Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.)
✓ Ultra-High Strength: Inconel 718 achieves 1,275 MPa yield strength post-aging – 50% stronger than Inconel 625 at 650°C (1,202°F).
✓ Corrosion Immunity: Resists pitting in seawater, H₂S/CO₂ sour gas, and sulfuric acid (up to 15%) at 200°C (392°F).
✓ Thermal Fatigue Resistance: Withstands 10,000+ thermal cycles between **-200°C (-328°F)** and 700°C (1,292°F) without cracking.
✓ Precision Machining: Hot/cold-finished bars with **±0.05mm diameter tolerance** and Ra ≤1.6μm surface finish for CNC applications.
Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.)
Engineered for industries requiring exceptional mechanical strength, thermal stability, and corrosion resistance, Inconel® alloy round bars are precision-machined from nickel-chromium superalloys to excel in aerospace, oil & gas, and nuclear applications. With compositions like Inconel 718 (Ni-52.5%, Cr-19%, Nb-5%), these bars withstand continuous temperatures up to 700°C (1,292°F) while resisting chloride stress corrosion cracking (Cl-SCC), sulfidation, and creep deformation. Certified to ASTM B446, AMS 5662, and NACE MR0175, they outperform stainless steel and titanium with 3x lifespan in extreme environments.
- Diameters: 5mm–300mm (hot-finished) / 3mm–100mm (cold-drawn)
- Lengths: 1m–6m (standard) / custom-cut to 12m
- Surface Finishes: Turned, Ground (Ra ≤0.8μm), Polished (Ra ≤0.4μm)
- Mechanical Properties (Inconel 718, Aged): Yield Strength ≥1,100 MPa | Tensile Strength ≥1,400 MPa | Elongation ≥12% | Hardness ≤40 HRC
| Parameter Category | Inconel 600 | Inconel 625 | Inconel 718 | Inconel X-750 |
|---|---|---|---|---|
| Material Standard | ASTM B166, AMS 5665 | ASTM B446, AMS 5666 | ASTM B637, AMS 5662 | ASTM B637, AMS 5667 |
| Chemical Composition (%) | Ni: ≥72, Cr: 14–17, Fe: 6–10, C: ≤0.15 | Ni: ≥58, Cr: 20–23, Mo: 8–10, Nb+Ta: 3.15–4.15, Fe: ≤5.0 | Ni: 50–55, Cr: 17–21, Nb+Ta: 4.75–5.50, Fe: ≤18.0, Mo: 2.8–3.3 | Ni: ≥70, Cr: 14–17, Fe: 5–9, Ti: 2.25–2.75, Al: 0.4–1.0 |
| Tensile Strength (MPa) | 550–720 (Annealed) | 930–1030 (Annealed) | 1240–1450 (Aged) | 1035–1240 (Aged) |
| Yield Strength (MPa) | 240–345 (Annealed) | 517–690 (Annealed) | 1035–1240 (Aged) | 690–1035 (Aged) |
| Elongation (%) | ≥30 (in 50mm) | ≥30 (in 50mm) | ≥12 (in 50mm) | ≥20 (in 50mm) |
| Hardness | Rockwell B ≤90 | Rockwell B ≤96 | Rockwell C 35–45 | Rockwell C 25–35 |
| Density (g/cm³) | 8.47 | 8.44 | 8.19 | 8.28 |
| Melting Range (°C) | 1320–1370 | 1290–1350 | 1260–1336 | 1390–1430 |
| Thermal Conductivity (W/m·K) | 14.9 (20°C) | 12.0 (20°C) | 11.4 (20°C) | 13.5 (20°C) |
| Thermal Expansion (10⁻⁶/°C) | 13.3 (20–100°C) | 12.8 (20–100°C) | 13.0 (20–600°C) | 13.4 (20–100°C) |
| Max Service Temperature (°C) | 1100 (Oxidizing) | 980 (Oxidizing) | 700 (Long-Term) | 815 (Oxidizing) |
| Heat Treatment | Annealing: 870–980°C (air cooling). | Solution Annealing: 1093–1177°C (rapid cooling). | Aging: 720°C (8h) after solution treatment. | Aging: 705°C (20h) after solution treatment. |
| Surface Finishes | Turned, Ground, Peeled, Polished (Ra ≤0.8μm). | Same as Inconel 600. | Turned, Ground, Centerless Ground. | Turned, Ground, Polished. |
| Round Bar Dimensions | Diameter: 5mm–300mm Length: 3–6m (Cut-to-Size). | Same as Inconel 600. | Diameter: 5mm–250mm Length: 3–6m. | Diameter: 5mm–200mm Length: 3–6m. |
| Key Applications | Valve shafts, nuclear reactor components, heat exchanger parts. | Aerospace fasteners, marine shafts, chemical pump rods. | Jet engine shafts, rocket motor casings, high-strength bolts. | Gas turbine blades, nuclear reactor springs, high-temperature fasteners. |
Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.) Applications
| Industry | Critical Use Cases | Inconel® Round Bar Advantage |
|---|---|---|
| Aerospace | Jet engine shafts, landing gear actuators | 1,275 MPa yield strength for 20,000+ flight cycles. |
| Oil & Gas | Subsea wellhead bolts, downhole tools | Resists H₂S >10,000 ppm at 200°C (392°F). |
| Chemical Processing | Reactor agitators, pump shafts | Immune to crevice corrosion in HCl/H₂SO₄ blends. |
| Nuclear | Control rod drive mechanisms, reactor internals | Neutron irradiation resistance per ASME III. |
Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.) Product Packaging
Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.) (UNS N07718/N06625, ASTM B637/ASME SB-637 compliant) are engineered for mission-critical applications in aerospace turbines, nuclear reactors, and high-pressure chemical processing systems (operating up to 1,300°C). To ensure dimensional precision, surface integrity, and metallurgical stability during global transit, we deploy aerospace-certified packaging systems and thermal-controlled logistics compliant with AMS 5662, NACE MR0175, and ISO 4955 standards.
Small Bars (<50mm)
Bundled with steel straps + VCI-coated wraps, crated on reinforced wooden pallets.
Large Bars (≥50mm)
End caps + edge protectors, stacked in custom steel racks with desiccant units.
Anti-Scratch Sleeving
Silicone-impregnated fabric for polished/ground surfaces.
RFID Tags
Embedded tracking chips with real-time material certification access.
Inconel® Alloy Round Bar (Inconel 600, 625, 718, etc.) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
Why Choose Us?
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specifications and customization
Unlimited size, support non-standard cutting. Multiple surface treatments.
Professional capabilities
25 Years Of Focus On Metal Materials Science
Certification & Quality Assurance
Products comply with international standards such as ASTM, EN, JIS, etc., and are 100% tested from raw materials to finished products
Fast delivery & global supply
Global urgent orders are delivered within 15 days. One-stop service
FAQ
Q1: How does Inconel 718 differ from Inconel 625 in high-stress applications?
A: Inconel 718 offers 40% higher yield strength and superior fatigue resistance, while Inconel 625 excels in chloride-rich environments.
Q2: What heat treatment optimizes machinability?
A: Solution anneal at 980°C (1,796°F) for 1 hour, air cool, then age at 720°C (1,328°F) for 8h to achieve AMS 5662 specs.
Q3: Are bars certified for subsea bolting?
Full compliance includes:
- NACE MR0175/ISO 15156-3
- ASTM F593 (Stainless Steel Bolting Standards)
- DNV-OS-B101 Subsea Certification
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 1 ton MOQ.
Custom sizes/tempers: 5 tons MOQ (lead time 35 days).
Q5: How to verify material authenticity?
Scan QR codes with AlloyGuard™ app to access:
- XRF validation against PMI certificates
- Third-party SGS/BV test reports
- Blockchain-validated EN 10204 3.1 certifications
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