Products Features
Exceptional resistance to pitting and crevice corrosion.
The high molybdenum (6.0-7.0%) and nitrogen (0.15-0.25%) design results in a pitting resistance equivalent number (PREN) as high as 43-45, providing far superior localized corrosion resistance in chloride, halide, and acidic environments compared to 316L, 317L, and even most 6Mo alloys.
Excellent resistance to chloride stress corrosion cracking.
The high nickel content (24-26%) effectively reduces the susceptibility of austenitic stainless steel to chloride stress corrosion cracking, providing stable performance in marine environments, saltwater cooling systems, and chemical processes, outperforming 304, 316, and duplex stainless steels.
Excellent resistance to corrosion by reducing and oxidizing acids.
It exhibits outstanding corrosion resistance in media such as sulfuric acid, phosphoric acid, nitric acid, formic acid, and acetic acid, and also performs well with mixed acids (e.g., sulfuric acid + chloride). It is suitable for chemical reactors, storage tanks, and piping systems.
Good machining and welding properties.
It can be cold or hot formed using conventional austenitic stainless steel processing techniques, and it has good welding performance (suitable for GTAW, GMAW, SMAW, etc.). No special post-weld heat treatment is required, making it convenient for manufacturing complex equipment.
Technical Specifications
Chemical Composition
|
Element |
Standard Requirements |
Notes |
|
Ni |
24.0 – 26.0% |
Matrix elements that provide high-temperature stability and corrosion resistance |
|
Cr |
19.0 – 21.0% |
Provide antioxidant and corrosion resistance capabilities |
|
Fe |
remaining quantity |
Base element |
|
Mo |
6.0 – 7.0% |
Significantly improve resistance to pitting and crevice corrosion |
|
Cu |
0.5 – 1.5% |
Enhance resistance to corrosion by reducing acids (such as sulfuric acid) |
|
N |
0.15 – 0.25% |
Strengthen the austenitic structure to improve strength and pitting corrosion resistance |
|
C |
≤ 0.020% |
Strict control to prevent intergranular corrosion |
|
Mn |
≤ 2.0% |
Deoxidizer, improve hot working properties |
|
Si |
≤ 0.5% |
Deoxidizer |
|
P |
≤ 0.030% |
Impurity elements |
|
S |
≤ 0.010% |
Prevent hot brittleness |
Physical Properties
|
Property |
Value/Range |
Test Conditions |
|
Density |
8.1g/cm³ |
Room temperature (20°C) |
|
Melting Point |
1320 - 1390°C |
- |
|
Coefficient of Thermal Expansion (20-100°C) |
15.4 × 10⁻⁶ /K |
- |
Mechanical Properties (Annealed Condition, Typical Values)
|
Property |
Typical Value |
Specification |
|
Tensile Strength |
≥ 650 MPa |
ASTM B625 / B649 |
|
Yield Strength |
≥ 300 MPa |
ASTM B625 / B649 |
|
Elongation |
≥ 35% |
ASTM B625 / B649 |
|
Hardness |
≤ 100 HRB |
- |
High-temperature performance
It exhibits good antioxidant capability in oxidizing atmospheres below 1000°C, but this alloy is primarily designed for medium- and low-temperature corrosion environments (long-term use at ≤ 450°C).
Pitting Resistance Equivalent (PREN): PREN = %Cr + 3.3×%Mo + 16×%N ≈ 43-45, which is much higher than that of 316L (approximately 25) and 904L (approximately 35).
Critical Pitting Temperature (CPT): In a 10% FeCl3·6H2O solution, the CPT is ≥ 65°C, which is superior to that of 254SMO and 904L.
Applicable Media:
Chloride-containing seawater, brine, and brines
Sulfuric acid, phosphoric acid, nitric acid, formic acid, acetic acid
Wet flue gas desulfurization (FGD) slurry
Oxidizing-reducing mixed acids
Paper pulp bleaching solutions (chlorine, chlorine dioxide)
High-temperature and high-pressure water (secondary circuit of nuclear power plants)
INCOLOY 926 is specifically designed for harsh corrosive environments at moderate to low temperatures and is recommended for use in the following areas:
Application Fields
-
Marine Engineering: Seawater cooling pipes, heat exchangers, pumps, valves, and shipboard desulfurization towers.
-
Flue Gas Desulfurization (FGD): Absorption towers, spray pipes, mist eliminators, and agitators.
-
Chemical Processing: Acid washing equipment, reactors, and storage tanks for sulfuric acid, phosphoric acid, nitric acid, acetic acid, and other acids.
-
Paper Industry: Bleaching towers, chlorine dioxide bleaching equipment, and washers.
-
Pharmaceuticals and Food: Equipment for processing organic acids (such as citric acid and lactic acid).
-
Oil and Gas: Pipelines and platform equipment for sour gas fields containing H₂S, CO₂, and Cl⁻.
-
Nuclear Power: Feedwater heaters and condenser tubes in the secondary circuit of the nuclear island.
-
Environmental Equipment: Flue gas purification from waste incineration and evaporators for wastewater treatment.
-
Seawater Desalination: High-pressure pipes in multi-stage flash and reverse osmosis systems.
-
Salt Production and Salt Chemicals: Evaporators, crystallizers, and salt slurry pumps.
Delivery and Customization
We offer flexible and reliable supply chain solutions to ensure you receive INCOLOY 926 materials that perfectly match your project requirements.
|
Form |
 Sheet/Plate
|
 Bar/Rod
|
 Seamless Pipe
|
 Strip/Sheet Coil
|
 Wire/Wire Rod
|
|---|---|---|---|---|---|
|
Conventional Range |
Thickness: 0.5 - 100 mm |
Diameter Φ6-500mm |
Outer diameter Φ10-300mm |
Thickness: 0.1 – 3.0 mm |
Diameter Φ0.5-10mm |
|
Customization Capability |
Special thick/thin rolling, ultra-wide plates; special surface treatment, fixed-length cutting |
Large-sized forged bars (up to Φ800 mm), special-shaped bars, and various heat treatment conditions |
Large-diameter thick-walled pipes, special alloy composition; Pipe end processing (beveling, fixed length) |
Different hardness conditions, special heat treatments (stabilization treatment, grain size control), acid-washed surfaces, electrolytic polishing, coatings, or special protective films |
Special surface treatment, precision drawing |
Why Choose Us? - Reliable engineering technology. Dependable delivery.
We are not just a supplier, but a trusted materials partner for you in China.
Vertically Integrated Production
Own 20,000㎡ facility with 10+ automated lines (8,000+ tons/year). In-house tooling & die center enables rapid customization and effective cost control - no middleman markup.
Strict Quality Control at Every Stage
Full traceability across key QC checkpoints throughout production. 100% compliant with ASTM/ASME, EN, and GB standards. Material test reports available with every shipment.
Reliable Delivery & Export Packaging
10+ years exporting to Europe, North America, Southeast Asia & Middle East with waterproof and anti-rust protection, combined with flexible shipping options ensures safe and on-time arrival.
Sample Validation Before Mass Production
We provide free samples for quality verification, allowing you to place bulk orders only after approval. We ensure consistency from sample to mass production by accurate dimensional measurement and transparent manufacturing.
FAQ
Q: What are the main advantages of INCOLOY 926?
Q: What heat treatment is required for INCOLOY 926?
Q: What is the maximum usage temperature?
Q: What is the difference between it and INCOLOY 904L?
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