What makes 4340 steel the best choice for high-strength applications?
4340 steel offers exceptional strength and toughness due to its balanced composition of 0.80Cr 1.8Ni 0.25Mo (0.38-0.43C). This nickel-chromium-molybdenum alloy provides superior tensile strength, fatigue resistance, and impact toughness, making it ideal for aerospace landing gear, drive shafts, structural components, and critical fasteners in demanding applications.
What forms of 4340 steel plate do you supply?
We supply comprehensive 4340 steel product forms including sheet, strip, plate, bars, forgings, tubing, and forging stock. All products meet stringent AMS, BMS, MIL, and DMS specifications for aerospace, defense, and industrial applications, with various heat treatment conditions available.
What specifications do your 4340 steel products meet?
Our 4340 steel products meet multiple specifications including AMS 6359, AMS 6409, AMS 6414, AMS 6415, AMS 6454, AMS 6484, BMS 7-26, BMS 7-28, MIL-S-5000, MIL-DTL-24528, and DMS 1555. Each specification is tailored for specific applications, heat treatments, and quality requirements, ensuring optimal performance in critical environments.
What is the difference between standard and consumable electrode remelted 4340?
Consumable electrode remelted (CER) or vacuum arc remelted (VAR) 4340 steel offers enhanced cleanliness, reduced segregation, and improved mechanical properties compared to standard air-melted material. This process produces superior fatigue life and fracture toughness, making it essential for critical aerospace applications like landing gear and high-stress structural components.
Do you offer custom sizing for 4340 steel plate?
Yes, we provide quick response to custom cut and odd size requests with value-added services including precision sawing, waterjet cutting, flame cutting, and machining for 4340 steel materials. Our team can accommodate specific dimensional requirements and provide normalized & tempered or as-rolled conditions per your specifications.
What industries commonly use your 4340 steel plate?
Our 4340 steel plate serves aerospace, defense, automotive, oil & gas, heavy machinery, power generation, and tooling industries. The material's exceptional strength-to-weight ratio and toughness make it ideal for aircraft landing gear, drive shafts, structural components, pressure vessels, and critical fasteners in demanding applications.
What certifications do your 4340 steel products carry?
All our 4340 steel products come with full material certifications and traceability. Our facility is ISO 9001 and AS 9100 certified, ensuring compliance with aerospace and defense quality standards. We provide complete documentation including mill test reports, certificates of conformance, and heat lot traceability for critical applications.
