標準號：SAE AMS 6257E-2011
中文標準名稱：自耗電*真空重熔的1.6Si 0.82Cr 1.8Ni 0.40Mo 0.08V(0.40-0.44C) 正火和回火鋼制條材,鍛件和管材
英文標準名稱：Steel Bars, Forgings, and Tubing 1.6Si 0.82Cr 1.8Ni 0.40Mo 0.08V (0.40-0.44C) Consumable Electrode Vacuum Remelted Normalized and Tempered
標準類型：V11
發布日期：2011/5/25 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：V11
國際標準分類號：49.025.10
引用標準：ASTM A 370-2010;ASTM A 370-2011;ASTM A 604-1993;ASTM E 45-2010;ASTM E 45-2011;ASTM E 112-2010;ASTM E 350-1995;ASTM E 384-2010;ASTM E 384-2011;SAE AMS-H-6875-1998;SAE AMS 2251;SAE AMS 2253;SAE AMS 2259;SAE AMS 2300;SAE AMS 2310;SAE AMS 2370;SAE AMS 2372;SA
適用范圍：This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock. These products have been used typically for parts under 3.5 inches (89 mm) in thickness requiring a through-hardening steel capable of developing a minimum hardness of 52 HRC, the parts being subject to very rigid magnetic particle inspection standards, but usage is not limited to such applications. Certain design and processing procedures may cause these products to become susceptible to stress-corrosion cracking after heat treatment; ARP1110 recommends practices to minimize such occurrences.