Comparing MP35N Round Bars to Inconel 718: Which Alloy Suits Your Needs
When selecting high-performance alloys for critical applications, choosing between an MP35N round bar and Inconel 718 can be challenging. Both materials are renowned for exceptional strength, corrosion resistance, and durability. In this guide, ASC LLP, a leading steel products supplier, compares MP35N bars and Inconel 718 to help you determine which alloy suits your specific requirements.
What is MP35N?
MP35N is a nickel-cobalt-chromium-molybdenum alloy known for its excellent strength and corrosion resistance, especially in extreme environments. It complies with ASTM F562, ISO 5832-7, and NACE MR0175 ISO 15156-1 standards, making it ideal for aerospace, medical, marine, and oil & gas industries.
Key Characteristics of MP35N:
- High tensile strength: Up to 300 ksi after aging
- Outstanding corrosion resistance in seawater and hydrogen sulfide environments
- Excellent biocompatibility (ideal for medical implants)
- Good ductility and toughness
Common Product Forms:
- MP35N round bar
- MP35N bar stock
- MP35N rod
MP35N Specifications:
- UNS R30035 material
- Conforms to ASTM F562, ISO 5832-7
- Supplied as per NACE MR0175 ISO 15156-1 for sour gas applications
What is Inconel 718?
Inconel 718 is a precipitation-hardened nickel-chromium alloy with added niobium, molybdenum, and iron. It is widely used in aerospace, power generation, and petrochemical industries. Inconel 718 complies with ASME SB-637 and ASME SB-564 specifications.
Key Characteristics of Inconel 718:
- Excellent high-temperature strength and fatigue resistance
- Resistant to pitting and crevice corrosion
- Operates effectively up to 1300°F (704°C)
- Easily weldable and machinable
Common Product Forms:
- Round bars
- Rods and forged bars
- Plates and sheets
Inconel 718 Specifications:
- UNS N07718
- Conforms to ASME SB-637, ASME SB-564
MP35N Round Bar vs. Inconel 718: A Detailed Comparison
| Property | MP35N Round Bar (UNS R30035) | Inconel 718 (UNS N07718) |
| Standards | ASTM F562, ISO 5832-7, NACE MR0175 ISO 15156-1 | ASME SB-637, ASME SB-564, NACE MR0175 ISO 15156-1 |
| Strength | Extremely high tensile strength (up to 300 ksi after aging) | High strength, excellent fatigue and creep resistance |
| Corrosion Resistance | Excellent in chloride, seawater, and sour gas environments | Very good in oxidizing and high-temperature environments |
| Operating Temperature | Up to 600°F (316°C) | Up to 1300°F (704°C) |
| Machinability | Challenging due to high strength | Good machinability and weldability |
| Applications | Medical implants, marine, chemical processing, aerospace | Aerospace, power generation, gas turbines, oil & gas |
| Form Availability at ASC LLP | MP35N bar stock, MP35N rod, MP35N round bar | Inconel 718 round bars, rods, sheets |
Which Alloy Should You Choose?
- Choose MP35N Round Bar (UNS R30035 material) if:
- You need ultra-high strength and superior corrosion resistance in hydrogen sulfide or seawater environments.
- Your application requires compliance with ASTM F562, NACE MR0175 ISO 15156-1, and ISO 5832-7 for medical or offshore use.
- You require MP35N bars, MP35N rod, or MP35N bar stock for critical aerospace, oil & gas, or biomedical components.
- Choose Inconel 718 if:
- You need exceptional high-temperature performance with good weldability.
- Your application is in aerospace turbines, power plants, or petrochemical equipment operating under extreme temperatures and pressure.
- You’re looking for a balance of high strength, toughness, and excellent corrosion resistance with ease of fabrication.
Conclusion: MP35N or Inconel 718?
Both alloys are top performers in extreme conditions, but the final choice depends on your application requirements. If you prioritize extreme tensile strength, sour gas resistance, and medical-grade certification, MP35N round bar (UNS R30035) from ASC LLP is your ideal solution. If high-temperature durability and fatigue resistance are essential, Inconel 718 is a better fit.
Why Choose ASC LLP?
At ASC LLP, we are proud suppliers of MP35N bars, MP35N round bar, MP35N bar stock, MP35N rod, and Inconel 718 round bars, fully certified with ASTM F562, ASME SB-637, ASME SB-564, and NACE MR0175 ISO 15156-1 standards.
We offer:
- Competitive pricing
- Ready stock availability
- Custom cut-to-size services
- Timely global delivery
Explore the full range of MP35N Bars and Inconel 718 products at Amardeep Steel Centre LLP, and let us help you elevate your projects to new heights. Follow us on: Linkedin, Facebook, and Instagram.
