Products Features
High-Temperature Oxidation Resistance
Forms a dense oxide film even at temperatures above 1100°C, resisting oxidation and carburization erosion, with a service life far exceeding that of stainless steel.
High-Temperature Corrosion Resistance
Shows good resistance to strongly corrosive media such as dry chlorine gas, hydrogen chloride, and hydrofluoric acid, capable of withstanding corrosion in both oxidizing and reducing environments, while also having excellent resistance to pitting corrosion and crevice corrosion.
High Stability
Maintains a stable austenitic structure at both room temperature and high temperatures, is non-magnetic, and is unlikely to undergo microstructural phase transformation after long-term service, with strong retention of dimensions and properties.
Good Processability
Possesses excellent cold and hot working, and welding properties, and can be processed into various forms such as plates, bars, tubes, and forgings to meet different equipment manufacturing requirements.
Technical Specifications
Chemical Composition
|
Element |
Standard Requirements |
Note |
|
Ni |
≥ 72.0% |
Matrix, providing corrosion resistance and high-temperature strength |
|
Cr |
14.0 - 17.0% |
Provide antioxidant and corrosion resistance capabilities |
|
Fe |
6.0 - 10.0% |
Solid solution strengthening, stable microstructure |
|
C |
≤ 0.15% |
Control carbide precipitation |
|
Mn |
≤ 1.0% |
Deoxidizer, improve hot workability |
|
Si |
≤ 0.5% |
Deoxidizer, improve antioxidant properties |
|
Cu |
≤ 0.5% |
Residual elements |
|
S |
≤ 0.015% |
Strict control to prevent hot brittleness |
Physical Properties
|
Performance |
Numeric value/range |
Test conditions |
|
Densityc |
8.47 g/cm³ |
Room temperature (20°C) |
|
Melting point |
1370 - 1425 °C |
Room temperature (20°C) |
|
Specific heat capacity |
444 J/kg·K |
20°C |
Mechanical Properties (Solution Annealed Condition, Typical Values)
|
Performance |
Typical value |
Implementation Standard |
|
Tensile strength |
≥ 550 MPa |
ASTM B168 |
|
Yield strength |
≥ 240 MPa |
ASTM B168 |
|
Elongation |
≥ 30% |
ASTM B168 |
|
Hardness |
≤ 90 HRB |
- |
High-temperature Performance
At 700°C, the tensile strength remains above approximately 350 MPa. At 900°C, the tensile strength remains above approximately 120 MPa.
Long-term usage temperature range: For oxidation/carbon penetration applications, the recommended long-term operating temperature is 700°C to 1150°C.
Maximum intermittent temperature resistance: Up to 1177°C.
Oxidation resistance: In static air at 1100°C, the oxidation rate is extremely low (typically > 0.1 mm/year).
Creep resistance: At 700-900°C and under moderate stress, it exhibits better creep resistance than most austenitic stainless steels.
Application Fields
-
Thermocouple sheaths in erosive atmospheres.
-
Production of dioxide by the chlorine gas method.
-
Vinyl chloride monomer production: resistance to chlorine gas, oxidation, and carbonization corrosion.
-
Production of organic or inorganic chlorides and fluorides: resistance to chlorine gas and fluorine gas corrosion.
-
Uranium oxidation conversion to hexafluoride: resistance to hydrogen chloride corrosion.
-
Nuclear reactors.
-
Production and use of corrosive alkali metals, especially in environments with sulfides.
-
Flask and components in heat treatment furnaces, especially in carburizing and nitriding atmospheres.
Customizable Material Forms
We support producing various basic and special shapes according to drawings or specifications.
|
Form |
 Sheets/Thin plates
|
 Bar/round steel
|
 Steel pipe / Pipe material
|
 Strip/Sheet Coil
|
 Wire/strand material
|
|---|---|---|---|---|---|
|
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 |
Special thick/thin rolling, ultra-wide plates; special surface treatment; fixed-length cutting |
Large-sized forged bars, special-shaped bars; different heat treatment conditions of various grades |
Large-diameter, thick-walled tubes; special alloy composition; tube end processing (beveling, fixed length) |
Different hardness conditions, special heat treatment, pickled surface, electrolytic polishing, coating or protective film |
Special surfaces, precision drawing |
Why Source From Us? - Trusted Engineering. Reliable Delivery.
Not just a supplier, but a material partner you can rely on 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: How many years can it be used in high-temperature environments?
Q: What is the maximum working temperature?
Q: What is the difference between it and Inconel 625?
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