... 5) MOQ : 20MT 50Mn2 ASTM 1052 Alloy Structural Steel 1. Grade: AISI 1052 ,ASTM 1052 , 50Mn2 2. Specification: ... ,NAK80) 4. Carbon Structural Steel:1018,1045/S45C,1050/S50C,20Mn,40Mn. 5. Carbon Tool Steel:T7,T8,T10, ... With strong technical force, better reliability, high quality, competitive price, fast leading time and excellent ...