904L Stainless Steel Pipe
Thickness: 0.15~12.0mm.
Square tube: 5*5~150*150 mm
Thickness: 0.4~6.0 mm.
Rectangular tube: 5*10~100*200 mm
Thickness: 0.4~6.0 mm.
Product Overview
ASTM A312 904L stainless steel pipes are high-alloy austenitic pipes designed for severe corrosive environments, particularly in sulfuric and phosphoric acid applications where 316L is insufficient. With copper addition and a high alloy content, 904L is widely used in chemical processing, marine piping, and acid-handling systems.
Key Features
- High Resistance to Pitting and Crevice Corrosion
Elevated molybdenum and chromium content improves performance in chloride-containing environments and reduces the risk of localized corrosion
- Low Carbon Content for Welded Structures
Low carbon composition minimizes the risk of intergranular corrosion after welding.
- Good Formability and Weldability
Suitable for cutting, bending, and welding, supporting efficient fabrication and installation.
Product Information (Standard Parameters)
| Category | Specifications |
|---|---|
| Product Type | Stainless Steel Pipe |
| Material Grade | 904L (UNS N08904) |
| Structure | Austenitic Stainless Steel |
| Standards | ASTM A312 / A213 / A269 (depending on application) |
| Manufacturing Type | Seamless / Welded |
| Application Focus | High-corrosion environments |
Chemical Composition
| Element | Content (%) |
|---|---|
| C | ≤ 0.02 |
| Si | ≤ 1.00 |
| Mn | ≤ 2.00 |
| P | ≤ 0.045 |
| S | ≤ 0.035 |
| Cr | 19.00 – 23.00 |
| Ni | 23.00 – 28.00 |
| Mo | 4.0 – 5.0 |
| Cu | 1.0 – 2.0 |
Customization Options
- Custom lengths and dimensions
- Surface finishes: pickled, polished
- OEM marking & packaging
- Grade substitution support (e.g. 316L → 904L upgrade)
Quality & Certifications
- ISO 9001:2015 certified
- EN 10204 3.1 Material Test Certificates available
- Third-party inspection (SGS, BV, TÜV, etc.)
- Full traceability of raw materials
Packaging & Delivery
- Standard: protective wrapping + wooden pallets
- MOQ: Flexible
- Shipping: FOB / DDP options
- Lead time based on specifications and quantity
- Express shipping available for samples
FAQ
Q1: What makes 904L different from 316L?
A: 904L contains higher nickel, molybdenum, and copper, providing significantly better resistance to strong acids and chlorides.
Q2: Is 904L suitable for sulfuric acid applications?
A: Yes, it is specifically designed for sulfuric and phosphoric acid environments.
Q3: Can 904L replace standard stainless steels?
A: Yes, it is often used as an upgrade material when 316L cannot meet corrosion requirements.
Q4: Is 904L easy to weld?
A: Yes, its low carbon content ensures good weldability with minimal risk of carbide precipitation.
Q5: What industries commonly use 904L pipes?
A: Chemical processing, marine, environmental, and acid-handling industries.
Q6: Do you provide material certification?
A: Yes, EN 10204 3.1 certificates and third-party inspections are available.
Contact us
Mob: +86-13772502581
Email: judesteel@juqing.hk
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