ASTM A193/A193M-19 pdf free download.Standard Specification for Alloy-Steel and Stainless Steel Bolting for High Temperature or High Pressure Service and Other Special Purpose Applications.
This specification2 covers alloy and stainless steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications. See Specification A962/A962M for the definition of bolting. Bars and wire shall be hot-wrought and may be further processed by centerless grinding or by cold drawing. Austenitic stainless steel may be carbide solution treated or carbide solution treated and strain-hardened. When strain hardened austenitic stainless steel is ordered, the purchaser should take special care to ensure that Appendix X1 is thoroughly understood.
3. General Requirements and Ordering Information
3.1 The inquiry and orders shall include the following, as required. to describe the desired bolting material or bolting components adequately:
3.1.1 Heat-treated condition (that is carbide solution treated (Class I). carbide solution treated after finishing (Class I A), and carbide solution treated and strain-hardened (Classes 2. 2B and 2C), for the austenitic stainless steels; Classes I B and IC apply to the carbide solution-treated nitrogen-hearing stainless steels; Class I D applies to bolting material that is carbide solution treated by cooling rapidly from the rolling temperature),
3.1.2 Description of items required (that is. bars, bolts. screws, or studs).
3.1.3 Nuts, if required by purchaser. in accordance with
3.1.4 Supplementary requirements. if any. and
3.1 .5 Special requirements, in accordance with 6. 1 .5. 1,
6.2.6, 8.1. and 13.1.
3.2 coatings—Coatings are prohibited unless specified by the purchaser (See Supplementary Requirements SI 3 and S 14). When coated bolting components are ordered the purchaser should take special care to ensure that Appendix X2 is thoroughly understood.
4. Common Requirements
4. 1 Bolting materials and bolting components supplied to this specification shall conform to the requirements of Specification A962/A%2M. These requirements include test methods, finish, thread dimensions. macroetch (alloy steels only), marking, certification, optional supplementary requirements. and others. Failure to comply with the requirements of Specification A962/A962M constitutes nonconformance with this specification. In case of conhlicL between this specification and Specification A962/A962M. this specification shall prevail.ASTM A193/A193M-19 pdf free download.
5. Manufacture (Process)
5.1 Melting—See Specification A962/A962M for requ irements.
5.2 QutiIirv—Sec Specification A962/A962M for requirements.