HP 9-4-20 is a low-alloy, high strength steel with a content of high nickel and cobalt to retain toughness. This alloy has good hardenability and weldability and very high fracture toughness. For HP 9-4-20 to keep its cleanliness, this is produced bu the consumable electrode vacuum arc remelting process.

has a Yield Strength of 200-205 KSI but can get brought up to 235KSI.

Specifications:

UNS K91461 (wire), K91472 (plate, sheet, strip, bar, forging, ring, tubing), AMS 6468, AMS 6523, AMS 6525, AMS A646,

Also known as Lescalloy

Applications: