Browse Our Collection
Get instant quotes that fit your budget perfectly.
Nial Sheets and Plates is a reputable manufacturer and supplier located in Houston, USA, specializing in top-notch 4340 Steel Sheets and Plates to meet a variety of industrial needs. Renowned for its impressive strength, toughness, and fatigue resistance, 4340 steel is a highly versatile alloy that shines in demanding applications. Nial is dedicated to precision engineering, dependable sourcing, and prompt delivery for clients in the aerospace, automotive, and defense industries. Their unwavering commitment to quality and customer satisfaction has made them a go-to choice for businesses looking for durable, performance-driven alloy steel products, including custom sizes and specifications tailored to specific project needs.
The composition of 4340 Steel Sheets and Plates includes carbon (0.38–0.43%), manganese (0.60–0.80%), chromium (0.70–0.90%), nickel (1.65–2.00%), molybdenum (0.20–0.30%), and silicon (0.15–0.30%). These alloying elements contribute to the exceptional strength and hardenability of 4340 steel. It boasts a tensile strength ranging from 850 to 1000 MPa, a yield strength of 700 to 900 MPa, and an elongation of about 20%. Additionally, it offers remarkable toughness and fatigue resistance, even when heat-treated, making it perfect for high-performance engineering and structural 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.
Industries that require high strength, toughness, and fatigue resistance widely utilize 4340 Steel Sheets and Plates. Typical applications include aircraft landing gear, automotive crankshafts, high-performance shafts, and other critical structural components that endure extreme stress. In the defense sector, it’s employed in armored vehicle parts and structural frames. Its outstanding mechanical properties make it an excellent choice for oil and gas tools, heavy-duty machinery components, and die forging operations. The adaptability of 4340 steel to heat treatment and its ability to retain strength at elevated temperatures further enhance its suitability for challenging industrial environments.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
Discover high-quality products tailored to meet your unique needs and preferences.
Get instant quotes that fit your budget perfectly.
Houston, TX 77041
Copyright 2025 Nial Sheet and Plates. All rights reserved