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Inconel 718 Round Bar –High-Strength Quality From A Leading Manufacturer
Say hello to Inconel 718 Round Bar, a premium offering from our expert China manufacturer. This nickel-chromium superalloy blends high strength, corrosion resistance, and toughness across extreme temperatures, making it a standout for critical applications. Our factory delivers reliable, high-performance solutions from Inconel 718 nickel alloy bars in aerospace to oilfield components.
Price: Contact Us for a Custom Quote
Want to price for Inconel 718 Round Bar? Contact our team for a custom quote. Costs vary by diameter, length, and volume—reach out today for competitive rates!
Specifications of Inconel 718 Round Bar
- Diameter: 5 mm – 500 mm
- Length: Up to 6000 mm (custom lengths available)
- Surface Finish: Hot-rolled, cold-drawn, or polished
- Standards: ASTM B637, AMS 5662/5663, UNS N07718
- Tolerance: ±0.05 mm (precision options on request)
Our inconel bar stock is built to your specs!
Features (Advantages)
- High Strength: Exceptional tensile and creep-rupture properties.
- Corrosion Resistance: Fights oxidation and pitting in harsh conditions.
- Wide Temp Range: Performs from -253°C to 704°C (-423°F to 1300°F).
- Weldability: Joins easily without cracking.
- Durability: Perfect for Inconel 718 high nickel alloy round bars in tough setups.
Applications
- Aerospace: Turbine blades, rocket motor casings.
- Oil & Gas: Valves, downhole tools with Inconel 718 bar.
- Chemical Processing: Reactor shafts and fasteners.
- Power Generation: Gas turbine components.
- Marine: High-strength bolts in corrosive environments.
Chemical Composition
| Element | Symbol | Weight % |
|---|---|---|
| Nickel | Ni | 50.0 - 55.0 |
| Chromium | Cr | 17.0 - 21.0 |
| Molybdenum | Mo | 2.8 - 3.3 |
| Niobium | Nb | 4.75 - 5.5 |
| Iron | Fe | Balance |
| Titanium | Ti | 0.65 - 1.15 |
| Aluminum | Al | 0.2 - 0.8 |
| Carbon | C | ≤ 0.08 |
| Manganese | Mn | ≤ 0.35 |
| Silicon | Si | ≤ 0.35 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 965 - 1100 MPa |
| Yield Strength | ≥ 550 MPa |
| Elongation | ≥ 30% |
| Hardness (Brinell) | ≤ 331 HB |
| Density | 8.19 g/cm3 |
Chemical Properties
- Acids: Resists sulfuric, hydrochloric, and nitric acids moderately.
- Alkaline Solutions: Stable in mild bases up to 538°C (1000°F).
- Chlorides: Strong against stress corrosion cracking.
Best in mixed corrosive-oxidative settings; less ideal in highly oxidizing acids.
Things to Note (Limitations)
- High Heat: Strength drops above 704°C (1300°F).
- Oxidizing Acids: Weaker in nitric or ferric-rich conditions.
- Machining: Work-hardens fast, needing slow, aggressive cuts.
Corrosion Data for Inconel 718
| Environment | Corrosion Rate (mm/year) | Resistance |
|---|---|---|
| Fresh Water | < 0.01 | Excellent |
| Salt Water (3.5% NaCl) | 0.02 - 0.05 | Excellent |
| Humid Air | < 0.01 | Excellent |
| Sulfuric Acid (10%) | 0.1 - 0.3 | Good |
| Nitric Acid (10%) | 0.5 - 1.0 | Moderate |
Contact us for detailed corrosion resistance data specific to your application.
Welding and Fabrication Tips
- Welding: Use GTAW (TIG) with ERNiCrMo-3 filler; no post-weld aging needed.
- Forging: Heat to 1010-1150°C (1850-2102°F); cool in air.
- Machining: Annealed state best; use rigid tools for Inconel 718 high nickel alloy round bars.
Customer Reviews
Frequently Asked Questions
Q1: How does Inconel 718 compare to Inconel 625?
A: Inconel 718 boasts higher strength (965-1100 MPa vs. 930 MPa) due to age-hardening, ideal for high-stress parts. Inconel 625 wins in corrosion resistance across broader conditions—pick 718 for strength, 625 for corrosion.
Q2: What’s the best use for Inconel 718 Nickel Alloy Bar?
A: It’s perfect for extreme heat and stress—like aerospace turbines, oilfield valves, or Inconel 718 bar in power generation. Strength and toughness shine where others falter.
Q3: Is Inconel 718 stronger than stainless steel?
A: Yes, with tensile strength up to 1100 MPa vs. 316’s 515 MPa, Inconel 718 outmuscles stainless, especially at high temps, plus better corrosion resistance in mixed environments.
Q4: Can Inconel 718 be welded effectively?
A: Absolutely! Use TIG or MIG with ERNiCrMo-3 filler—it welds cleanly with no post-weld aging needed. Inconel 718 alloy make fabrication a snap.
Q5: How does Inconel 718 Bar perform at cryogenic temperatures?
A: It’s a star, retaining toughness down to -253°C—great for inconel 718 bar in LNG systems or cryogenic aerospace components.