Grade 4340 alloy steel rods resist fatigue and wear and maintain their shape at elevated temperatures. They are easy to weld and machine and are often manufactured into crankshafts, gear shafts, and other automotive and aircraft parts and components. Additional applications include hydraulic parts and machine tools.

Grade 8620 alloy steel rods and discs contain nickel for strength and ductility as well as chromium and molybdenum for increased abrasion and wear resistance properties. They have a high-case hardness and are often machined into gears, springs, hand tools, plates, and various machine parts and components. Grade 8620 is regarded as the most popular carburizing steel.

Grade 9310 alloy steel rods contain chromium, nickel, and molybdenum for increased strength, core hardness, and fatigue resistance. They are easy to machine and weld and are often manufactured into gears, crankshafts, and other parts under high stress in the automotive and aerospace industries.

Grade 4330 alloy steel rods are strong, easy to weld and machine, and resist impacts. They are often used for applications in automotive, aerospace, and gas and oil industries.