REPUBLIC RSM 250 is an 18% nickel-cobalt-molybdenum age-hardening steel designed to develop 250,000 psi yield strength with good toughness. It is recommended where a combination of strength, toughness and notch resistance is required such as aircraft landing gears and jet engine components. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive strength as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-250. Producer or source: Republic Steel Corporation, Titanium Division.

A-L 18NiCoMo(250) is a high nickel martensitic steel which is strengthened by precipitation hardening. It has excellent combination of strength and toughness particularly in the presence of notches and cracks. It is recommended for applications such as solid fuel rocket cases and aircraft landing gear. 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: SA-137. Producer or source: Allegheny Ludlum Corporation.

ALMAR 25 is a maraging alloy steel having an excellent combination of strength and toughness particularly in the presence of notches or cracks. It is recommended for applications such as fuel rocket cases and aircraft landing gears. This datasheet provides information on composition, physical properties, and elasticity. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-154. Producer or source: Allegheny Ludlum Corporation.

ALMAR 18 is a high-nickel martensitic steel which is strengthened by precipitation hardening. It has excellent combination of strength and toughness particularly in the presence of notches or cracks. It is recommended for applications such as solid fuel rocket cases and aircraft landing gears. It is supplied in three different compositions to produce yield strengths from 200,000 to 280,000 psi. 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 temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-156. Producer or source: Allegheny Ludlum Corporation.

ALMAR 20 is a high nickel martensitic steel which is strengthened by precipitation hardening. It has excellent combination of strength and toughness particularly in the presence of notches and cracks. It is recommended for applications such as solid fuel rocket cases and aircraft landing gear. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-162. Producer or source: Allegheny Ludlum Corporation.

Ferrium S53 was developed for use as a structural stainless steel for aircraft landing gear. S53 has a corrosion resistance equivalent to 15-5PH H900, strength equivalent to or better than 300M (AMS 6257A) and SAE 4340 (see Mechanical Properties), optimum microstructure features for maximum fatigue resistance, and a surface hardenability equal to or greater than 67 HRC for wear and fatigue. Please see updated designation and information on this alloy in Alloy Digest SA-589, December 2008. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and machining. Filing Code: SS-942. Producer or source: QuesTek Innovations, LLC. Originally published October 2005, revised June 2008, updated December 2008.

Ferrium S53 was developed for use as a structural corrosion resistant steel for aircraft landing gear. S53 has a corrosion resistance equivalent to 440C, strength equivalent to or better than 300M (AMS 6257A) and SAE 4340 (see Mechanical Properties), optimum microstructure features for maximum fatigue resistance, and a surface hardenability equal to or greater than 67 HRC for wear and fatigue. This datasheet is an update to Alloy Digest SS-942 and SS-1003. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as heat treating and machining. Filing Code: SA-589. Producer or source: QuesTek Innovations, LLC.

G.110 is an 18% nickel alloy steel, possessing an excellent combination of toughness and ductility at yield strength levels of 250,000 psi. The strength developed is independent of mass effect and rate of cooling, and is achieved by a simple aging treatment. The alloy is recommended for applications such as rocket motor cases and accessories, bolts and fasteners and aircraft structural components- particularly landing gear. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, joining, and surface treatment. Filing Code: SA-225. Producer or source: Jessop-Saville Ltd, Brightside Works.

Lescalloy Hy-Tuf Vac-Arc is vacuum arc remelted. This high-strength steel is used for landing gear, flap tracks, and structural applications. This datasheet provides information on composition, physical properties, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-499. Producer or source: Latrobe Steel Company.

Nicomet 1 is a copper-nickel-tin alloy that has high strength because of spinodal decomposition in heat treatment. The alloy could replace aluminum and manganese bronzes. A typical application utilizes both the good antifriction and high strength properties. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on wear resistance as well as heat treating. Filing Code: CU-652. Producer or source: Anchor Bronze & Metals, Inc.

Nicomet 2 is a copper-nickel-tin alloy that has high strength because of spinodal decomposition. The alloy has good antifriction properties. Nicomet 2 could replace some beryllium-copper alloys. An example application for the alloy is a sleeve bearing. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on wear resistance as well as heat treating. Filing Code: CU-653. Producer or source: Anchor Bronze & Metals, Inc.

Tricent is an alloy steel offering a combination of hardenability, ductility and toughness at tensile strengths up to 300,000 psi. It is recommended for aircraft components, pressure vessels, fasteners, gears, etc. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-193. Producer or source: Midvale-Heppenstall Company.

Nibron Special is an extra high-strength nickel bronze that is corrosion resistant in both marine environments and industrial media. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as machining and joining. Filing Code: Cu-844. Producer or source: Columbia Metals Ltd.

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 300M-HS VAC-ARC is a clean high-strength, low-alloy steel with high strength, fracture toughness, and hardenability. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-722. Producer or source: Latrobe Specialty Steel Company.

SPS Technologies Aerex 350 is a proprietary high-strength, corrosion-resistant nickel-based superalloy that is suitable for demanding applications up to 730 °C (1350 °F). It has the highest temperature limit of the three SPS superalloys. Like MP35N and MP159, this alloy not only undergoes the multiphase reaction, but also benefits from two additional strengthening mechanisms. Elements are also added to the chemical composition to cause precipitation of the gamma prime phase with higher temperature capability than MP159. Because this alloy is used at even higher temperatures than MP159, elements are added to the chemical composition to also cause the precipitation of eta phase during thermal treatments. This phase contributes to notch toughness at elevated temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance. Filing Code: Ni-780. Producer or source: SPS Technologies, Inc.

VASCOJET 1000 is a 5% chromium steel designed for parts requiring maximum levels of strength, ductility, toughness, fatigue resistance and thermal stability for operation between -100 F and 1000 F. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-62. Producer or source: Vanadium-Alloys Steel Company.

Ferrovac-4340 is a vacuum melted chromium, nickel, molybdenum alloy steel having high endurance limit, high notched tensile strength, and high transverse ductility. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-68. Producer or source: Vacuum Metals Corporation.

Republic RSM-200 is a high strength, tough maraging steel recommended for airframe and missile systems. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-209. Producer or source: Republic Steel Corporation.

Vascojet 1000-5 Temper is an ultra high-strength steel designed for applications requiring between 300,000 and 325,000 psi ultimate tensile strength, and 260,000-270,000 psi yield strength, with good fatigue and impact properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on low and high temperature performance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-109. Producer or source: Vanadium-Alloys Steel Company.