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Based in Delhi, India, Daksh Sheets and Plates is a reputable producer and supplier of high-strength 4340 Steel Sheets and Plates. We provide alloy steel plates that satisfy the exacting specifications of heavy-duty industrial applications and are renowned for their quality, accuracy, and dependability. Our 4340 steel products are perfect for high-stress and structural settings because they are heat-treated to provide exceptional strength, toughness, and fatigue resistance. Daksh serves industries like aerospace, automotive, defence, oil & gas, and machinery manufacturing in India and overseas markets with a robust supply chain, competitive pricing, and technical know-how.
With roughly 0.8% chromium, 1.8% nickel, 0.25% molybdenum, 0.4% carbon, and balanced iron, 4340 steel is a low-alloy, high-strength steel. This alloy has remarkable toughness and hardenability, especially after heat treatment. Even at low temperatures, it offers good impact toughness, high fatigue resistance, and tensile strength that varies from 745 to 1080 MPa (depending on the condition). 4340 is appropriate for heavy-duty applications due to its exceptional ductility, machinability, and wear resistance. For improved mechanical performance in crucial components, it is easily welded, forged, and heat-treated.
| 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.
Because of their exceptional strength, toughness, and resistance to wear, 4340 steel sheets and plates are frequently utilised in high-stress and high-performance applications. Crankshafts, drive shafts, heavy-duty gears, pressure vessels, and aircraft landing gear are examples of common applications. It is utilised for structural elements that need to have high fatigue and impact resistance in the automotive and defence industries. Additionally, it finds use in high-strength fasteners, tool manufacturing, and oil and gas drilling equipment. 4340 steel is perfect for parts subjected to high loads, vibration, and harsh environmental conditions because of its ability to function well under these circumstances.
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