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A renowned producer and supplier of high-performance 4340 Steel Sheets and Plates, Kunj Sheets and Plates is situated in Chennai, India. Known for their exceptional strength, durability, and resistance to fatigue, these plates and sheets are perfect for heavy-duty industrial and engineering applications. To satisfy the demands of demanding industries, Kunj Sheets and Plates guarantees adherence to international quality standards and exact dimensional accuracy. The company, which has a reputation for prompt delivery and customer-focused service, offers heat-treatable 4340 steel products that are ideal for applications needing high tensile strength and superior wear resistance.
Carbon (0.38–0.43%), nickel (1.65–2.00%), chromium (0.70–0.90%), manganese (0.60–0.80%), and molybdenum (0.20–0.30%) are all present in 4340 Steel, a low-alloy steel. With a tensile strength between 745 and 1860 MPa, a yield strength between 470 and 1600 MPa, and an elongation of up to 20%, depending on heat treatment, it provides exceptional mechanical properties. In addition, the steel has excellent fatigue resistance, high toughness, and the ability to be case-hardened for a harder surface. It is appropriate for a broad range of mechanical applications due to its moderate machinability and weldability.
| 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 offers many advantages including superior hardness, strength, and resistance to fatigue and fatigue. This compound is known for its high tensile strength and excellent performance in harsh conditions. It is highly weldable, allowing versatility in design and manufacturing. Also, 4340 steel exhibits good strength, which improves the performance of the heat treated product. These properties make it ideal for use in the aerospace, automotive, and heavy machinery industries, where durability and reliability are essential.
Because of their exceptional strength and durability, 4340 steel sheets and plates are used extensively in the automotive, aerospace, and military industries. Impact resistance is essential in the production of crankshafts, gears, axles, connecting rods, and landing gear components. They are used in pressure vessels, rigging equipment, and drilling tools in the oil and gas industry. The steel’s ability to tolerate high levels of stress makes it perfect for high-strength machine parts, shafts, and mould tooling. In demanding engineering environments, its ability to adapt to heat treatment processes enables precise control over mechanical properties.
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