length (inch or fraction of an inch). 5.1.3 Certification—State if a report of test results is re- quired (see Specification B906, Section 21). 5.1.4 Optional Requirement—Plate; state how plate is to be cut (see Specification B906, Table A2.3). 5.1.5 Purchase Inspection—State which tests or inspections are to be witnessed (see Specification B906, Section 18). 5.1.6 Samples, for Product (Check) Analysis—State whether samples should be furnished (see Specification B906, Section 7.2.2).
6. Chemical Composition
6.1 The material shall conform to the requirements as to chemical composition prescribed in Table 1. 6.2 If a product (check) analysis is made by the purchaser, the material shall conform to the requirements specified in Table 1 and Specification B906.
8. Dimensions, Mass, and Permissible Variations
8.1 Thickness: 8.1.1 Sheet and Strip—The thickness shall be measured with the micrometer spindle 3 ⁄ 8 in. (9.525 mm) or more from any edge for material 1 in. (25.4 mm) or over in width and at any place on material under 1 in. in width. 8.2 Length: 8.2.1 Sheet and Strip—Sheet and strip may be ordered to cut lengths, in which case a variation of 1 ⁄ 8 in. (3.175 mm) over the specified length shall be permitted, with a “0” minus tolerance. 8.3 Straightness: 8.3.1 The edgewise curvature (depth of chord) of flat sheet, strip, and plate shall not exceed the product of 0.05 in. multiplied by the length in feet (0.04 mm multiplied by the length in centimetres). 8.3.2 Straightness for coiled strip is subject to agreement between the manufacturer and the purchaser. 8.4 Squareness (Sheet)—For sheets of all thicknesses and widths of6 in. (152.4 mm) or more, the angle between adjacent sides shall be 90 6 0.15° ( 1 ⁄ 16 in. in 24 in. or 2.6 mm/m). 8.5 Flatness—Plate, sheet, and strip shall be commercially flat. 8.6 Edges: 8.6.1 Plates shall have sheared, abrasive cut, or plasma torch-cut edges as specified. 8.6.2 Sheet and strip shall have sheared or slit edges.

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