4340 Var Bar, AMS 6414

Rockwell Industries 4340 steel round bar is an aerospace quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock. 4340 VAR bar steel supplied by Rockwell Industries has been typically used for parts requiring through-hardening capability up to 3.5 inches (89 mm) in nominal thickness and subject to rigid magnetic particle inspection standards, however, usage is not limited to such applications. Rockwell Industries International’s supply of 4340 VAR (Vacuum Arc Re-melt) steel AMS 6414 is heat treated to 260 to 280 ksi (pounds per square inch ×1000) as a baseline. This combination of alloy and heat treat level has been used for many years in the aerospace industry due to its response to exposure of a wide variety of maintenance chemicals and electroplated coatings. Testing has shown that Rockwell Industries VAR 4340 steel may be used as an alternative to the air melted steel with no loss in sensitivity. The standard specifications for 4340 VAR round bar at Rockwell Industries: AMS 6414 and AMS 6415.

Rockwell Industries stocks Inconel 718, Custom 465, 17-4PH, 17-7PH, AM-355, 418 Greek Ascoloy, 9310 VAR, 4340 VAR, Pyrowear 53, CBS-50 NiL, Aermet 100, Nitriding 135, Hy-Tuf VAR.