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18Ni200 Maraging Steel Rod Manufacturer in China – High-Strength Alloy Solutions
The 18Ni200 Maraging Steel Rod is a high-strength, low-carbon alloy known for its exceptional toughness, ductility, and ease of fabrication. This maraging steel grade, containing 18% nickel, achieves superior strength through age-hardening, making it ideal for demanding applications. As a leading 18Ni200 Maraging Steel Rod manufacturer in China, we supply premium-quality rods for industries requiring reliability and precision.
Price: Contact Us for a Custom Quote
For the most competitive pricing on 18Ni200 Maraging Steel Bar, reach out to our sales team directly. We offer customized quotes for Steel Rod price based on your specific requirements, including dimensions, quantity, and delivery timelines. Contact us today to discuss your needs!
Specifications
Our Maraging Steel Rod is available in various sizes and finishes to meet diverse industrial needs. Below are the typical specifications:
- Diameter Range: 5 mm to 350 mm
- Length: Up to 6 meters (custom lengths available)
- Surface Finish: Hot rolled, cold drawn, polished, or as per request
- Standards: AMS 6512, MIL-S-46850
- Shape Variants: 18Ni200 round bar, 18Ni200 hexagonal bar
- Tolerances: As per ASTM standards or customer specifications
Key Features (Advantages)
- Ultra-High Strength: Achieves tensile strengths up to 1400 MPa after heat treatment.
- Excellent Toughness: Retains ductility and impact resistance even at high strengths.
- Ease of Fabrication: Can be machined in the annealed condition and hardened later.
- Good Weldability: Welds easily without preheating, maintaining structural integrity.
- Corrosion Resistance: Moderate resistance to atmospheric corrosion and mild environments.
Applications
The 18Ni200 Maraging Steel Rods is used in industries requiring high strength and reliability. Common applications include:
- Aerospace: Landing gear components, missile casings, and rocket motor cases.
- Tooling: Dies, punches, and injection molding tools.
- Defense: Structural components for military equipment and weaponry.
- Automotive: High-performance shafts and suspension components.
- Oil & Gas: Drill collars and high-pressure valve components.
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 |
| Carbon (C) | 0.03 max |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Value (Annealed) | Value (Aged) |
|---|---|---|
| Tensile Strength | 900 MPa | 1400 MPa |
| Yield Strength (0.2% offset) | 600 MPa | 1300 MPa |
| Elongation | 15% | 8% |
| Hardness (Brinell) | 280 HB | 450 HB |
| Density | 8.0 g/cm³ | 8.0 g/cm³ |
Chemical Properties
18Ni200 Maraging Steel exhibits moderate resistance to corrosive environments:
- Acids and Alkalis: Limited resistance to strong acids like sulfuric or hydrochloric; performs better in dilute solutions.
- Atmospheric Conditions: Good resistance to rust in dry or mildly humid environments; may require coatings in harsh conditions.
- Environmental Limits: Not recommended for prolonged exposure to highly corrosive media or saltwater without protective measures.
Things to Note (Limitations)
- Corrosive Environments: Susceptible to corrosion in strong acids or saltwater; protective coatings are advised.
- High Temperatures: Prolonged exposure above 500°C may reduce toughness and strength.
- Cost Considerations: Higher cost compared to conventional steels due to alloying elements and processing.
Corrosion Data
| Environment | Corrosion Rate (mm/year) | Conditions | Notes |
|---|---|---|---|
| Dry Atmosphere | <0.003 | 25°C, 12 months exposure | No significant corrosion |
| Humid Atmosphere (Coastal) | 0.015 | 25°C, 12 months exposure | Slight surface rust; coating advised |
| Distilled Water | 0.008 | 25°C, 6 months exposure | Minimal corrosion |
| 5% Sulfuric Acid | 0.2 | 30°C, 1 month exposure | Not recommended for prolonged exposure |
| 5% Sodium Chloride (Saltwater) | 0.1 | 25°C, 3 months exposure | Use protective coatings for marine use |
| 5% Sodium Hydroxide (Alkaline) | 0.025 | 40°C, 3 months exposure | Good resistance |
Welding and Manufacturing Tips
- Welding: Use TIG or MIG welding with matching maraging steel filler metals. Weld in the annealed condition and age-harden afterward to restore strength.
- Forming: Best formed in the annealed state; can be cold worked with minimal distortion.
- Machining: Machine in the annealed condition using carbide tools at moderate speeds; age-harden after machining for final hardness.
- Heat Treatment: Age at 480–500°C for 3–6 hours to achieve peak strength, as seen in 18Ni200 round bar applications.
Customer Reviews
Frequently Asked Questions
Q1: What’s the difference between 18Ni200 Maraging Steel and other maraging steel grades?
A: 18Ni200Â has 18% nickel and is optimized for high strength and toughness, with a tensile strength of up to 1400 MPa after aging. Other grades like 18Ni250 offer higher strength but may sacrifice some ductility.
Q2: Can this Steel Rod be used in corrosive environments?
A: It has moderate corrosion resistance but is not ideal for strong acids or saltwater without coatings. It performs well in dry or mildly humid conditions.
Q3: What industries commonly use 18Ni200 Maraging Steel Rod?
A: It’s widely used in aerospace, defense, tooling, automotive, and oil & gas for applications requiring high strength and reliability.
Q4: How can I request a quote for Maraging Steel Rod price?
A: Simply reach out to our sales team with your project specifications, and we’ll provide a tailored quote for price within 24 hours.
Q5: Is heat treatment required for 18Ni200 Steel Rod?
A: Yes, to achieve maximum strength, age-hardening at 480–500°C is recommended after machining or forming.
Q6: What surface finishes are available for 18Ni200 round bar?
A: We offer 18Ni200 round bar in hot rolled, cold drawn, polished, or custom finishes. Contact us to discuss your specific needs.