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904L 1.4529 Stainless Steel Rod - Acid Alkali Resistant Round Bar

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904L 1.4529 Stainless Steel Rod - Acid Alkali Resistant Round Bar

Brand Name : Zhonggong Special Metallurgy

Model Number : 904L stainless steel

Certification : ISO Certificate

Place of Origin : China

MOQ : 100KG

Price : Price is negotiated based on the required specifications and quantity

Payment Terms : Payment Terms: Mainly T/T.. L/C,D/A,D/P,

Supply Ability : 5000 tons per month

Delivery Time : 5-8 working days, depending on the parameters required for negotiation

Packaging Details : Standard export packaging, or packaging as required

Name : Austenitic Stainless Steel

Density : 8.0g/cm³

Main components : 20Cr-24Ni-4.3Mo-1.5Cu

Different grades : 904L（N08904，,14539）

Surface : black or bright

Form Of Supply : Bar, plate, pipe, etc

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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​​

  1. ​​Chemical Processing​​
    • Sulfuric acid storage/heat exchangers
    • Organic acid scrubbers & reactors
    • Dilute sulfuric acid systems (ideal material)
  2. ​​Energy​​
    • FGD systems: absorbers, ducting & spray components
  3. ​​Marine​​
    • Seawater treatment & heat exchangers
  4. ​​Pharmaceutical​​
    • Reactors, centrifuges
  5. ​​Food Production​​
    • Fermentation tanks (soy sauce, wine, brine)
  6. ​​Industrial Equipment​​
    • Pressure vessels, papermaking machinery

Product Tags:

904L stainless steel rod

      

acid resistant round bar

      

1.4529 stainless steel bar

      
Wholesale 904L 1.4529 Stainless Steel Rod - Acid Alkali Resistant Round Bar from china suppliers

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