Welcome to Riyaarth Overseas!
Riyaarth OverseasRiyaarth OverseasRiyaarth Overseas

Inconel 718

Special Products

Inconel 718

Inconel 625 High-Temperature Alloy Pipe by Riyaarth Overseas
Inconel 718 is a high-strength, corrosion-resistant nickel-chromium alloy known for its exceptional mechanical properties at elevated temperatures. It is precipitation hardenable, meaning it gains strength through heat treatment, and exhibits outstanding weldability, oxidation resistance, and creep-rupture strength. Inconel 718 is widely used in aerospace, power generation, chemical processing, and marine industries due to its ability to maintain structural integrity in extreme environments.

Key Features

  • High Temperature Resistance: Maintains strength and oxidation resistance up to 700°C (1300°F).

  • Excellent Corrosion Resistance: Performs well in harsh environments, including those with acids, salts, and seawater.

  • Outstanding Strength: Offers superior tensile, fatigue, and creep resistance even after prolonged exposure to high temperatures.

  • Good Weldability: Can be welded without cracking due to its balanced composition and hardening response.

  • Long-Term Durability: Ideal for critical components where service life is essential under stress and heat.

 

Chemical Composition

Element

Composition (%)

Nickel (Ni)

50.0 – 55.0

Chromium (Cr)

17.0 – 21.0

Iron (Fe)

Balance

Niobium + Tantalum (Nb + Ta)

4.75 – 5.50

Molybdenum (Mo)

2.80 – 3.30

Titanium (Ti)

0.65 – 1.15

Aluminum (Al)

0.20 – 0.80

Cobalt (Co)

≤ 1.00

Carbon (C)

≤ 0.08

Manganese (Mn)

≤ 0.35

Silicon (Si)

≤ 0.35

Sulfur (S)

≤ 0.015

 

Mechanical Properties

Property

Value

Tensile Strength

≥ 1240 MPa

Yield Strength (0.2% Offset)

≥ 1035 MPa

Elongation

≥ 12%

Hardness

~331 HB

Operating Temperature Range

-253°C to 700°C

 

 

Applications

  • Aerospace Industry: Gas turbine engines, jet engine parts, rocket motors, and aircraft fasteners.

  • Power Generation: Turbine blades, exhaust systems, and nuclear reactor components.

  • Oil & Gas: Downhole tools, valves, and wellhead components.

  • Marine Industry: High-pressure, corrosion-resistant parts exposed to seawater.

  • Chemical Processing: Heat exchangers, reactors, and acid handling equipment.

 

Forms Available
  • Sheets & Plates: Used in high-temperature structural components and cladding applications.
  • Bars & Rods: Ideal for machining into custom components for aerospace and oil & gas sectors.
  • Pipes & Tubes: Employed in high-pressure fluid transport systems across the power and chemical industries.

Equivalent Grades

Standard

Equivalent Grade

UNS

N07718

W.Nr

2.4668

AMS

5662, 5663

ASTM

B637



Advantages

  • Exceptional mechanical properties at cryogenic and high temperatures.
  • Resists pitting, crevice corrosion, and stress-corrosion cracking.
  • High fatigue strength and creep resistance.
  • Suitable for high-stress environments requiring long-term reliability.

Surface Finish and Coatings

To enhance durability:
  • Standard finishes include polished or pickled surfaces.
  • Coatings such as epoxy or anti-corrosion layers can be applied for specific requirements.

Quality Assurance & Packaging

High-quality standards are maintained throughout the manufacturing process:
  • Certifications: Compliant with ASTM B637, AMS 5662/5663, and other relevant standards.
  • Packaging: Pipes and components are securely packaged with protective materials like wooden crates, plastic wrap, and end caps to prevent transit damage.
For high-performance Inconel 718 solutions, contact Riyaarth Overseas today for custom sizes, prompt delivery, and expert support.

FAQ's

What makes Inconel 718 suitable for aerospace applications?

Its high tensile strength, fatigue resistance, and ability to perform at elevated temperatures make it ideal for turbine and jet engine components.

How does Inconel 718 differ from Inconel 625?

Inconel 718 offers higher strength due to precipitation hardening, whereas Inconel 625 is better suited for corrosion resistance without heat treatment.

Can Inconel 718 be welded?

Yes, it has excellent weldability and can be joined using standard techniques without risk of cracking.

Products

Industry We Serve

Call Now Button