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Maraging steel 250, 300, and 350 sheets and plates are incredibly strong, low-carbon alloys celebrated for their remarkable toughness, dimensional stability, and ease of fabrication. Unlike traditional steels that rely on carbon content for strength, these alloys gain their impressive properties mainly through aging heat treatment, which enhances their mechanical performance while keeping ductility intact. You’ll find maraging steels in a variety of high-stakes industries, including aerospace, tooling, and high-performance engineering, where top-notch strength and resistance to fractures are non-negotiable. They come in different thicknesses and sizes, with grades 250, 300, and 350 indicating progressively higher levels of tensile strength to cater to specific design needs.
The chemical makeup of maraging steels usually features very low carbon (less than 0.03%) and a high nickel content (around 18%), along with cobalt, molybdenum, and titanium as essential alloying elements. This distinctive composition allows for age hardening, resulting in tensile strengths that range from 1,700 MPa for Grade 250 to an impressive 2,100 MPa for Grade 350, all while ensuring good toughness and weldability. These grades also showcase low thermal expansion and outstanding fatigue resistance, making them perfect for critical applications that require precise performance and durability.
| Specification : | ASTM A538, AMS 6512, Mil-S-46850D, BS S162, DTD 5212, MSRR 6551, MAT 102, MIA 101 |
| Standard : | AMS, AMS, API |
| Size : | 20mm x 1200 x 500 |
| Specialize sheets : | Shim, Perforated Sheet, B. Q. Profile. |
| Finish : | Cold rolled sheet (CR), 2D, Hot rolled plate (HR), 2B, BA NO(8), SATIN (Met with Plastic Coated) |
| Hardness : | Quarter Hard, Soft, Hard, Half Hard, Spring Hard etc. |
| Grade : | Maraging Steel 250/ 300 / 350 (UNS-K92890, K93120, S35000) |
| Weight% | C | Si | Mn | S | P | Co | Ni | Mo | Ti | Al | Fe |
| Maraging 300 | 0.03 max | 0.10 max | 0.10 max | 0.010 max | 0.010 max | 8.0-9.5 | 18.0-19.0 | 4.6-5.2 | 0.55-0.80 | 0.05-0.15 | Bal |
| Material | 0.2 % Yield Strength ksi | Ultimate Tensile Strength ksi | Elongation in 4D(%) | Reduction of Area % | Hardness Rc |
| Maraging 300, Solution Annealed 1500° F (816°C), 1hr, AC | 120 | 150 | 16 | 70 | 30 |
| Solution Annealed Plus Aged 900 ° F (482°C), 3 hrs AC | 280 | 290 | 8 | 40 | 52 |
| STANDARD | UNS | Material No | AMS | ASTM | Mil-S | BS | DTD | MSRR |
| Maraging Steel | K92890, K93120, S35000 | – | 6512 | A538 | 46850D | S162 | 5212 | 6551 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Marraging steel 250/300/350 sheets and plates provide exceptional strength and toughness, making them ideal for aerospace, equipment, and defense applications They provide excellent machinability in the annealed state and exhibit excellent resistance to cracking and fatigue. Their low-carbon design ensures maximum distortion when heat treated, while the high nickel content increases corrosion resistance. Steel inserts are easily welded together, offering versatility in construction. These materials retain their mechanical properties even at elevated temperatures, providing reliability in harsh environments. Its durability and longevity make it cost-effective for critical applications..
You’ll see maraging steel 250/300/350 sheets and plates widely utilized in aerospace components, rocket motor cases, high-performance gears, tooling dies, and even nuclear reactors. Their unique blend of ultra-high strength and toughness can handle demanding mechanical loads and dynamic stresses with ease. Additionally, these steels find their way into sports equipment, medical devices, and precision instruments where reliability and performance are paramount. Thanks to their excellent weldability and machinability, maraging steels can be crafted into complex shapes and intricate designs, making them a go-to choice for cutting-edge engineering solutions.
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