ASTM A 320 / A 320M - 17a Standard Specification for Alloy-Steel and Stainless Steel Bolting for Low-Temperature Service

Current edition approved May 1, 2017. Published May 2017.
This specification covers alloy steel bolting materials and bolting components for pressure vessels, valves, flanges, and fittings for low-temperature service. See Specification A962/A962M for the definition of bolting. The bars shall be hot-wrought and may be further processed by centerless grinding or by cold drawing. Austenitic stainless steel may be solution annealed or annealed 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.