ASTM A193/A193M-14 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 specification covers alloy and stainless steel bolting 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 steel is ordered, the purchaser should take special care to ensure that Appendix X1 is thoroughly understood.
4. Common Requirements
4.1 Bolting supplied to this specification shall conform to the requirements of Specification A962/A962M. These requirements include test methods, finish, thread dimensions, macroctch (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 confilet between this specification and Specification A962/ A962M. this specification shall prevail.
6. Heat Treatment
6.1 Ferritic Steels:
6.1.1 Ferritic steels shall he allowed to cool to a temperature below the cooling transformation range immediately after rolling or forging. Materials shall then be uniformly reheated to the proper temperature to refine the grain (a group thus reheated being known as a quenching charge). quenched in a liquid medium under substantially uniform conditions for each quenching charge. and tempered. The minimum tempering temperature shall be as specified in Tables 2 and 3.