ASTM B446 UNS N06625 Round Bar Manufacturer and exporter
We are a professional and reliable manufacturer and exporter of ASTM B446 UNS N06625 Round Bars, also known as Inconel® 625. These round bars are ideal for critical applications requiring exceptional corrosion resistance, high strength, and performance at elevated temperatures.
N06625 round bar can be used as the start material to produce N06625 Stud bolt and N06625 Forged flanges and Forged fittings.
What is N06625 Round Bar?
A round bar is a long, cylindrical metal bar with a circular cross-section, commonly used in manufacturing, machining, and structural applications. It is typically supplied in straight lengths and comes in a wide range of diameters and materials.
About N06625 Material
INCONEL® nickel-chromium alloy 625 (UNS N06625/W.Nr. 2.4856) is a nickel-chromium-molybdenum-niobium alloy with reduced carbon content.
In addition, NO6625 (Inconel625) provides excellent resistance to pitting corrosion, crevice and intergranular corrosion, as well as alkaline solutions and organic and inorganic acids such as nitric, phosphoric acid, sulfuric acid and hydrochloric acid.
NO6625 (Inconel625) also has good high-temperature strength and is insensitive to chlorine-induced stress corrosion cracking
Inconel 625 alloy is a solution-strengthened nickel-based deformed superalloy with molybdenum and niobium as the main strengthening elements, which has excellent corrosion resistance and oxidation resistance, good tensile properties and fatigue properties from low temperature to 980°C, and is resistant to stress corrosion in salt spray atmosphere.
ASTM B446 Inconel 625 round bar
ASTM B446 covers the requirements for hot-finished and cold-worked nickel-based alloy round bars, specifically Inconel 625 (UNS N06625).
Chemical compostion of Inconel 625 according to ASTM B446
| % | Ni | Cr | Mo | Nb+Ta | Fe | Al | Ti | C | Mn | Si | Co | P | S |
| MIN | 58 | 20 | 8 | 3.15 | – | – | – | – | – | – | – | – | – |
| MAX | – | 23 | 10 | 4.15 | 5 | 0.4 | 0.4 | 0.1 | 0.5 | 0.5 | 1 | 0.015 | 0.015 |
Mechanical Property of N06625 round bar under ASTM B446
Condition for hot worked N06625 rod and bar and cold worked rod
| Diameter or Distance Between Parallel Surfaces, in. (mm) | Tensile Strength min, ksi (MPa) | Yield Strength (0.2 % offset), min, ksi (MPa) | Elongation in 2 in. or 50 mm or 4D, min, % | Material & Condition |
| UNS N06625 Grade 1 (Annealed) | ||||
| Up to 4 (102), incl | 120 | 60 | 30 | |
| Over 4 (102) to 10 (254), incl | 110 | 50 | 25 | |
| UNS N06625 Grade 2 (Solution Annealed) | ||||
| All sizes | 100 | 40 | 30 |
ASTM B446 Inconel 625 (UNS N06625). hot-finished and cold-worked nickel-based alloy round bars
Round Bar Available Sizes
- Round Bar Diameter: 6mm – 300mm
- Length: Standard 3m, 6m, or custom-cut lengths
- Surface Finish: Black, Bright, Polished,
- Manufacturing Process: Hot Rolled, Cold Drawn, Forged
Why Inconel 625?
Character of N06625
Because Inconel 625 alloy still has high mechanical properties and good corrosion resistance and oxidation resistance when working at high temperatures of 600~900 °C, it is widely used in the piping system of gas turbine engines, nuclear power equipment, chemical plant hardware, and seawater special equipment, and is a manufacturing material for industrial hot-end components such as aviation, aerospace, nuclear energy, petroleum, and chemical industry.
High Temperature Strength: Inconel 625 alloy exhibits excellent strength and toughness in high temperature environments, making it suitable for high temperature and high pressure industrial applications.
Corrosion Resistance: Inconel 625 alloy exhibits excellent corrosion resistance to a wide range of corrosive media, including acids, alkalis, salt water, seawater, and oxidizing gases.
Oxidation resistance: Alloy 625 can form a dense oxide layer, which effectively prevents oxygen from penetrating into the inside of the alloy, thereby protecting the matrix material from oxidative damage.
Resistance to stress corrosion cracking: Inconel 625 alloy is resistant to stress corrosion cracking and is suitable for use in stress-affected high-temperature environments.
Creep resistance: Inconel 625 alloy exhibits good creep resistance at high temperatures and stresses, making it more reliable in high-temperature applications
Applications of N06625 Round Bars
- Marine components & seawater piping
- Heat exchangers & chemical reactors
- Jet engine exhausts and turbine parts
- Offshore oil rigs & riser systems
- Nuclear fuel processing
- Acetic acid & sulfuric acid processing plants
- Raw material to produce N06625 spare parts
Advantages of our Inconel 625 Round Bars
- 100% PMI and ultrasonic tested (UT/ET available)
- ISO 9001:2015 certified production
- Custom sizes, cut-to-length, and machining services
- Short delivery time and global shipping
- Third-party inspection (TPI) accepted: SGS, BV, TUV
- EN 10204 3.1 Mill Test Certificate
- ASTM B446 compliance and heat treatment report
- NACE MR0175 / ISO 15156
