Inconel 625 Round Bar (UNS N06625)
Inconel 625 Round Bar is a nickel–chromium–molybdenum alloy strengthened primarily by solid-solution hardening, offering exceptional corrosion resistance, high strength, and excellent fatigue and creep resistance. The addition of molybdenum and niobium provides outstanding resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking, making it ideal for severe environments.
Inconel 625 Round Bar (also searched as Alloy 625 Round Bar) performs reliably over a wide temperature range, from cryogenic conditions up to 980°C, and maintains excellent mechanical properties without the need for precipitation hardening. Its superior resistance to oxidation and chemical attack makes it one of the most widely used nickel alloys in marine, aerospace, oil & gas, and chemical processing industries.
Key Features
- Excellent resistance to pitting and crevice corrosion
- Outstanding resistance to chloride stress corrosion cracking
- High tensile strength without heat treatment
- Excellent fatigue and thermal fatigue strength
- Good weldability and fabrication characteristics
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N06625 |
| DIN | 2.4856 |
| EN | NiCr22Mo9Nb |
| JIS | NW 6625 |
Sizes
| Diameter Range | Length |
|---|---|
| 6 mm – 300 mm | 3 m, 6 m, Cut to Length |
| 1/4” – 12” | As per requirement |
Inconel 625 Chemical Composition
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 58.0 min |
| Chromium (Cr) | 20.0 – 23.0 |
| Molybdenum (Mo) | 8.0 – 10.0 |
| Niobium + Tantalum (Nb+Ta) | 3.15 – 4.15 |
| Iron (Fe) | ≤ 5.0 |
| Carbon (C) | ≤ 0.10 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.50 |
UNS N06625 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 827 MPa |
| Yield Strength | ≥ 414 MPa |
| Elongation | ≥ 30% |
| Hardness | ~200 HB |
Alloy 625 Round Bar Physical Properties
| Property | Value |
|---|---|
| Density | 8.44 g/cm³ |
| Melting Range | 1290 – 1350°C |
| Thermal Conductivity | ~9.8 W/m·K |
| Electrical Resistivity | ~1.29 µΩ·m |
Types of Inconel 625 Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Annealed Round Bar
- Bright / Polished Round Bar
- Forged Round Bar
- Cut-to-Length Round Bar
Applications
- Offshore and subsea oil & gas equipment
- Marine engineering components
- Aerospace engine and structural parts
- Chemical processing equipment
- Heat exchangers and pressure vessels
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