ZYTC Alloy 718 (UNS N07718) Precipitation-Hardenable Nickel Superalloy 

As an ISO 9001 and AS9120 certified supplier, ZYTC Alloy presents this technical guide for Inconel 718 for confident material evaluation.

I. Product Information

• Material Name: Inconel 718 Nickel-Chromium Superalloy (UNS N07718 / W.Nr. 2.4668)
• Material Definition: A precipitation-hardenable nickel-chromium superalloy offering exceptional high strength, creep resistance, and fatigue life up to 704°C (1300°F) , with oxidation resistance to 982°C (1800°F) .
• Core Value Proposition: Maintains high mechanical properties at elevated temperatures while offering excellent weldability. Slow aging response reduces cracking risk during heat treatment.
• Key Advantages: Precipitation strengthened (γ'' phase) | Slow aging response for better weldability | NACE compliant for sour service | Versatile heat treatment options
• Certification: ISO 9001 and AS9120 certified
• Product Forms: Bar & Rod | Plate, Sheet & Strip | Tube & Pipe | Wire | Forgings & Rings | Fasteners

II. Material Standards & Specifications

*NACE MR0175/ISO 15156 compliant for sour service.*

III. Chemical Composition (wt%)

IV. Service Conditions & Material Selection Boundaries

Suitable Conditions:

1. Elevated Temperature High-Stress: Up to 704°C (1300°F) for strength-critical components
2. Aerospace Propulsion: Jet engine rotating parts requiring high fatigue/creep resistance
3. Sour Gas Service: H₂S environments per NACE MR0175
4. Cryogenic Applications: Excellent low-temperature toughness
5. Welded Assemblies: Can be welded before final aging

Typical Applications:

• Aerospace: Turbine disks, blades, shafts, rocket motor components
• Oil & Gas: Wellhead equipment, BOPs, downhole tools, sour service valves
• Energy: Gas turbine components, nuclear reactor internals
• Industrial: High-strength fasteners, springs, cryogenic storage

Selection Boundaries:

• >704°C Continuous Service: Consider Inconel 625 or 601
• Severe Aqueous Corrosion: Consider Inconel 625 or Hastelloy C-276
• Oxidation >982°C: Consider Inconel 601 or 602 CA
• Cost-Sensitive: Consider 17-4 PH or A-286

V. Manufacturing Process & Heat Treatment

Heat Treatment:

Fabrication:

• Welding: Excellent using GTAW/TIG. Use matching filler metal. Can be aged after welding.
• Hot Working: 927-1065°C (1700-1950°F)
• Machining: Requires rigid setups, positive feeds, sharp tooling

VI. Mechanical Properties

Hardness: Aged condition ~40 HRC. Contact for certified test reports.

VII. Material Comparison Guide

Procurement Recommendation:

• Choose alloy 718 for maximum strength up to 704°C in aerospace rotating components, high-pressure oil & gas tools, and sour service applications.
• Choose alloy 625 for strength + corrosion resistance across high-temperature and aqueous environments.
• Choose alloy 600 for cost-effective high-temperature service where extreme strength not required.

Request a Quote or Sample Today:

For aerospace, oil & gas, or energy applications demanding Inconel 718's exceptional high-strength performance, contact ZYTC Alloy today.

Contact us for a free sample and competitive quote. Our technical team is ready to assist with material selection and heat treatment specifications.

Contact Us:

Email:daisy@zytcsteel.com

WhatsApp/WeChat: +86 17335753350