AISI 4340 steel (UNS G43400) is an ultra-high strength medium carbon low alloy steel, which combines deep hardenability, high ductility, toughness and strength, and has high fatigue resistance and creep resistance.

4340 steel is an ultra-high strength steel classified a medium-carbon, low-alloy steel. 4340 steel has high strength, ductility, toughness, creep resistance, and fatigue resistance relative to most other steels. Hardness ranging from 24 to 53 HRC can …

4340 VAR AMS 6414 is a low alloy Chromium-Nickel-Molybdenum steel capable of being heat treated to high strength levels. This specification is for a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.

AISI 4340 alloy steel is a heat treatable and low alloy steel containing chromium, nickel and molybdenum. It has high toughness and strength in the heat treated condition. Chemical Composition

AMS 6484 (4340) is a broadly used deep-hardening constructional steel. The alloy features remarkable ductility and is suitable for producing highly stressed parts.

AISI 4340 steel is a medium carbon, low alloy steel known for its toughness and strength in relatively large sections. AISI 4340 is also one kind of nickel chromium molybdenum steels. 4340 alloy steel is generally supplied hardened and tempered in the tensile range of 930 – 1080 Mpa.

2025年2月28日 · What are the key properties of SAE AISI 4340 steel? SAE AISI 4340 steel is a medium-carbon, low-alloy steel known for its exceptional strength, toughness, and fatigue resistance. It has a chemical composition rich in nickel, chromium, and molybdenum, enhancing its hardenability and wear resistance.

2024年12月9日 · When it comes to engineering materials that combine high strength, toughness, and versatility, SAE AISI 4340 alloy steel stands out as a top contender. Known by its UNS designation G43400, this low-alloy steel is renowned for its exceptional mechanical properties and wide range of applications.

2020年5月30日 · SAE-AISI 4340 steel is an alloy steel formulated for primary forming into wrought products. 4340 is the designation in both the SAE and AISI systems for this material. G43400 is the UNS number. It can have a moderately high tensile strength among SAE-AISI wrought steels.

2025年3月3日 · 4340 steel is a high-strength, low-alloy metal recognized for its durability, fatigue resistance, and ability to withstand wear. It’s a medium-carbon steel, typically containing 0.40% to 0.42% carbon, along with nickel, chromium, and molybdenum, which give it exceptional strength and wear resistance.