标准摘要
This specification covers a special aircraft-quality, low-alloy steel in the form of bars.Cross Reference: AMS2251,AMS2259,AMS2304,AMS2370,AMS2806,AS1182,ASTMA255,ASTME112,ASTME18,ASTME350,ASTME381,ASTME384
英文名称Steel, Bars 0.95Cr - 0.20Mo (0.38 - 0.43C) (SAE 4140) Special Aircraft-Quality Cleanliness Normalized