Get in touch with us
Leave a message
18Ni250 Maraging Steel Plate – High-Strength Quality from a Leading Manufacturer
18Ni250 Maraging Steel Plate is a low-carbon, ultra-high-strength alloy engineered for exceptional toughness and durability. With 18% nickel and an aging process that boosts strength to ~1720 MPa, this Hot-Rolled plate excels in aerospace, tooling, and defense, delivering precision and reliability where it counts.
Price: Contact Us for a Custom Quote
Need pricing for 18Ni250 Maraging Steel Plate? Contact us at sales for a custom quote. Our cold-rolled and hot-rolled options offer excellent value for high-performance applications.
Specifications of 18Ni250 Maraging Steel Plate
Our Steel Plate comes in various configurations:
- Standards: ASTM A579, AMS 6520, UNS K92890
- Thickness: 0.1″ – 4″ (2.5 mm – 101.6 mm)
- Width: Up to 48″ (1219 mm)
- Length: Customizable, up to 144″ (3658 mm)
- Surface Finish: Hot Rolled, Cold Rolled, or polished
Key Features (Advantages)
- High strength (1720 MPa post-aging)
- Superior fracture toughness
- Low distortion during heat treatment
- Excellent weldability and machinability
- Great fatigue resistance
Applications
- Aerospace: Rocket casings, landing gear
- Tooling: Die casting molds, extrusion tools
- Defense: Missile components, armor plates
- Automotive: High-strength panels
- Energy: Turbine bases
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 17.0 - 19.0 |
| Cobalt (Co) | 7.0 - 9.0 |
| Molybdenum (Mo) | 4.6 - 5.2 |
| Titanium (Ti) | 0.3 - 0.6 |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.03 |
| Silicon (Si) | ≤ 0.1 |
Mechanical Properties
| Property | Value (Aged) |
|---|---|
| Tensile Strength | 1650 - 1720 MPa |
| Yield Strength | 1600 - 1680 MPa |
| Elongation | ≥ 8% |
| Hardness (HB) | 480 - 520 |
Chemical Properties
18Ni250 Maraging Steel Plate shows moderate resistance to mild acids and alkalis in non-oxidizing conditions but weakens in highly oxidizing environments like nitric acid due to low chromium content. It’s built for strength, not corrosion resistance.
Things to Note (Limitations)
- Loses strength above 480°C (900°F)
- Limited corrosion resistance in harsh acids
- Higher cost due to alloying elements
- Requires post-weld aging for full strength
Corrosion Data for 18Ni250
| Environment | Corrosion Rate (mm/year) | Test Conditions | Factors Affecting Corrosion |
|---|---|---|---|
| Atmospheric (Air) | 0.02 – 0.05 | Ambient, 20-25°C, 50% humidity | Humidity, surface finish |
| Seawater (3.5% NaCl) | 0.1 – 0.25 | 25°C, aerated, annealed condition | Heat treatment, exposure duration |
| Sulfuric Acid (10%) | 0.25 – 0.4 | 25°C, de-aerated, aged condition | Concentration, aeration |
| Hydrochloric Acid (1M) | 0.4 – 0.7 | 25°C, de-aerated, welded/aged | Acid strength, aging temperature |
| Phosphoric Acid (0.6M) | 0.2 – 0.35 | 30°C, de-aerated, annealed condition | Temperature, heat treatment |
| Nitric Acid (10%) | 0.7 – 1.1 | 25°C, oxidizing environment | Low Cr content, oxidizing agents |
| Caustic Soda (10%) | 0.05 – 0.1 | 25°C, de-aerated | Temperature, concentration |
Welding and Manufacturing Tips
- Welding: TIG with matching fillers; age at 480°C for 3 hours post-weld.
- Forming: Anneal at 820°C before shaping Cold Rolled or Hot Rolled plates.
- Machining: Sharp tools, low speeds—pre-aging improves machinability.
Customer Reviews
Frequently Asked Questions
Q: How does 18Ni250 Maraging Steel compare to stainless steel?
A: 18Ni250 Maraging Steel offers far higher strength (up to 1720 MPa) and toughness than stainless steel, though it’s less corrosion-resistant—perfect for structural precision over rust-proofing.
Q: What’s the best use for Hot Rolled 18Ni250 Steel Plate?
A: Aerospace and tooling—ideal for casings and molds. Our factory in China supplies Hot Rolled plates optimized for these demanding applications.
Q: Is 18Ni250 Maraging Steel better than titanium?
A: 18Ni250 Steel provides greater strength (1720 MPa vs. 1100 MPa) and easier machining than titanium, but it’s heavier and less corrosion-resistant—best for strength-focused needs.
Q: Can Cold Rolled Maraging Steel Plate handle high temperatures?
A: Yes, up to 480°C—beyond that, 18Ni250 Maraging Steel weakens, so it’s suited for moderate heat environments.
Q: How weldable is Cold Drawn Steel Plate?
A: Very weldable with TIG and matching fillers—age post-weld at 480°C to restore 18Ni250 Steel Plate’s full strength.