Inconel 600 vs Inconel 625 Round Bars
What are Inconel 600 Round Bars?
Inconel 600 round bars are high-nickel alloy bars made of nickel, chromium, and iron. The composition of this alloy gives them extremely high strength and excellent corrosion resistance in a variety of environments, making them ideal for extreme temperature applications such as aerospace engineering or nuclear power operations. Furthermore, these round bars offer superior tensile strength and oxidation resistance compared to most other alloys currently on the market. They also exhibit excellent formability, weldability, and machinability without compromising strength. Therefore, they are an ideal choice for projects that require both cost-effectiveness and high-quality results.
What is Inconel 625 Round Bar?
Inconel 625 round bar is a critical component in many high-temperature applications. This alloy, made from a nickel-chromium-based superalloy, offers excellent oxidation and corrosion resistance, making it ideal for extreme environments. Inconel 625 also exhibits excellent fatigue strength and superior mechanical properties, remaining stable even under the most demanding conditions. Furthermore, its excellent weldability makes Inconel 625 round bar an ideal choice for numerous industries, including aerospace, oil and gas extraction, and chemical equipment.
ASME SB166 Inconel 600/625 Round Bar, Wire Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Inconel 600 | 2.4816 | N06600 | NCF 600 | NA 13 | МНЖМц 28-2,5-1,5 | NC15FE11M | NiCr15Fe |
| Inconel 625 | 2.4856 | N06625 | NCF 625 | NA 21 | ХН75МБТЮ | NC22DNB4M | NiCr22Mo9Nb |
Inconel 600/625 Round Bars Specifications
Specification : ASTM B166, A479 / ASME SB166, SA479
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Inconel Round Bars: Outside Diameter in the range of 4mm to 500mm
Inconel Bright Bars : Outside Diameter in the range of 4mm to 200mm
Inconel Hex Bars : 4mm – 101.6mm
Inconel Square Bars : 3mm – 100mm
Inconel Flat Bars : 1/2" to 10" in thickness range of 1.6mm to 150mm, Custom Size Stainless Steel Flats available
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Length : 1 to 6 Meters, Custom Cut Lengths
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
Chemical Composition of Inconel 600/625 Rods
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Inconel 600 | 0.15 max | 1.00 max | 0.50 max | 0.015 max | 0.50 max | 6.00 – 10.00 | 72.00 min | 14.00 – 17.00 |
| Inconel 625 | 0.10 max | 0.50 max | 0.50 max | 0.015 max | - | 5.0 | 58.0 min | 20.0 – 23.0 |
Mechanical Properties of Alloy 600/625 Round Bars
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel 600 | 8.47 g/cm3 | 1413 °C (2580 °F) | 655 MPa, 95000 psi | 310 MPa, 45000 psi | 45 % |
| Inconel 625 | 8.4 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 705 | 42.5 % |
Inconel 600/625 Round Bar Other Types
Inconel Alloy 600/625 Square Bar
Inconel 600 Square Bar, UNS N06600 / N06625 Square Bar, DIN 2.4856 Square Rod, ASME SB 166 Inconel Alloy 600 Square Bar, Inconel 600 Polish Square Bar, Alloy 600/625 Square Rod
Inconel Alloy 600/625 Hex Bar
ASME SB166 Inconel Alloy 600 / 625 Hex Bar, DIN 2.4668 Hex Bar, UNS N06600 Hex Bar, Inconel Alloy 600 Hex Rod, Inconel Alloy 600 Polish Hex Bar, Inconel Alloy 600/625 Hex Rod
Inconel Alloy 600 Rectangular Bar
Inconel ASTM B166 600 Rectangular Bar, ASME SB166 Inconel Alloy 625 Rectangular Rod, Alloy 600 Rectangle Bar, Polish Inconel Alloy 625 Rectangular Bar Supplier
Inconel Alloy 600/625 Flat Bar
DIN 2.4851 Flat Bar, UNS N06601 Flat Bar, ASME SB 166 Inconel 600 Flat Bar, ASTM B166 625 Inconel Alloy Flat Rod, Inconel Alloy 600/625 Polish Flat Bar
Inconel Alloy 600/625 Bright Bar
ASTM B166 625 Inconel Bright Bar, Inconel Alloy UNS N06600/ N06625 Bright Bar, Alloy 600 Bright Rod, Inconel Alloy 600/625 Polish Bright Bar
Inconel Alloy 600/625 Forged Bar
UNS N06600 Forged Bar, Inconel 600 Forged Rod, ASTM B166 600 Inconel Polish Forged Bar, ASME SB166 Inconel Alloy 625 Forged Bar
Corrosion Resistance and Oxidation Resistance
Inconel 600 exhibits good corrosion resistance at high temperatures, but outperforms Inconel 625 in high-chloride environments. Inconel 625 is unaffected by chloride stress corrosion cracking and pitting, making it ideal for harsh marine applications.
In terms of oxidation resistance, Inconel 625 is superior to Inconel 600 due to its higher chromium and molybdenum content, resulting in superior performance even at extreme temperatures.
Weldability and Machinability
Inconel 625 is easier to weld and machine than Inconel 600. The latter requires specialized welding techniques and materials to prevent cracking and deformation during welding. Inconel 625 has good weldability and can be welded using various methods, such as GTAW, GMAW, and PAW.
Chemical Industry
Petrochemical Industry
Shipbuilding and Power Transmission Industry
Power Plants
Energy Industry
Pharmaceutical Processing Industry
Wastewater Treatment Projects
Synthetic Fibers
Heat Exchangers
Fluid Piping
Dairy and Food Processing
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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FAQ
Q: What are the differences between Inconel 625 and Inconel 600?
A: Inconel 625 is unaffected by chloride stress corrosion cracking and pitting, making it ideal for harsh marine environments. In terms of oxidation resistance, Inconel 625 is superior to Inconel 600 due to its higher chromium and molybdenum content, exhibiting better performance even at extreme temperatures.
Q: What are the disadvantages of Inconel 625?
A: Disadvantages: High cost: Due to its complex composition and high production costs, Inconel 625 is significantly more expensive than many other materials. Difficult to process: The toughness of Inconel 625 makes it more difficult to process, requiring specialized tools and processes.
Q: Can Inconel 625 withstand hydrochloric acid?
A: Yes, Inconel 625 can withstand hydrochloric acid concentrations up to approximately 20% at room temperature and dilute hydrochloric acid at high temperatures. However, it is not the optimal choice for high-temperature concentrated hydrochloric acid. For hydrochloric acid of various concentrations, nickel-molybdenum alloys (ASTM B622 standard) are recommended because they contain 28% molybdenum and virtually no chromium.
Q: Are Alloy 600 and Inconel 600 the same material?
A: Nickel Alloy 600, also sold under the brand name Inconel 600, is a unique nickel-chromium alloy known for its oxidation resistance at high temperatures. It has a wide range of applications, suitable for temperatures from low temperatures to high temperatures up to 2000°F (1093°C).
Q: Will Inconel 600 rust?
A: It exhibits excellent resistance to corrosion from high-purity water, and no signs of chloride stress corrosion cracking have been detected in reactor water systems.
Q: Is Inconel 600 magnetic?
A: Inconel 600 is non-magnetic, possesses excellent mechanical properties, combining high strength with good machinability and easy welding. Alloy 600 exhibits the cold-forming characteristics typically associated with chromium-nickel stainless steel.
Q: How high a temperature can Inconel 600 withstand?
A: The hot working temperature range for Inconel 600 alloy is 1600 – 2250°F (870 – 1230°C). Heavy finishing needs to be performed between 1900 – 2250°F (1040 – 1230°C), while light finishing can be performed at temperatures as low as 1600°F (870°C).
