904L 1.4529 Stainless Steel Rod - Acid Alkali Resistant Round Bar
Price:
Price is negotiated based on the required specifications and quantity
MOQ:
100KG
Delivery Time:
5-8 working days, depending on the parameters required for negotiation
Brand:
Zhonggong Special Metallurgy
Product Description
904L 1.4529 Stainless Steel Rod - Acid Alkali Resistant Round Bar
Product Attributes
| Attribute | Value |
|---|---|
| Name | Austenitic Stainless Steel |
| Density | 8.0g/cm³ |
| Main components | 20Cr-24Ni-4.3Mo-1.5Cu |
| Different grades | 904L（N08904，1.4539） |
| Surface | black or bright |
| Form Of Supply | Bar, plate, pipe, etc |
Product Description
904L (1.4529/UNS N08904) Stainless Steel Round Bar Acid/alkali-resistant • High-temperature performance
Core Composition (% weight)
| Element | Min | Max | Element | Min | Max |
|---|---|---|---|---|---|
| C | - | 0.02 | Mo | 4.00 | 5.00 |
| Cr | 19.00 | 23.00 | Cu | 1.00 | 2.00 |
| Ni | 23.00 | 28.00 | Si | - | 1.00 |
| Mn | - | 2.00 | P | - | 0.045 |
| S | - | 0.035 | Fe | Balance |
Superior Corrosion Resistance
- Non-oxidizing Acids:
- ✓ Sulfuric acid (all conc. ≤70°C)
- ✓ Acetic acid (any conc./temp. at atm. pressure)
- ✓ Formic-phosphoric acids and mixed organic acids
- Chloride Media:
- ✓ Pitting/crevice corrosion resistance
- ✓ Stress corrosion cracking (SCC) resistance
Critical Properties
- Low carbon (≤0.02%) prevents carbide precipitation
- High Ni/Mo/Cu content enables self-passivation
- "Super austenitic" classification (EN 1.4529 / UNS N08904)
Metallurgical Structure
Fully austenitic microstructure with reduced ferrite/alpha-phase precipitation sensitivity vs. standard high-Mo austenitic steels.
Physical & Mechanical Properties
| Property | Value |
|---|---|
| Density | 8.0 g/cm³ |
| Tensile Strength | ≥520 MPa |
| Elongation | ≥35% |
Corrosion Performance
Ultra-low carbon (≤0.020%): Eliminates carbide precipitation during HT/welding, preventing intergranular corrosion
High Cr-Ni-Mo-Cu content: Enables self-passivation in reducing environments (H₂SO₄, HCOOH)
Critical media performance:
- Sulfuric acid: 0-98% up to 40°C
- Phosphoric acid: 0-85% concentration
- Hydrochloric acid: Limited to 1-2% (outperforms conventional SS)
- Nitric acid: Lower resistance than Mo-free high-alloy steels
- Chloride solutions: Superior pitting/crevice corrosion resistance
Stress corrosion cracking (SCC) resistance:
- ✓ Chloride solutions (>60°C)
- ✓ Concentrated hydroxides
- ✓ H₂S environments
Industrial Applications
- Chemical Processing
- Sulfuric acid storage/heat exchangers
- Organic acid scrubbers & reactors
- Dilute sulfuric acid systems (ideal material)
- Energy
- FGD systems: absorbers, ducting & spray components
- Marine
- Seawater treatment & heat exchangers
- Pharmaceutical
- Reactors, centrifuges
- Food Production
- Fermentation tanks (soy sauce, wine, brine)
- Industrial Equipment
- Pressure vessels, papermaking machinery
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Jiangsu Zhonggongte Metallurgical Technology Co., Ltd.
Location
New South Stainless Steel Trading Market, Fangcheng Avenue, Wuxi City, Jiangsu Province, 12-101.
Contact Person
John zhou