904 Stainless Steel Pipe 4-200mm OD with 0.6-6.0mm Wall Thickness for Corrosive Applications
904 stainless steel pipe is a high-alloy austenitic stainless steel offering exceptional corrosion resistance and superior processing performance. Its advanced chemical composition provides outstanding mechanical properties for demanding industrial applications.
The optimized alloy composition includes:
- Chromium (Cr): 18.0%-20.0%
- Nickel (Ni): 23.0%-25.0%
- Molybdenum (Mo): 3.0%-4.5%
- Copper (Cu): 1.0%-2.0%
With carbon content maintained below 0.03%, the pipe minimizes carbide precipitation during heat treatment and welding, effectively preventing intergranular corrosion.
| Element | Content (%) |
|---|---|
| C (Carbon) | ≤ 0.02 |
| Si (Silicon) | ≤ 1.0 |
| Mn (Manganese) | ≤ 2.0 |
| Cr (Chromium) | 19.0-23.0 |
| Ni (Nickel) | 23.0-28.0 |
| Mo (Molybdenum) | 4.0-5.0 |
| S (Sulfur) | ≤ 0.035 |
| P (Phosphorus) | ≤ 0.045 |
| Property | Value |
|---|---|
| Tensile Strength (MPa) | ≥490 |
| Yield Strength (MPa) | ≥220 |
| Elongation (%) | ≥35 |
| Hardness | ≤ 90HRB |
904 stainless steel pipe delivers superior performance in various corrosive environments, particularly excelling in non-oxidizing acids including sulfuric acid, acetic acid, formic acid, and phosphoric acid. The material demonstrates excellent resistance to pitting, crevice corrosion, and stress corrosion cracking.
Ideal for applications involving sulfuric acid up to 70°C, acetic acid at any temperature and concentration under normal pressure, and mixed acids containing formic and acetic acid.
| Parameter | Specification |
|---|---|
| Product Name | 904/904L Stainless Steel Pipe |
| Type | Steel Pipe |
| Outer Diameter | Round Tube: 4mm-200mm Square Tube: 10×10mm-100×100mm Rectangular Tube: 10×20mm-50×100mm |
| Wall Thickness | 0.6mm-6.0mm |
| Length | 1-6 meters (custom lengths available) |
| Standards | ASTM, AISI, JIS, GB, DIN, EN |
| Surface Finishes | Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4, BA |
| Applications | Food processing, Textile operations, Breweries, Water treatment plants, Oil and gas processing, Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts |
| Certifications | ISO, SGS, BV |
| Production Technology | Hot Rolling, Cold Rolling |
| Edge Processing | Edging, Trimming |
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