Incoloy 27-7MO Round Bar (UNS N08027 / W.Nr. 1.4501)
Incoloy 27-7MO Round Bar is a high-alloy austenitic nickel–iron–chromium–molybdenum stainless alloy developed for exceptional resistance to pitting, crevice corrosion, and chloride-induced stress corrosion cracking. With high chromium and molybdenum content, it performs reliably in severe marine, chemical, and offshore environments where conventional stainless steels fail.
Key Features
- Outstanding resistance to pitting and crevice corrosion
- Excellent resistance to chloride stress corrosion cracking
- High strength and toughness
- Superior performance in seawater and marine atmospheres
- Good weldability and fabrication characteristics
- Stable austenitic microstructure
Equivalent Grades
| Standard |
Equivalent |
| UNS |
N08027 |
| DIN / EN |
1.4501 |
| ASTM |
Incoloy 27-7MO |
Sizes
Incoloy 27-7MO Chemical Composition
| Element |
Percentage (%) |
| Chromium (Cr) |
26.0 – 28.0 |
| Nickel (Ni) |
30.0 – 33.0 |
| Molybdenum (Mo) |
6.0 – 7.0 |
| Iron (Fe) |
Balance |
| Carbon (C) |
≤ 0.03 |
| Nitrogen (N) |
0.20 – 0.30 |
| Manganese (Mn) |
≤ 2.0 |
| Silicon (Si) |
≤ 1.0 |
UNS N08027 Mechanical Properties
| Property |
Typical Value |
| Tensile Strength |
≥ 650 MPa |
| Yield Strength (0.2%) |
≥ 300 MPa |
| Elongation |
≥ 30% |
| Hardness |
≤ 95 HRB |
Alloy 27-7MO Physical Properties
| Property |
Value |
| Density |
8.0 g/cm³ |
| Melting Range |
1350 – 1400 °C |
| Modulus of Elasticity |
195 GPa |
| Thermal Conductivity |
9.5 W/m·K |
Types of Incoloy 27-7MO Round Bar
- Hot Rolled Round Bar
- Cold Drawn Round Bar
- Forged Round Bar
- Precision Machined Bar
Applications
- Offshore and marine components
- Seawater handling systems
- Chemical processing equipment
- Heat exchangers and condensers
- Oil & gas industry components
- Desalination plants
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