What are Inconel 600, 601, 625, and 718 Round Bars?

Inconel 600, 601, 625, and 718 Round Bars are solid cylindrical bars manufactured from nickel-based superalloys. These materials offer exceptional resistance to high temperatures, oxidation, corrosion, and extreme mechanical stress, retaining strength and structural integrity at elevated temperatures. They are widely used in gas turbines, aerospace components, heat exchangers, nuclear reactors, chemical processing equipment, and high-pressure systems.

What is the difference between Inconel 600, 601, 625, and 718?

Inconel 600 offers good oxidation resistance up to 815°C (1500°F) with excellent corrosion resistance. Inconel 601 provides enhanced oxidation resistance up to 1040°C (1900°F) with improved carburization protection. Inconel 625 offers outstanding fatigue strength and corrosion resistance up to 980°C (1800°F). Inconel 718 is a precipitation-hardening alloy offering exceptional high-temperature strength up to 704°C (1300°F), widely used in aerospace for turbine components. Each grade is selected based on specific temperature, strength, and corrosion resistance requirements.

When should I choose Inconel Round Bars?

Choose Inconel Round Bars when high temperature strength is required, excellent oxidation and corrosion resistance is essential, components face extreme pressure or stress, performance in harsh environments is critical, and long service life at elevated temperatures is needed. Choose bright or machined bars when tight dimensional tolerances are required, smooth surface finish is critical, precision CNC machining is involved, and high-performance rotating or threaded parts are used in aerospace and turbine assemblies.

What are the applications of Inconel Round Bars?

These round bars are used in Aerospace for engine components, fasteners, and turbine shafts; in Oil & Gas for heat exchangers, valves, and high-pressure equipment; and in Power & Nuclear for reactor components and steam generators requiring extreme temperature resistance, corrosion resistance, and long service life.

What industries use Inconel Round Bars?

Inconel alloys are widely selected for Aerospace Industry for high-temperature and high-stress environments; Oil & Gas Industry for corrosive and high-pressure systems; and Power & Nuclear for extreme heat and radiation environments where exceptional strength, oxidation resistance, and long-term reliability are critical.

What is the typical tensile strength of Inconel Round Bars?

Inconel 600 offers a tensile strength of 550 MPa (80 ksi) and yield strength of 210 MPa (30 ksi). Inconel 601 provides similar strength with enhanced oxidation resistance. Inconel 625 offers tensile strength of 830 MPa (120 ksi) and yield strength of 415 MPa (60 ksi). Inconel 718 provides exceptional strength with tensile strength of 1035 MPa (150 ksi) and yield strength of 760 MPa (110 ksi) after precipitation hardening, making it suitable for the most demanding high-temperature applications.

What is the difference between Inconel and Incoloy?

Inconel is a nickel-chromium based superalloy with exceptional high-temperature strength and oxidation resistance. Incoloy is a nickel-iron-chromium alloy designed for high-temperature applications with good strength and stability. Inconel generally offers higher nickel content and superior high-temperature performance, while Incoloy provides a cost-effective alternative with excellent metallurgical stability during long-term service.

What manufacturing standards do you follow for Inconel Round Bars?

Our Inconel Round Bars are manufactured in compliance with ASTM B564 / ASME SB564 for material specifications, ASTM B880 for general requirements, and AMS 5665 / AMS 5666 for aerospace grades. They are available in various sizes with full material traceability, PMI testing, and ISO 9001:2015 certification.

Why choose Ratnadeep Steel for Inconel Round Bars?

Ratnadeep Steel & Engg. Co. is a renowned manufacturer, exporter, and supplier based in Mumbai, India. We offer factory pricing, top quality, custom sizes, and timely delivery. Our Inconel round bars are precision-engineered with rigorous quality inspection, making us a trusted global supplier. We provide ISO 9001:2015 certified products with full material traceability.

Inconel 600/601/625/718 Round Bars & Rods

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Inconel 600 / 601 / 625 / 718 Explained

Inconel 600, 601, 625, and 718 are high-performance nickel-chromium-based superalloys. To begin with, they are specifically engineered for exceptional strength, oxidation resistance, and corrosion resistance at elevated temperatures. Furthermore, these grades maintain excellent mechanical properties under extreme heat, pressure, and chemically aggressive environments — where conventional materials simply cannot survive.

Why do engineers and procurement leaders choose Inconel for mission-critical applications? First and foremost, these alloys offer outstanding resistance to oxidation, carburization, chloride stress corrosion cracking, and creep. In addition, each grade delivers unique advantages — Inconel 601 provides superior oxidation resistance, Inconel 625 offers exceptional fatigue strength, and Inconel 718 delivers high creep-rupture strength at elevated temperatures. Moreover, their combination of durability and reliability ensures long service life even in the most demanding conditions.

Consequently, Inconel 600 / 601 / 625 / 718 are widely used in aerospace components, gas turbines, and heat exchangers. Furthermore, they are also trusted in nuclear reactors, chemical processing equipment, and high-temperature industrial applications. Equally important, their exceptional performance under extreme conditions makes them the preferred choice for industries where failure is not an option — and where reliability, durability, and long service life are critical.

Need premium Inconel round bars for your most demanding application? Contact our technical team today — we’ll help you select the right grade (600, 601, 625, or 718) and specifications for your requirements, and provide a competitive quote tailored to your needs.

Other Types of Inconel Alloy 600 / 601 / 625 / 718 Bars

View Inconel 600 / 601 / 625 / 718 Square Bar

Inconel Alloy 600 / 601 / 625 / 718 Square Bar

Inconel alloy square bars for high-temperature applications
Grades include UNS N06600, N06601, N06625, N07718
Manufactured as per ASTM B166 and ASME SB166
Excellent resistance to oxidation and corrosion

View Inconel 600 / 601 / 625 / 718 Hex Bar

Inconel Alloy 600 / 601 / 625 / 718 Hex Bar

Hexagonal Inconel bars for extreme service conditions
Produced under ASTM B166 Inconel alloy specifications
Available in polished and bright drawn finishes
Used in aerospace, thermal, and chemical equipment

View Inconel 600 / 601 / 625 / 718 Rectangular Bar

Inconel Alloy 600 / 601 / 625 / 718 Rectangular Bar

Rectangular bars designed for high heat and pressure
Manufactured to ASTM B166 / ASME SB166 standards
Grades: Inconel 600 / 601 / 625 / 718
Ideal for furnace, reactor, and structural applications

View Inconel 600 / 601 / 625 / 718 Flat Bar

Inconel Alloy 600 / 601 / 625 / 718 Flat Bar

Inconel alloy flat bars with excellent thermal stability
Complies with ASTM B166 and ASME SB166
Supplied in hot rolled and polished condition
Used in heat exchangers and chemical processing

View Inconel 600 / 601 / 625 / 718 Bright Bar

Inconel Alloy 600 / 601 / 625 / 718 Bright Bar

Bright drawn Inconel bars with smooth surface finish
Ideal for precision machining and aerospace parts
Produced as per ASTM B166 specifications
Ensures dimensional accuracy and consistency

View Inconel 600 / 601 / 625 / 718 Forged Bar

Inconel Alloy 600 / 601 / 625 / 718 Forged Bar

Forged Inconel bars for extreme load and temperature
Outstanding strength and creep resistance
Material grades: Inconel 600 / 601 / 625 / 718
Widely used in aerospace, power, and petrochemical industries

600/601/625/718 INCONEL ROUND BAR EQUIVALENT GRADES

STANDARD	UNS	WERKSTOFF NR.	AFNOR	GOST	OR	BS	JIS	EN
Inconel 600	N06600	2.4816	NC15Fe11M	MHXMu 28-2,5-1,5	ЭИ868	NA13	NCF 600	NiCr15Fe
Inconel 601	N06601	2.4851	NC23FeA	XH60BT	ЭИ868	NA49	NCF 601	NiCr23Fe
Inconel 625	N06625	2.4856	NC22DNB4M	XH75MBTЮ	ЭИ602	NA21	NCF 625	NiCr22Mo9Nb
Inconel 718	N07718	2.4668	–	–	–	–	NCF 718	–

SPECIFICATION OF INCONEL 600/601/625/718 ROUND BAR

Standard	ASTM B166 / ASME SB166
Dimension Standard	EN, DIN, JIS, ASTM, BS, ASME, AISI
Size	14 mm – 300 mm
Length	50 mm to 6000 mm (Custom Cut)
Form	Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging

CHEMICAL COMPOSITION OF INCONEL 600/601/625/718 ROUND BAR

Grade	Ni	Fe	C	Mn	Si	Cu	Cr	S	Mo	Co	Al	Ti	Nb
600	72.0 min	6.0–10.0	0.15 max	1.0 max	0.50 max	0.50 max	14.0–17.0	0.015 max	–	–	–	–	–
601	58.0–63.0	Balance	0.10 max	1.0 max	0.50 max	1.0 max	21.0–25.0	0.015 max	–	–	1.0–1.7	–	–
625	58.0 min	5.0 max	0.10 max	0.50 max	0.50 max	0.50 max	20.0–23.0	0.015 max	8.0–10.0	1.0 max	0.40 max	0.40 max	3.15–4.15
718	50.0–55.0	Balance	0.08 max	0.35 max	0.35 max	0.30 max	17.0–21.0	0.015 max	2.8–3.3	1.0 max	0.20–0.80	0.65–1.15	4.75–5.50

MECHANICAL PROPERTIES OF INCONEL ROUND BAR

Grade	Tensile Strength (psi)	Yield Strength 0.2% (psi)	Elongation (%)
600	95,000	45,000	40
601	80,000	30,000	35

MECHANICAL PROPERTIES OF INCONEL 625 (AT TEMPERATURE)

Temp (°F)	Tensile (psi)	Yield 0.2% (psi)	Elongation (%)
70	144,000	84,000	44
400	134,000	66,000	45
600	132,000	63,000	42.5
800	131,500	61,000	45
1000	130,000	60,500	48
1200	119,000	60,000	34
1400	78,000	58,500	59
1600	40,000	39,000	117

MECHANICAL PROPERTIES OF INCONEL 625 / 718

Grade	Tensile Strength	Yield Strength (0.2%)	Elongation
625	135,000 psi (930 MPa)	75,000 psi (517 MPa)	42.5%
718	135,000 psi (930 MPa)	70,000 psi (482 MPa)	45%

💡 Practical Difference in Use

Use Inconel 600 / 601 / 625 / 718 Round Bars when: exceptional resistance to high temperatures, oxidation, corrosion, and extreme mechanical stress is required. Inconel alloys are nickel-based superalloys known for outstanding performance in severe environments, retaining strength and structural integrity at elevated temperatures. → Example: gas turbines, aerospace components, heat exchangers, nuclear reactors, chemical processing equipment, and high-pressure systems.

Bright Finished / Machined Inconel Round Bars when: high dimensional accuracy, superior surface finish, and precision machining are essential. Bright drawn or ground Inconel bars improve machinability and consistency while maintaining excellent strength and corrosion resistance. → Example: turbine shafts, aerospace fasteners, valve stems, precision engine components, and CNC-machined parts.

Applications of Inconel 600 / 601 / 625 / 718 Round Bars

Inconel round bars are extensively used in industries where extreme temperature resistance, corrosion resistance, and long service life are critical.

Aerospace: Engine components, fasteners, turbine shafts.
Oil & Gas: Heat exchangers, valves, high-pressure equipment.
Power & Nuclear: Reactor components, steam generators.

When to Choose Inconel 600 / 601 / 625 / 718 Round Bars?

The selection depends on operating temperature, corrosion severity, mechanical stress, and fabrication requirements.

Choose Inconel Round Bars when:

High temperature strength is required
Excellent oxidation and corrosion resistance is essential
Components face extreme pressure or stress
Performance in harsh environments is critical
Long service life at elevated temperatures is needed
Used in aerospace, power, or oil & gas systems

Bright / Machined Inconel Round Bars are preferred when:

Tight dimensional tolerances are required
Smooth surface finish is critical
Precision CNC machining is involved
Uniform mechanical properties are needed
High-performance rotating or threaded parts are used
Applied in aerospace and turbine assemblies

Industries That Use Inconel 600 / 601 / 625 / 718 Round Bars

Inconel alloys are widely selected for applications requiring extreme reliability under heat, pressure, and corrosive conditions.

Aerospace Industry

Used in high-temperature and high-stress environments.

Uses

Turbine engines, fasteners, shafts.

Why Inconel?

Exceptional strength and oxidation resistance at elevated temperatures.

Oil & Gas Industry

Used in corrosive and high-pressure systems.

Uses

Valves, heat exchangers, pressure components.

Why Inconel?

Superior corrosion resistance and mechanical stability.

Power & Nuclear

Used in extreme heat and radiation environments.

Uses

Reactor components, steam generators.

Why Inconel?

Excellent creep resistance and long-term reliability.

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Looking for high-quality Inconel 600 / 601 / 625 / 718 Round Bars & Rods? Fully compliant with ASTM B166, B446, B637 and ASME SB166, SB446, SB637 specifications. Get in touch with us today.