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For over two decades, Diaz Sheetsandplates has been a cornerstone of Manila’s industrial supply scene, building a reputation for unwavering reliability and deep technical expertise. We take pride in being your trusted local partner for high-strength materials, and our inventory of 4340 steel sheet and plate is a prime example of our commitment. Sourced and processed with meticulous care, this alloy is engineered to meet the rigorous demands of the most challenging projects, providing a robust solution for industries that cannot afford to compromise on performance or safety.
At its core, 4340 steel is defined by a sophisticated nickel-chromium-molybdenum composition, a blend that gives it a remarkable combination of strength and toughness. Through precise heat treatment, we can achieve exceptional mechanical properties, including a very high tensile strength and impressive resistance to wear and fatigue. This ability to be hardened to significant depths makes it a standout choice where ordinary steels would fail, offering a resilience that stands up to heavy impacts and demanding operational environments.
| Specification | ASTM A829 / ASTM A6, SAE J404, AMS 6359/ 2252/2301 |
| Grade | AISI 4340/ EN24 |
| Value Added Services |
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| 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.
This unique set of properties makes 4340 sheet and plate indispensable across a wide spectrum of critical applications. You’ll find it forming the backbone of heavy-duty machinery, vital aircraft components, and high-stress parts in the automotive and oil and gas sectors. It’s the material of choice for gears, axles, crankshafts, and drill collars—essentially, any part that must bear immense loads while maintaining structural integrity. By choosing our 4340 steel, you are investing in durability and reliability that extends the life and enhances the safety of your most important equipment.
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