Premium EN24 Alloy Steel for Heavy Duty Application
High-Strength Alloy Steel

EN24, also referred to as 817M40 or AISI 4340, is a high-strength alloy engineering steel well known for its excellent toughness, wear resistance, and fatigue strength. It contains chromium, molybdenum, and nickel, which give it superior hardenability and mechanical properties. With its high tensile strength, good ductility, and ability to withstand heavy loads, EN24 is widely used in demanding industrial applications where both strength and durability are critical.

The chemical composition of EN24 includes 0.36–0.44% carbon, 0.90–1.40% chromium, 0.20–0.35% molybdenum, 1.30–1.80% nickel, 0.45–0.70% manganese, and 0.10–0.35% silicon, with low levels of phosphorus and sulfur. It provides tensile strength in the range of 85–130 ksi (586–896 MPa), yield strength between 50–110 ksi (345–758 MPa), and elongation of 12–25%. The steel also has a Brinell hardness between 150–270 depending on condition and responds well to quenching and tempering, making it suitable for high performance parts.

MOKSH TUBES & FITTINGS LLP supplies a wide range of EN24 products such as round bars, bright bars, hex bars, flat bars, shafts, forgings, hollow bars, seamless and welded pipes, tubes, flanges, fittings, fasteners, sheets, plates, coils, strips, and custom-fabricated components. These products are produced to international standards and can be delivered in annealed, hot finished, cold drawn, or quenched and tempered conditions, ensuring precise performance for industrial applications.

EN24 steel is widely used in industries such as automotive, aerospace, defense, power generation, construction, mining, oil and gas, and general engineering. In automotive and transport, it is used for gear shafts, pinions, drive shafts, and transmission parts. In aerospace and defense, it is applied in landing gear, actuators, fasteners, and structural fittings. For power generation, it is used in turbine shafts and couplings, while in oil and gas, it is used for pump shafts, tool joints, and downhole components. Its toughness also makes it suitable for mining equipment, hydraulic rams, and heavy engineering machinery.

MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, exporter, and stockist of EN24 steel products, offering in-house heat treatment, forging, CNC machining, and custom processing to meet client specific requirements. With strict dimensional accuracy, ISO-certified quality control, quick delivery, and a strong global supply network, the company ensures consistent performance and reliability. Customers also benefit from custom sizing, special finishes, and expert metallurgical support, making MOKSH TUBES & FITTINGS LLP a preferred partner for high quality EN24 steel solutions.