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Boikanyo Sheets and Plates is a reputable manufacturer and supplier located in Cape Town, South Africa, focusing on high-performance metal solutions. One of their standout products is the 4340 Steel Sheet and Plate, celebrated for its remarkable strength and toughness. With a strong dedication to quality, precision, and customer satisfaction, Boikanyo provides materials that meet rigorous industrial standards. They cater to a diverse array of sectors, including automotive, aerospace, and engineering. By offering reliable 4340 steel in various forms and sizes, Boikanyo ensures that clients receive durable, top-notch materials tailored to their specific application needs.
The 4340 Steel Sheet and Plate is a high-strength, low-alloy steel recognized for its outstanding toughness and fatigue resistance. Its typical chemical makeup includes carbon (0.38–0.43%), manganese (0.60–0.80%), chromium (0.70–0.90%), nickel (1.65–2.00%), and molybdenum (0.20–0.30%). This steel can be heat-treated to achieve impressive tensile strength (up to 1080 MPa), yield strength (~980 MPa), and good elongation (~20%). It also boasts excellent hardenability and impact resistance, making it perfect for components that face high stress and wear. These characteristics make 4340 ideal for demanding structural and mechanical applications.
| 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.
The 4340 Steel Sheet and Plate is widely utilized in scenarios where high strength, toughness, and wear resistance are critical. It’s a favored choice in the aerospace sector for crafting landing gear, drive shafts, and structural components. In automotive engineering, it finds its way into crankshafts, gears, and connecting rods. This material is also essential for heavy-duty equipment, defense systems, and oil & gas machinery, where reliability under stress is paramount. Thanks to its heat-treatability and fatigue resistance, 4340 steel is often the go-to for critical load-bearing parts. Boikanyo Sheets and Plates offers it in custom sizes to meet specific engineering requirements.
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