LESCALLOY 15-5 VAC-ARC is a precipitation hardening martensitic stainless steel with minimal delta ferrite. Vacuum arc remelting in the production of the alloy provides a low gas content, clean steel with optimum transverse properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-522. Producer or source: Latrobe Steel Company.

Lescalloy 17-4 Vac-Arc is special melt version of a well-known precipitation-hardening martensitic stainless steel. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-1040. Producer or source: Latrobe Specialty Steel Company.

LESCALLOY 4330 + V VAC-ARC steel is a vanadium modified 4330 having improved hardenability and mechanical properties. It is produced by consumable electrode vacuum are remelting providing optimum cleanliness and preferred ingot structure. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-314. Producer or source: Latrobe Steel Company. Originally published May 1975, revised March 1992.

LESCALLOY 300M VAC ARC is a low-alloy steel with an excellent combination of high hardenability and high strength coupled with good ductility and good toughness. Its tensile strength ranges from 280,000 to 300,000 psi. It is produced by the vacuum consumable electrode melting process to provide optimum cleanliness and preferred ingot structure. Its applications include aircraft components, pressure vessels and fasteners. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-321. Producer or source: Latrobe Steel Company. Originally published March 1976, revised February 1993.

LESCALLOY 4340 VAC-ARC is a low-alloy steel that can be heat treated to high strength levels. It has a good combination of strength, ductility and toughness along with high hardenability. It is produced by the vacuum-consumable-electrode process to provide optimum cleanliness and preferred ingot structure. It is used for aircraft components including retainer rings for critical bearings and other heavy-duty applications. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-361. Producer or source: Latrobe Steel Company.

LESCALLOY 718 VacArc is a precipitation hardening nickel-base super alloy designed for service at elevated temperatures up to 1300 F where high strength coupled with good ductility and corrosion resistance are required. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on low and high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: Ni-102. Producer or source: Latrobe Steel Company.