Overview
Product Details
AISI4145 APPLICATIONS: This is a direct hardening chromium-molybdenum low alloy steel that may be readily forged, machined and welded. It may be heat treated to a wide range of strength and ductility levels. This alloy is used in the oil and gas industry as forged down-hole drilling tools such as drill collars. Other applications are forged gears, shafts for hydraulic presses, rolls for paper mills, pump shafts and tool holders. Chemical composition: AISI 4145 C Si Mn P S Cr Mo min. 0.43 0.10 0.85 0.80 0.15 max. 0.49 0.35 1.10 0.035 0.040 1.10 0.25 MACHINABILITY Best machinability in this alloy is obtained from a structure that runs from coarse lamellar pearlite to coarse spheroidite. Heat treatment providers should be consulted for the best treatment required to obtain these structures, always bearing in mind the complexity and section size of the parts to be machined. WELDABILITY The grade may be welded by fusion or resistance methods, but preheating and post-weld stress relief are recommended. The grade should not be welded in the hardened and tempered condition. Production: Round and Flat Size according to customer's requirement.