標準號：SAE AMS 6323L-2012
中文標準名稱：0.50Cr 0.55Ni 0.25Mo(0.38-0.43C)機械鋼管(SAE 8740)
英文標準名稱：Steel, Mechanical Tubing 0.50Cr 0.55Ni 0.25Mo (0.38-0.43C) (SAE 8740)
標準類型：V21
發布日期：2012/9/27 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：V21
國際標準分類號：49.025.10
引用標準：ASTM A 255-2010;ASTM E 18-2011;ASTM E 112-2010;ASTM E 350-1995;ASTM E 381-2001;ASTM E 384-2011;SAE AMS 2253;SAE AMS 2259;SAE AMS 2301K-2010;SAE AMS 2370;SAE AMS 2806;SAE AS 1182
適用范圍：This specification covers an aircraft-quality, low-alloy steel in the form of mechanical tubing. This tubing has been used typically for parts, 0.375 inch (9.52 mm) and under in section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 50 HRC when hardened and tempered and also parts of greater thickness but requiring proportionately lower hardness, but usage is not limited to such applications.