Inconel 718 High-Temperature Alloy Manufacturer
Inconel 718 is a nickel-chromium-based superalloy known for its high strength, heat resistance, and corrosion resistance, making it widely used in industries such as aerospace, oil & gas, nuclear power, and chemical processing.
Inconel 718 Supplier In China
SSM leads China’s Inconel 718 manufacturing sector by producing premium bars, plates, forgings, and custom components. Our products meet and exceed international ASTM and AMS standards, consistently satisfying the rigorous demands of global industries.
We manufacture Inconel 718 materials that deliver exceptional performance across aerospace, oil & gas, nuclear, and chemical processing applications. Our production capabilities ensure strict compliance with all relevant international specifications while maintaining superior quality control.
SSM - Professional Manufacturer of Inconel 718 Products
SSM offers the following Inconel 718 products:
| Product Type | Standard | Size Range |
| Bars | ASTM B637, AMS 5663 | Ø10mm-300mm |
| Plates | ASTM B670, AMS 5596 | Thickness 0.5mm-50mm |
| Forgings | AMS 5662, ASTM B637 | Customized per requirements |
| Custom Parts | Machined to drawings | Turning, welding, heat treatment, etc. |
Hot Sales of Monel Products
Inconel 718 Applications
✈️ Aircraft Engine Components
- Turbine blades, combustion chambers, nozzles
- Advantage: Resists oxidation at 700°C
🛢️ Oil & Gas Equipment
- Drill collars, valves, downhole tools
- Advantage: Resists H₂S/CO₂ corrosion
⚡ Nuclear Reactor Parts
- Fuel rod supports, pressure vessel bolts
- Advantage: Radiation-resistant + high-temperature creep resistance
⚗️ Chemical Reactor Linings
- Pickling tanks, heat exchanger tube sheets
- Advantage: Resists acid/alkali corrosion
🏎️ Racing Turbocharger Systems
- Turbo shafts, exhaust manifolds
- Advantage: Resists thermal fatigue cycling
One-Stop Inconel 718 Provider for All Your Needs
SSM has significant product advantages in manufacturing Inconel 718 Products. Whether it’s quality or price, we will meet your needs.
Related Inconel 718 Infomation
Inconel 718 Equivalent
| Standard | UNS | ASTM | AMS | EN | DIN | GOST | JIS |
| Equivalent Designation | N07718 | B637 (Bar), B670 (Plate) | 5662/5663 (Bar), 5596 (Sheet) | 2.4668 (NiCr19Fe19Nb5Mo3) | W.Nr. 2.4668 | ХН55МВКЮ (Russian Standard) | NCF 718 (Japanese Standard) |
Inconel 718 Chemical Composition (Weight %)
| Element | Content (%) | Function |
| Nickel (Ni) | 50-55% | Base element, provides corrosion resistance & high-temp stability |
| Chromium (Cr) | 17-21% | Forms protective oxide layer for corrosion resistance |
| Iron (Fe) | Balance | Cost-effective matrix element |
| Niobium (Nb) | 4.75-5.5% | Forms γ” precipitates for strengthening |
| Molybdenum (Mo) | 2.8-3.3% | Enhances strength & pitting resistance |
| Titanium (Ti) | 0.65-1.15% | Forms γ’ precipitates with aluminum |
| Aluminum (Al) | 0.2-0.8% | Works with Ti for age-hardening |
| Cobalt (Co) | ≤1.0% | Optional addition for high-temp stability |
| Carbon (C) | ≤0.08% | Controlled for weldability |
| Manganese (Mn) | ≤0.35% | Deoxidizer during melting |
| Silicon (Si) | ≤0.35% | Improves fluidity in casting |
| Phosphorus (P) | ≤0.015% | Minimized to prevent embrittlement |
| Sulfur (S) | ≤0.015% | Controlled for hot workability |
| Boron (B) | ≤0.006% | Enhances grain boundary strength |
| Copper (Cu) | ≤0.3% | Accidental impurity |
Inconel 718 Mechanical Properties (Annealed) & Physical Properties
Mechanical Properties (ASTM B637 / AMS 5662 Standard)
| Property | Value (Annealed) | Test Standard |
| Tensile Strength | ≥1240 MPa (180 ksi) | ASTM E8 |
| Yield Strength (0.2%) | ≥1030 MPa (150 ksi) | ASTM E8 |
| Elongation (50mm Gage) | ≥12% | ASTM E8 |
| Reduction of Area | ≥15% | ASTM E8 |
| Hardness | 35-45 HRC | ASTM E18 |
| Impact Toughness | ≥50 J (at 25°C) | ASTM E23 |
Physical Properties
| Property | Value |
| Density | 8.19 g/cm³ |
| Melting Range | 1260-1336°C (2300-2440°F) |
| Thermal Conductivity | 11.4 W/m·K (at 100°C) |
| Electrical Resistivity | 1.25 μΩ·m (at 20°C) |
| Specific Heat Capacity | 435 J/kg·K (at 20°C) |
| Magnetic Permeability | ~1.02 (Non-magnetic) |
| Thermal Expansion | 13.0 μm/m·K (20-100°C) |
Benefits of Inconel 718
- Temperature Resistance (-250°C to 700°C operational range)
- Corrosion Immunity (pH 0-14 full spectrum resistance)
- Fatigue Strength (100,000+ cycles at 550°C)
- Fabrication Flexibility (Weldable/machinable)
How does Inconel 718 compare to other superalloys?
| Property | Inconel 718 | Inconel 625 | Hastelloy X |
| Max Temp | 700°C | 980°C | 1200°C |
| Strength | Very High | Moderate | High |
| Weldability | Excellent | Good | Fair |
| Cost | Moderate | High | Very High |
FAQ
Inconel 718 is a nickel-chromium-based superalloy strengthened by niobium (Nb) and molybdenum (Mo). It offers high strength, corrosion resistance, and thermal stability up to 700°C (1292°F).
Challenging but possible with proper tools (carbide or ceramic inserts).
Recommended: Slow speeds, high feed rates, and coolant use.
Solution Annealing – 955-1010°C (1750-1850°F) + rapid cooling
Aging – 718-760°C (1325-1400°F) for 8 hours to maximize strength
No, it is non-magnetic due to its high nickel content.
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