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Quality Acid Resistant 904L Stainless Steel Tubing High Molybdenum factory
Quality Acid Resistant 904L Stainless Steel Tubing High Molybdenum factory

Acid Resistant 904L Stainless Steel Tubing High Molybdenum

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Acid Resistant 904L Stainless Steel Tubing
Product Summary
The Acid-Resistant Stainless Steel Tubing is specifically engineered to withstand highly aggressive acidic environments, including sulfuric, hydrochloric, nitric, phosphoric, and organic acids. Manufactured from high-performance austenitic and duplex stainless steel grades with elevated chromium, ...

Product Details

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Acid Resistant 904L Stainless Steel Tubing

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904L Stainless Steel Tubing High Molybdenum
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

The Acid-Resistant Stainless Steel Tubing is specifically engineered to withstand highly aggressive acidic environments, including sulfuric, hydrochloric, nitric, phosphoric, and organic acids. Manufactured from high-performance austenitic and duplex stainless steel grades with elevated chromium, nickel, and molybdenum content, this tubing provides exceptional resistance to general corrosion, pitting, and intergranular attack. Its seamless construction ensures uniform wall thickness and eliminates weld-related vulnerabilities, making it the reliable choice for acid handling systems in chemical processing, mining, and industrial applications.

Product Specifications
Parameter Details
Standards ASTM A269, A213, A312; EN 10216-5; ASME SA213
Available Grades 316L, 317L, 904L, 254SMO, Alloy 20, Duplex 2205, Super Duplex 2507
Outer Diameter 3 mm – 219 mm
Wall Thickness 0.5 mm – 12 mm
Length Fixed lengths 3m / 6m, or custom lengths upon request
Manufacturing Process Seamless – Cold drawn / Cold rolled
Surface Finish Annealed, pickled, passivated, polished
End Finish Plain ends, beveled ends, or threaded
Chemical Composition (Typical Values, %)
Grade Cr Ni Mo Cu N PREN*
316L 16.0-18.0 10.0-14.0 2.0-3.0 – – 24-26
317L 18.0-20.0 11.0-15.0 3.0-4.0 – – 29-33
904L 19.0-23.0 23.0-28.0 4.0-5.0 1.0-2.0 – 34-38
254SMO 19.5-20.5 17.5-18.5 6.0-6.5 0.5-1.0 0.18-0.22 42-45
Alloy 20 19.0-21.0 32.0-38.0 2.0-3.0 3.0-4.0 – 28-32
Duplex 2205 22.0-23.0 4.5-6.5 3.0-3.5 – 0.14-0.20 35-38

PREN = Pitting Resistance Equivalent Number (Cr% + 3.3×Mo% + 16×N%). Higher PREN indicates better acid corrosion resistance.

Mechanical Properties (at Room Temperature)
Grade Condition Tensile Strength (MPa) min Yield Strength (MPa) min Elongation (%) min Hardness (HB) max
316L Annealed 485 170 40 217
317L Annealed 515 205 40 217
904L Annealed 490 215 35 220
254SMO Annealed 650 300 35 250
Alloy 20 Annealed 550 240 35 220
Duplex 2205 Annealed 620 450 25 290

Tested in accordance with ASTM E8 / E8M.

Acid Resistance Performance (Guideline)
Grade Sulfuric Acid (H₂SO₄) Hydrochloric Acid (HCl) Nitric Acid (HNO₃) Phosphoric Acid (H₃PO₄) Acetic Acid
316L Good (dilute) Limited Excellent Good Excellent
317L Very Good Fair Excellent Very Good Excellent
904L Excellent (up to 50%) Good (dilute) Excellent Excellent Excellent
254SMO Excellent Good Excellent Excellent Excellent
Alloy 20 Excellent (all conc.) Good to Very Good Excellent Excellent Excellent
Duplex 2205 Very Good Fair Excellent Very Good Excellent

Always verify compatibility based on specific temperature and concentration.

Key Features for Acid Service

  • Superior Acid Corrosion Resistance – Formulated to withstand aggressive acidic media

  • High Molybdenum Content – Critical for reducing acid attack in reducing environments

  • Copper Addition (904L / Alloy 20) – Enhances resistance to sulfuric acid

  • High Nickel Content – Provides excellent resistance to chloride-induced stress corrosion cracking

  • Passivated Surface – Optimized oxide layer for maximum acid protection

  • Seamless Construction – No weld seams to initiate corrosion

  • Wide Temperature Range – Maintains integrity from cryogenic to elevated temperatures

Applications

  • Sulfuric Acid Plants – Acid transfer lines, heat exchangers, storage tank piping

  • Phosphoric Acid Production – Reactor feed lines, evaporator tubes

  • Nitric Acid Service – Concentrator columns, absorption tower piping

  • Hydrochloric Acid Handling – Dilute acid transfer and storage (Alloy 20 / 904L)

  • Pickling Lines – Steel mill acid recovery systems

  • Chemical Tankers – Cargo piping for bulk liquid acids

  • Mining & Metallurgy – Leaching circuits, acid drainage systems

  • Pharmaceutical Synthesis – Organic acid process lines

  • Food Processing – Citric and lactic acid handling

Contact Us

For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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