40HNMA, 40NiCrMo7, AISI 4340 - Destination and specification. Structural alloy steel with very good strength properties and particularly high hardening properties, used for thermal improvement on highly stressed machine parts exposed to impact, twisting and vibration, where suitable impact strength is 4340 AISI 4340 SAE 4340 Alloy Steel - SAE AISI 1010 1015 4340 - Highly alloyed steel, nominally 1.8% Ni, .80% chromium and .25% molybdenum. High strength characteristics. Used for heavily stressed parts operating in fatigue and other duty conditions. AISI 4340 has a favorable response to heat treatment usually oil quenching followed by tempering and exhibits a good combination of ductility and strength when treated thusly.
4340 Alloy Steel (UNS G434000), a heat treatable low alloy steel with chromium and molybdenum content, is a suitable material for heat-treated conditions.The 4340 round bar exhibits excellent resistance to fatigue. This alloy steel is typically known for its ability to obtain a high level of strength and toughness in the heat-treated conditions. . Though being heat-treated, the steel rod can 4340 steel mechanical properties and applicationsMar 06, 2017 · AISI 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. AISI 4340 steel round bar will surely meet your budget and specifications. AIS 4340 Low Alloy SteelA low alloy steel containing chromium, nickel and molybdenum, AISI 4340 demonstrates extraordinary toughness and strength in the heat-treated condition. With high ductility, it can be bent or formed by pressing or spinning in the annealed state. AISI 4340 is often used in power transmission gears and shafts along with other structural parts.
AISI 4140 Alloy steel is a versatile chromium-molybdenum alloy steel that can be heat treated and hardened offering impressive toughness. AISI 4340 Alloy Steel (UNS G43400) - AZoMSep 07, 2012 · Alloy steels are designated by AISI four-digit numbers. They comprise different kinds of steels having composition exceeding the limitations of B, C, Mn, Mo, Ni, Si, Cr, and Va set for carbon steels. AISI 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel AISI 4340 Alloy Steel-SAE UNS G43400 steel - OTAI Special ASTM 4340 steel is a alloy structural steel, 4340 is used for engineering structural, Used as require good toughness, high strength, as well as the important conditioning of large size, heavy machinery such as high load of axial, turbine shaft, larger than 250 mm in diameter of helicopter rotor shaft, turbojet engine turbine shaft, blade, high load of transmission parts, fasteners of the crankshaft.
Note:Continuous cooling diagram for 4340 steel, United States Steel Corporation, 1948. The colored circles refer to transformations that are discussed in the text. Reference:F. Peter Ford and Peter M. Scott, Environmentally-Assisted Degradation of Carbon and Low-Alloy Steels in Water Cooled Nuclear Reactors, Advanced Nuclear Technology AISI-4340 - Ju Feng Special Steel Co., Ltd.Alloy Steel Equivalent Grades:GB 40CrNiMoA, 45CrNiMoVA, JIS SNCM439, and ASTM 4340, 9840. SNCM439 is a kind of refining steel and has the properties of high hardness and toughness. It is often used for the manufacture of screws, gears, shafts, nuts, pistons, the automobile parts required high toughness and so on. AISI/SAE 4340 datasheet,AISI/SAE 4340 chemical,AISI/SAE Technical specification of SAE/AISI/UNS system standard alloy structural steel AISI 4340 data sheet, SAE 4340 Chemical compositions, AISI 4340 Mechanical properties from Steelmaking, ESR melted, Blooming, Hot forging,Hot rolling,Heat treatment, Straightening, 100% Ultrasonic test, Cold working, Peeled or rough turned machining.
AISI 4340 nickel-chromium-molybdenum alloy steel is a kind of high strength low alloy steel with deep hardenability. By proper heat treatment a combination of high ductility, high toughness and high tensile, fatigue and creep strengths could be obtained. This steel is widely available as billet, bar, rod, forgings, sheet, tubing, and welding Structural surface characterization of ion nitrided AISI Apr 01, 2012 · The material used in this study was CrMoNi low alloy AISI 4340 steel and the chemical composition of the steel was given in Table 1.AISI 4340 steel was received in hot-rolled condition and austenitized at 840 °C for 30 min, quenched in oil and then tempered at 600 °C for 1 h.The core hardness of AISI 4340 steel was obtained 315 HV 0.2.Disc specimens about 20 mm in diameter and 15 mm AISI 4340 Alloy Steel - Waldun SteelAISI4340 Alloy steel is a general nickel-molybdenum alloy steel as per American standard which has high strength,toughness and excellent hardenability. AISI4340 is usually supplied under quenched and tempered condition at the hardness of 24 29HRc.