Inconel 718 Round Bars
Inconel 718 Round Bars Manufacturer & Supplier in India
Inconel 718 Round Bar is a precipitation hardened nickel chromium alloy widely used in aerospace, marine, oil & gas, power generation, and chemical processing industries because of its excellent strength, oxidation resistance, and corrosion resistance at elevated temperatures. Manufactured according to ASTM B637 and UNS N07718 specifications, Alloy 718 Round Bar offers outstanding mechanical performance from cryogenic temperatures up to 1300°F. The alloy contains nickel, chromium, molybdenum, niobium, titanium, and iron, which provide superior creep rupture strength, fatigue resistance, and weldability for critical engineering applications.
Stellar Alloys Steel Pipe and Tubes is one of the leading suppliers, exporters, and stockists of Inconel 718 Round Bars in India, offering a complete range of Alloy 718 Round Bar, Inconel 718 Rod, ASTM B637 Inconel 718 Round Bar, Nickel Alloy 718 Round Bar, and UNS N07718 Round Bar in custom sizes and finishes. Our products are available in round, flat, square, forged, threaded, and hex bar forms with EN 10204 3.1 certification and third-party inspection reports. These high temperature alloy bars are manufactured with excellent dimensional accuracy and are suitable for machining, fabrication, and high-pressure industrial systems.
As a trusted Inconel 718 Round Bar Supplier in India, we supply Alloy 718 Bar and ASTM B637 Bar products in bright, polished, rough turned, and black finishes for domestic and international markets. Our corrosion resistant Alloy 718 products are widely demanded for turbine engines, heat exchangers, nuclear reactors, downhole equipment, fasteners, and cryogenic applications due to their exceptional durability and long service life under extreme operating conditions.
Table of Contents
- ASTM B637 UNS N07718 Inconel 718 Round Bar Specification
- Inconel 718 Round Bar Sizes
- Available Types of Inconel 718 Bars
- Chemical Composition of Inconel 718
- Mechanical Properties of Alloy 718 Round Bar
- Features of Inconel 718 Round Bars
- ASTM B637 UNS N07718 Round Bar Equivalent Grades
- Available Types of Inconel 718 Bars
- Surface Finish of UNS N07718 Bars
- Inconel 718 Round Bar Manufacturing Process
- Testing of ASTM B637 Inconel 718 Bars
- Advantages of Inconel 718 Round Bars
- Applications of Inconel 718 Round Bars
- Why Choose Steel Pipe and Tubes?
- Inconel 718 Round Bar Exporter
- Inconel 718 Round Bar Price
- Frequently Asked Questions
ASTM B637 UNS N07718 Inconel 718 Round Bar Specification
Specification | Details |
Material Grade | Inconel 718 |
UNS Number | N07718 |
Werkstoff Number | 2.4668 |
ASTM Standard | ASTM B637 |
ASME Standard | ASME SB637 |
AMS Standard | AMS 5662, AMS 5663, AMS 5664 |
NACE Standard | MR-01-75 |
Form | Round Bar, Flat Bar, Square Bar, Hex Bar |
Diameter | 4 mm to 500 mm |
Length | 1 Meter to 6 Meter |
Surface Finish | Bright, Black, Polished, Rough Turned, No.4 |
Condition | PH, H&T, ANN |
Manufacturing Process | Forged, Rolled |
Tolerance | H8 to H13, K9 to K12 |
Certification | EN 10204 3.1 / 3.2 |
Origin | Indian, European, Japanese |
Inconel 718 Round Bar Sizes
Product Form | Size Range |
Round Bar | 4 mm to 500 mm Dia |
Hex Bar | 18 mm to 57 mm |
Square Bar | 18 mm to 47 mm |
Flat Bar Width | 12.7 mm to 254 mm |
Flat Bar Thickness | 2 mm to 150 mm |
Custom Cut Length | Available |
Available Types of Inconel 718 Bars
Inconel 718 Round Bar
Inconel 718 Hex Bar
Inconel 718 Flat Bar
Inconel 718 Square Bar
- Inconel 718 Round Bar: Used in aerospace shafts, fasteners, and turbine components.
- Inconel 718 Hex Bar: Widely used for high-strength fasteners and machining applications.
- Inconel 718 Flat Bar: Suitable for structural and fabrication applications.
- Inconel 718 Square Bar: Used in industrial engineering and heavy-duty components.
Chemical Composition of Inconel 718
Element | Composition % |
Nickel (Ni) | 50 – 55 |
Chromium (Cr) | 17 – 21 |
Niobium (Nb) | 4.75 – 5.50 |
Molybdenum (Mo) | 2.80 – 3.30 |
Titanium (Ti) | 0.65 – 1.15 |
Aluminum (Al) | 0.20 – 0.80 |
Iron (Fe) | Balance |
Mechanical Properties of Alloy 718 Round Bar
Property | Value |
Tensile Strength | 1034 MPa |
Yield Strength | 827 MPa |
Elongation | 20% |
Hardness | 363 HB |
Features of Inconel 718 Round Bars
- Excellent oxidation resistance
- Superior high-temperature strength
- Outstanding fatigue resistance
- Excellent weldability
- Resistant to chloride stress corrosion cracking
- High creep rupture strength
- Excellent cryogenic properties
ASTM B637 UNS N07718 Round Bar Equivalent Grades
Standard | Grade |
UNS | N07718 |
WNR | 2.4668 |
AMS | AMS 5662 / AMS 5663 |
ASTM | ASTM B637 |
ASME | SB637 |
Our stainless steel round bars serve mission-critical applications across multiple industries due to their exceptional strength, corrosion resistance, and reliability in harsh environments:
Common applications include:
- Oil and Gas Industry – Downhole pump shafts, valve stems, instrumentation components, and wellhead equipment
- Chemical Processing Plants – Reactor vessel shafts, agitator components, pump impellers, and corrosion-resistant fasteners
- Marine and Offshore Structures – Propeller shafts, deck equipment, rigging hardware, and saltwater-resistant fittings
- Automotive and Mechanical Engineering – Engine components, transmission shafts, precision machined parts, and suspension elements
- Pump and Valve Manufacturing – Valve stems, pump shafts, piston rods, and high-pressure fittings
- Construction and Structural Frameworks – Architectural supports, railing systems, and load-bearing structural members
- Food Processing Equipment – Mixer shafts, conveyor components, sanitary fittings, and hygienic processing machinery
- Aerospace Components – Landing gear parts, high-strength fasteners, precision machined aircraft components
Available Types of Inconel 718 Bars
Product Type | Description |
Inconel 718 Round Bar | Used for shafts, fasteners, aerospace components |
Inconel 718 Hex Bar | Ideal for machining and bolts |
Inconel 718 Flat Bar | Used in fabrication and structural applications |
Inconel 718 Square Bar | Suitable for heavy engineering applications |
Inconel 718 Forged Bar | High strength forged applications |
Inconel 718 Bright Bar | Precision finished industrial applications |
Inconel 718 Threaded Bar | Industrial fastening systems |
Surface Finish of UNS N07718 Bars
Finish Type | Application |
Bright Finish | Precision machining |
Polished Finish | Decorative & industrial |
Rough Turned | Heavy engineering |
Black Finish | Structural applications |
No.4 Finish | Fabrication industry |
Inconel 718 Round Bar Manufacturing Process
Process | Details |
Forging | Improves grain structure |
Hot Rolling | Enhances strength and workability |
Heat Treatment | Improves mechanical performance |
Peeling | Surface refinement |
Cold Drawing | Dimensional accuracy |
Testing of ASTM B637 Inconel 718 Bars
Testing Method | Purpose |
PMI Testing | Material verification |
Microstructure Testing | Grain analysis |
Upset Testing | Ductility verification |
Radiography Testing | Internal defect inspection |
Third Party Inspection | Quality assurance |
Advantages of Inconel 718 Round Bars
- Exceptional high-temperature strength
- Excellent fatigue resistance
- Superior oxidation resistance
- High corrosion resistance
- Outstanding weldability
- Excellent creep rupture strength
- Suitable for cryogenic applications
- Resistant to chloride stress corrosion cracking
Applications of Inconel 718 Round Bars
Inconel Alloy 718 Round Bars are extensively used in:
- Aerospace industry
- Gas turbine engines
- Nuclear reactors
- Chemical processing plants
- Marine engineering
- Oil and gas industry
- Heat exchangers
- Cryogenic storage tanks
- Rocket motor components
- High-temperature fasteners
Why Choose Steel Pipe and Tubes?
Steel Pipe and Tubes is one of the leading suppliers and exporters of Inconel 718 Round Bars in India offering:
- Ready stock availability
- Competitive price per kg
- Third-party inspection
- EN 10204 3.1 certification
- Custom cutting services
- Worldwide export delivery
- Fast dispatch
- Precision machining support
Inconel 718 Round Bar Exporter
Steel Pipe and Tubes exports ASTM B637 Inconel 718 Round Bars to UAE, Saudi Arabia, Qatar, Kuwait, Oman, South Africa, USA, and European countries with complete export documentation and international quality standards.
Inconel 718 Round Bar Price
The price of Inconel 718 Round Bar depends on diameter, quantity, finish, origin, and machining requirements. Contact Steel Pipe and Tubes for the latest Alloy 718 Round Bar price per kg and bulk order discounts.
Frequently Asked Questions
Inconel 718 Round Bar is a nickel chromium alloy bar with excellent strength and corrosion resistance used in high-temperature industrial applications.
ASTM B637 is the standard specification covering nickel alloy bars, forgings, and rods including Inconel 718 material.
UNS N07718 is the material designation number for Inconel 718 alloy.
These bars are used in aerospace, marine, oil & gas, nuclear, and chemical processing industries.
Yes, Inconel 718 offers excellent weldability and post-weld strength retention.
Round bars, flat bars, square bars, hex bars, and forged bars are commonly available.
The alloy performs effectively in temperatures ranging from cryogenic levels up to approximately 1300°F.
Yes, custom-cut and machined Inconel 718 bars are available as per client requirements.