AISI 4340 steel is a medium carbon, low alloy steel. Otai steel is one leading supplier of 4340 steel & equivalents:36CrNiMo4, 1.6511, EN24, SNCM439 etc. AISI E4340 Alloy Steel (UNS G43406) - AZoMThe thermal properties of AISI E4340 alloy steel are given in the following table. Properties. Metric. Imperial. Thermal expansion co-efficient (austenitized 870°C (1600°F), 545°C (1010°F) temper for 2 hrs/@ -70-20°C/-94- 68°F) 11.3 µm/m°C. 6.28 µin/in°F. Thermal conductivity (typical steel) 44.5 W/mK.
Hardening AISI 4340 alloy steel can be hardened by cold working or heat treatment. Applications AISI 4340 alloy steel is mainly used in power transmission gears and shafts, aircraft landing gear, and other structural parts. AISI 4340 Alloy Steel (UNS G43400) Saved from URL:P /4 4 Aircraft Alloy Steel AISI 4340 / E-4340 - Aircraft MaterialsTechnical Data Sheet Alloy E 4340 is a widely used deep-hardening constructional steel. Due to E-4340's high alloy content it obtains a uniformed hardness by heat treatment. The high fatigue strength makes E4340 ideal for highly stress parts as it maintains it's strength and hardness at elevated temperatures. Encore Metals - 4340AISI 4340 is stocked in the heat treated and stress-relieved condition at approximately 150,000 psi (1034 N/mm2) and in the annealed condition at HB 235 max. Typical Applications. High strength machine parts, heavy-duty shafting, high tensile bolts and studs, gears, axle shafts, crankshafts, boring bars and down-hole drilling components.
Jun 02, 2021 · AISI 4140 is high-strength medium carbon steel. 4140 can be easily welded with the right precautionary steps being applied. Other steels in this category as AISI 4130 and 4340 follow the same welding advice. This article provides a detailed introduction to the AISI 4140 materials, their properties, welding, and PWHT requirements. SAE-AISI 1045 Steel vs. SAE-AISI 4340 Steel ::MakeItFromMay 30, 2020 · Both SAE-AISI 1045 steel and SAE-AISI 4340 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown. For each property being compared, the top bar is SAE-AISI 1045 AISI 4340 Steel W-Nr. 1.6511 DIN 36CrNiMo4 - OTAI Aisi 4340 Steel is a high quality Quenched and Tempered Alloy Structural steel, Oil Quenched & Tempered Hardness is 28-34 HRc.4340 Annealing delivery hardness less than 250HB. 4340 Alloy structural steel properties is very simliar with GB 40CrNiMo steel, JIS SNCM439 and DIN 1.6511 36CrNiMo4 Alloy structural steel.