Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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High-Strength Incoloy 925 Rod for Corrosive Environments
Incoloy 925 (UNS N09925) is a precipitation-hardenable nickel-iron-chromium alloy enriched with molybdenum, copper, titanium, and aluminum. This unique composition endows it with exceptional strength and outstanding resistance to a wide range of corrosive environments, including those containing sulfuric and phosphoric acids, seawater, and other chloride-rich media. Its high nickel content offers protection against chloride-ion stress-corrosion cracking, while the combination of molybdenum and copper provides resistance to reducing chemicals. The alloy's chromium content ensures resistance to oxidizing environments, making it ideal for applications in chemical processing, marine engineering, and oil and gas industries.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 42.0 – 46.0 |
| Chromium (Cr) | 19.5 – 22.5 |
| Iron (Fe) | ≥ 22.0 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Copper (Cu) | 1.5 – 3.0 |
| Titanium (Ti) | 1.9 – 2.4 |
| Aluminum (Al) | 0.1 – 0.5 |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.5 max |
| Niobium (Nb) | 0.5 max |
| Carbon (C) | 0.03 max |
| Sulfur (S) | 0.03 max |
| Property | Value |
|---|---|
| Tensile Strength | 965 MPa (140 KSI) |
| Yield Strength (0.2% Offset) | 758 MPa (110 KSI) |
| Elongation | 20% min |
| Hardness | 26–38 HRC |
| Hardness Rockwell C | 26-38 |
| Property | Value |
|---|---|
| Density | 8.08 g/cm³ |
| Melting Range | 1311–1366 °C |
| Electrical Resistivity | 1.17 μΩ·m |
| Permeability at 200 oersteds (15.9 kA/m) | 1.001 |
UNS: N09925
ASTM: B637
NACE: MR0175 / ISO 15156
Incoloy 925 rods are extensively used in:
Oil and gas production, including sour gas environments
Marine engineering for components exposed to seawater
Chemical processing equipment handling corrosive substances
High-strength fasteners and structural components
Q1: What are the primary advantages of Incoloy 925?
A1: Incoloy 925 offers high strength, excellent resistance to a wide range of corrosive environments, and good weldability, making it suitable for demanding applications in various industries.
Q2: Can Incoloy 925 be welded?
A2: Yes, Incoloy 925 can be welded using conventional welding methods. However, preheating and post-weld heat treatment may be necessary to minimize the risk of cracking.
Q3: What are the typical applications of Incoloy 925 rods?
A3: Typical applications include components in oil and gas production, marine engineering, chemical processing equipment, and high-strength fasteners