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Khush Sheets and Plates stands out as a top manufacturer and supplier of 4340 Steel Sheet and Plate, proudly based in Delhi, India. This remarkable alloy is celebrated for its incredible strength, toughness, and resistance to fatigue, making it perfect for heavy-duty structural and engineering tasks. Our sheets and plates are meticulously processed to align with industry standards like ASTM A829 and SAE J404, guaranteeing reliable performance even under extreme mechanical and thermal conditions. With a commitment to quality, durability, and prompt delivery, Khush Sheets and Plates serves clients in the aerospace, defense, automotive, and tooling sectors across India and beyond.
4340 steel is a nickel-chromium-molybdenum alloy steel, typically containing 0.38–0.43% carbon, 1.65–2.00% nickel, 0.70–0.90% chromium, and 0.20–0.30% molybdenum. It’s renowned for its outstanding mechanical strength and deep hardenability. When heat-treated, it can achieve tensile strength up to 980 MPa (142 ksi), yield strength exceeding 830 MPa (120 ksi), and an elongation of about 17%. Additionally, it showcases excellent impact and fatigue resistance. At Khush Sheets and Plates, our 4340 steel sheets and plates come in annealed, normalized, or quenched & tempered conditions to meet a variety of industrial needs.
| Specification | ASTM A829 / ASTM A6, SAE J404, AMS 6359/ 2252/2301 |
| Grade | AISI 4340/ EN24 |
| Value Added Services |
|
| Silicon | 0.15/0.35 |
| Chromium | 0.70/0.90 |
| Molybdenum | 0.20/0.30 |
| Carbon | 0.38/0.43 |
| Manganese | 0.65/0.85 |
| Phosphorus | 0.025 max. |
| Sulfur | 0.025 max. |
| Nickel | 1.65/2.00 |
| Copper | 0.35 max. |
| Alloy | Thickness Range | Condition/ Temper | Specification | Tensile Strength Ksi | Yield Strength Ksi |
AISI 4340 | 3/8 Inch to 8-1/8 Inch | STRESS RELIEVED | ASTM A829 / ASTM A6 SAE J404 | – | – |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
4340 steel sheet and plate find extensive use in high-stress, high-strength applications across multiple industries. Khush Sheets and Plates provides this alloy steel for critical components like aerospace landing gear, drive shafts, crankshafts, heavy-duty gears, aircraft structural parts, and automotive racing elements. Its impressive tensile strength and fatigue resistance also make it a go-to choice for tooling, molds, fasteners, and high-performance machine parts. The ability of 4340 to endure extreme loads and wear makes it a favored material for applications that require reliability, durability, and impact resistance, even in tough environments.
The 4340 steel sheet and plate is widely used in high pressure applications due to its excellent hardness, strength and wear resistance. Commonly used in the aerospace, automotive, and oil and gas industries, 4340 steel is ideal for gears, shafts, crankshafts, heavy machinery parts, etc. They also make high-performance construction parts, pressure vessels, and equipment with high strength, fatigue and shock resistance Needed is a compound Usually heat treated to dissipation top hardness and durability.
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