SAE AS5270A-2020螺栓、螺钉和螺柱，镍合金，UNS N07718工作强度，抗拉强度220 ksi采购规范.pdf

AEROSPACE AS5270 ™ REV. A STANDARD Issued 2013-09 Revised 2020-08 Superseding AS5270 (R) Bolts, Screws and Studs, Nickel Alloy, UNS N07718 Work-Strengthened, Tensile Strength 220 ksi Procurement Specification FSC 5306 RATIONALE Most paragraphs have been modified, AS6416 added. Paragraphs .2 and .3 added, all figures have been redrawn for clarity. 1. SCOPE 1.1 Type This procurement specification covers bolts, screws, and studs made from a work-strengthened corrosion and heat resistant, age hardenable nickel base alloy of the type identified under the Unified Numbering System as UNS N07718. The following properties are covered: 220 ksi minimum ultimate tensile strength at room temperature 180 ksi minimum ultimate tensile strength at 900 °F 114 ksi tension to 11.4 ksi tension fatigue at room temperature 1.2 Application Primarily for aerospace propulsion systems applications where a good combination of tensile strength, fatigue strength, resistance to relaxation, and shear strength is required for use up to approximately 900 °F. 1.3 Safety - Hazardous Materials While the materials