310S high-temperature boiler pipe, 25Cr-20Ni austenitic stainless steel, withstands long-term use at 800℃, tensile strength ≥200 MPa at 1000℃, oxidation weight gain ≤5 mg/cm².
| Element | Content (%) | Role in High-Temperature Applications |
|---|---|---|
| Cr | 24.0–26.0 | Forms Cr₂O₃+SiO₂ oxide film, prevents oxygen diffusion; oxidation rate ≤0.01 mm/100h |
| Ni | 19.0–22.0 | Stabilizes austenite, maintains toughness at 800℃; elongation ≥15% |
Physical: Density 7.98 g/cm³, Melting Point 1400–1450℃, Thermal Conductivity 16 W/(m·K)
High-Temperature Performance: 1000-hour aging at 800℃ without σ-phase formation
Outer Diameter: 16–159 mm
Wall Thickness: 2–10 mm
Length: 6 m / 9 m (±5 mm)
Surface Treatment: Annealed & pickled (2D), inner wall aluminized for oxidation resistance, optional high-temperature insulation
Stainless Steel Tubes Packed in Truck
Wooden Crate Packaging in Factory
Neo-Mac Machine with Stainless Steel Tubes
Factory Tube Packaging Process
Industrial Manufacturing Equipment
Stainless Steel Composition Analyzer
Specification: Φ51×3.5 mm
Performance: 850℃ service for 5 years, oxide layer thickness ≤0.1 mm
Case: Huaneng Yuhuan Power Plant Superheater Pipeline
Specification: Φ108×5 mm
Performance: 1000℃ short-term service, no deformation
Case: Baowu Steel Annealing Furnace Heating Pipe
Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.
