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18Ni200 Maraging Steel Plate –High-Strength Quality From A Leading Manufacturer
18Ni200 Maraging Steel Plate is a low-carbon, ultra-high-strength alloy featuring 18% nickel, hardened through an aging process to deliver a tensile strength of ~1400 MPa. Known for its toughness and minimal distortion, this Hot-Rolled plate is a go-to material for aerospace, tooling, and defense, balancing strength with workability for demanding environments.
Price: Contact Us for a Custom Quote
Interested in 18Ni200 Maraging Steel Plate pricing? Reach out at sales for a tailored quote. Our cold-rolled and hot-rolled options offer exceptional value for high-performance needs.
Specifications
Our Steel Plate comes in various configurations:
- Standards: ASTM A538, AMS 6520, UNS K92810
- 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 annealed
Key Features (Advantages)
- High strength (1400 MPa post-aging)
- Excellent toughness and ductility
- Low distortion during heat treatment (~0.001 in/in)
- Superior weldability and machinability
- Good fatigue resistance
Applications
- Aerospace: Rocket casings, landing gear panels
- Tooling: Injection molds, die bases
- Defense: Missile components, structural plates
- Automotive: High-performance chassis parts
- Industrial: Pressure vessel linings
Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 17.0 - 19.0 |
| Cobalt (Co) | 8.0 - 9.0 |
| Molybdenum (Mo) | 3.0 - 3.5 |
| Titanium (Ti) | 0.15 - 0.25 |
| Aluminum (Al) | 0.05 - 0.15 |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.03 |
Mechanical Properties
| Property | Value (Aged) |
|---|---|
| Tensile Strength | 1350 - 1450 MPa |
| Yield Strength | 1300 - 1400 MPa |
| Elongation | ≥ 10% |
| Hardness (HB) | 360 - 400 |
Chemical Properties
18Ni200 Maraging Steel provides moderate resistance to mild acids and alkalis in non-oxidizing conditions but falters in highly oxidizing environments like nitric acid due to low chromium content. It’s designed for strength, not corrosion resistance.
Things to Note (Limitations)
- Weakens above 500°C (932°F)
- Limited corrosion resistance in acidic extremes
- Higher cost due to alloying elements
- Requires aging post-welding for full strength
Corrosion Data
| 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 time |
| Sulfuric Acid (10%) | 0.25 – 0.4 | 25°C, de-aerated, aged condition | Concentration, aeration |
| Hydrochloric Acid (1M) | 0.4 – 0.6 | 25°C, de-aerated, aged condition | 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 – 1.0 | 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 480-500°C for 3-6 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 18Ni200 Maraging Steel compare to stainless steel?
A: 18Ni200 Maraging Steel offers higher strength (up to 1450 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 18Ni200 Steel Plate?
A: Aerospace and tooling—ideal for casings and mold bases. Our factory in China supplies Hot Rolled plates tailored for these demanding applications.
Q: Is 18Ni200 Maraging Steel better than titanium?
A: 18Ni200 Maraging Steel provides greater strength (1450 MPa vs. 1100 MPa) and easier machining than titanium, but it’s heavier and less corrosion-resistant—great for strength-focused needs.
Q: Can Cold Rolled 18Ni200 Steel Plate handle high temperatures?
A: Yes, up to 500°C—beyond that, 18Ni200 Steel Plate weakens, so it’s best 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 full strength.