D6AC VAC-ARC steel is a medium carbon, low alloy, ultra high strength steel primarily designed for high strength structural applications requiring strength leaves up to 280,000 psi. This alloy provides a high yield strength to tensile strength ratio, combined with good ductility. A tough and fibrous fracture is exhibited to as low as -210°F in impact testing; also the notch toughness is excellent. It has been selected for fracture toughness critical applications at a variety of strength levels. The deep hardening characteristics of D6AC steel make it applicable for fairly large sections. D6AC VAC-ARC steel is produced by the consumable electrode vacuum arc re-melting process to provide optimum cleanliness and preferred ingot structure, which in turn provide optimum transverse mechanical properties.
MasterSource offers a complete line of AQ D-6AC VAC MELT N&T inventory as noted below.